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Allis-Chalmers HD-5, Manual

The Allis-Chalmers HD-5 is a versatile construction vehicle from the past. This user manual provides step-by-step instructions on operating and maintaining this machine. Download the free manual at manualshive.com to harness the full potential of your HD-5 and ensure its longevity in any heavy-duty job.

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Summary of Contents for HD-5

Page 1: ...assemblies of the tractor and instructions for the proper ad ustment and repair or rebuilding of these assemblies Section XX describes the Special Equipment available for the tractor and outlines the service on these parts General Maintenance Instructions are given in Section XXI and Fits and Tolerances in Section XXI Trouble Shooting Information given in Section XXIII will aid in deter mining the...

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Page 3: ...nor Controls 71 Electrical System 78 Instruments 88 Engine 90 Engine Clutch and Clutch Broke 130 Transmission and Bevel Gear 136 Steering Clutches 150 Steering Brakes 155 Final Drives 158 Truck Frames 168 Draw Bar 179 Tracks 180 Main Frame and Equalizer Spring 183 Fenders and Seat 186 Special Equipment 187 General Maintenance Instructions 193 Fits and Tolerances 197 Trouble Shooting 203 3 ...

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Page 5: ...aft assembly to the transmission The final drive gears and track drive sprockets are driven by two multiple disc steering clutches one on each end of the steering clutch cross shaft At full governed engine speed under load of 1800 R P M the transmission provides 5 forward speeds ranging from 1 46 M P H to 5 47 M P H and a reverse speed of 1 99 M P H Mechanical self energizing brakes insure easy an...

Page 6: ...wer at rated speed of 2 44 M P H Belt Horsepower Fuel Used Fuel injection System Lubricotion 11 250 Ib 10 ft 4 in 6 ft 6l in 6 ft 1Y in 5 ft in 60 in 6 It 10 in 5 ft 4 4 in 131n 1670 h sq in 6 73 Ib per sq in 1110 in 13 15 16 in 21 in 1 46 M P H 2 44 M P H 3 30 M P H 3 96 M P H 5 47 M P H 1 99 M P H General Motors Diesel 2 Cycle 2 4 x 5 in 142 cu in 1800 R P M 179 1 ft lb 1270 R P M 43 S 51 9 No 1...

Page 7: ...blies with engine oil A list of the various brands of engine oils which have 7 been tested and found satisfactory for use in these assemblies is shipped with each tractor and is also available from Allis Chalmers dealers Use only an oil shown on this list as the use of untested oils may result in deterioration of the Neoprene boots and rings in these assemblies Use oils with the following viscosit...

Page 8: ...matter found in the fuel Proper burning characteristics are dependent upon ignition quality and volatility The fuel should have a cetone number of at least 40 and should be free from alkali odds gum and water The sulphur content should not exceed 0 5 for summer operation and 0 3 for winter operation Fuel oils having these specifications are available from most oil companies The use of fuels having...

Page 9: ...ner the sediment and foreign matter will be disposed of and no fuel will be wasted Whenever drums are used for storage they should be covered or placed under shelter to avoid the fuel becoming contaminated by water which will enter through the flller plugs when it rains even though the plugs are tight The fuel tank of the tractor should be fllled at the end of the day s run rather than in the morn...

Page 10: ...10 The tractor serial number is stamped in the rear face of the steering clutch housing near the upper right corner ...

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Page 13: ...ll porous metal filter in the iniector body The amount of fuel required by the engine is injected into the cylinders by the injectors Surplus fuel not required for combustion leaves each iniector through a second porous melal filter enters the relurn fuel manifold in the cylinder head and relurns to the fuel tank A pressure of 25 to 45 pounds is main lained within the system by a restricted fittin...

Page 14: ...connect one of the injector fuel lines then start the engine If air is entering the fuel system foam or bubbles will be observed in the fuel that emerges from the loosened connection Correct this condi lion by tightening any loose fuel lines and filter connections between the fuel pump and the fuel tonk Test for smooth operation and full flow of fuel If the fuel lines or filters are dogged remove ...

Page 15: ...llons The drain elbow on the bottom of the fuel tank provides a means of flushing the tank and also acts as a sediment sump Open the drain cock on this elbow before the engine is started at the beginning of the day s operation in warm weather or shortly after the end of the day s operation in freezing weather Close the cock when clean fuel runs out Drain the tank when an accumulation of rust and s...

Page 16: ...tall a new one after every 300 to 500 hours of operation more often if conditions warrant or when the filter becomes clogged A clogged filter is usually indicated by irregular engine performance To change the element remove the filter cover drain the filter lilt out the spring and element and wash the inside of the filter shell Place a new element and the spring in position and re instali the cove...

Page 17: ...used inside the body at the inner end The sealing edge of one seal faces the pump cover and retains the fuel within the pump the other faces the opposite direction and prevents engine lubricating oil from entering the pump The seals are located approximately 1 16 apart A drain hole located between the two seals vents to the atmosphere A neoprene g asket fitted into the machined recess in the cover...

Page 18: ...ff the attaching studs and remove Ihe square lubular fuel pump cou pling 4 Remove the flat head capscrew attaching Ihe drive adapter 10 the engine block if cap screw is used for altaching NOTE A flat head capscrew is used to hold the adapter assembly in place on the early model engines and a dowel is used on the later model en gines 5 Tap the drive adapter flange lightly to loosen and withdraw it ...

Page 19: ... cover are worn or scored causing excessive looseness of the rolors in Ihe cover and body the pump 17 should be replaced 3 Install the inner rotor on the pump shaft with the locking boll in place If excessive wear between these parts is found new parts must be installed 4 Check the fit of Ihe pump shaft in the pump body bushings If the shaft and bushings show excessive wear they must be replaced T...

Page 20: ...he inlet side of the pump right side when viewed from pump cover end H LJLJJING 9 Install the pump body plug and gasket in the side opposite the relief valve 10 Install the fuel pump on the engine by direct reversal of the removal procedure G Disassembly of Barnes Fuel Pump The relief valve assembly may be removed from the pump stator without disassembly of the other parts of the pump by removing ...

Page 21: ... inside the stator and housing contacted by the gear faces If the 19 surfaces show excessive wear or are scored the entire pump must be replaced 6 When the pump is overhauled it is recom mended that the relief valve and spring be replaced Replacement of these ports may prevent difficulties in pump operation in the future I Assembly of Barnes Fuel Pump 1 Install the pump shaft inner seal in the sta...

Page 22: ... pinion If the pinion WOODRUFF KEY SHAFT COUPLING i BUSHING is worn excessively or damaged it is advis able to also inspect the drive gear on the balancer shaft If the drive gear on the bal ancer shaft shows excessive wear or the teeth are damaged it will be necessary to replace both the drive pinion and the balancer shaft 2 Check the fit of the adopter shaft in the adopter shaft bushings If the s...

Page 23: ...nto the combustion chamber of the cylinder The fuel is injected under high pressure at the end of each compression stroke and mixes with the charge of air that has been delivered to the cylinder by the blower Since INJECTOR ASSEMBLY COPPER TUBE SEAL RING BALL STUD AND FUEL 21 there is an injector for each cylinder a complete and independent injection system for each cyl inder is thus provided The ...

Page 24: ...e helix closes the upper port The rotation of the plunger by changing the position of TER CAP GUIDE STOP PIN 1It II SEAL I NUT r k PLUNG ER t t GEAR RETAINER m NG SPACER L0 I JI 4 CHECI UPPER Pf DT iii VALVE J LJm FL CTOR VALVE SEAT VALVE SPRAY TIP SPRING I VALVE ER PORT 1 LVE STqP v SPRAY TIP l _________ Fig II fuel Injector Detoi s ________ plunger operates up and down in this bushing the bore o...

Page 25: ... constant circulation of fuel through the injectors renews the fuel supply in the chamber helps to maintain even operating temperatures of the injectors and effectively re moves all traces of air which might otherwise ac cumulate in the system and interfere with the ac curate metering of the fuel The fuel injector outlet opening which returns the excess fuel supplied by the fuel pump is adjacent t...

Page 26: ...njector has been disassembled place the loose ports in a pan of dean fuel oil as protection against dirt and corrosion Leave the 24 parts in the clean fuel oil unlil needed for reassem bly When more than one injector is dismantled it is necessary to keep the parts of each injector sep arate The plungers must always be filled with the some bushings from which they were removed II is advisable to ke...

Page 27: ...bushing Remove the bushing from the injector body 7 Remove the injector body from the fixture and jar the retainer and gear from the body Slide the control rack out of the body 8 Remove the two filter caps filters and springs from the body F Cleaning Inspection and Recondition ing of Injector Parts Wash the hands thoroughly and clean all the in jector parts in clean fuel oil or carbon tetrachlorid...

Page 28: ...irror finish and a high popping pressure of the injector finish lop the ports on the lapping block after it has been cleaned with a bristle brush rinsed in 26 fuel oil or kerosene and dried with com pressed air As frequent refacing of lapping blocks will produce top quality work it is advisable ta have two graaved blocks on hand and main tain their surfaces flat and free from worn or low spots To ...

Page 29: ...en washed as thoroughly as possible and dried with compressed air 27 partides of dirt may remain in them that would be washed into the injector and cause damage if the filter removed from the outlet side was installed in the inlet side If they have been mixed the outlet filter can usually be identified by its being darker in color on the inner bottom side while the inlet filter will be discolored ...

Page 30: ... and drop the spray tip valve in the spring with the valve end up c Place the check valve assembly on the end of the plunger bushing and the spray tip assembly an top of the valve assembly Align all these parts with the center of the bushing d lubricate the threads in the injector nut and insert a spray tip driver rod or a length of copper tube through the nut to hold the valves and tip in positio...

Page 31: ...houled it should be tested before il is installed in an engine or pul aside for fulure use Also when in doubt about an injector functioning properly a test will usually indicate the difficulties quickly Two lesls are recommended on Ihe injector 1 A popping lest 2 A pressure test The popping tesl con sists of operating Ihe plunger to see that all parts are functioning properly and to open the check...

Page 32: ... the valve between the pump and pressure gouge and noting the pressure drop on the gauge A drop not to exceed 200 pounds in 50 seconds on a new injector 200 pounds drop in 35 seconds on a used injector is permissible 30 If the injector functions satisfactorily throughout the above test it has been properly reconditioned and may be used If it does not function properly recheck the injector i Inject...

Page 33: ...ush rod and turn the rod counter clockwise to raise the follower or clockwise to lower the follower until the proper timing is obtained 31 flRST TYP GAUGE S CON TYPE GAUGe __ Fig 23 ln ector Timing Gauges __ J 6 Tighten the lock nut and recheck the timing to be sure it was not changed by tightening the lock nut Replace the rocker arm cover and hood NOTE The timing instructions above apply to the u...

Page 34: ...overnor con trol shift link NOTE Use the procedure explained above when a rear injector is replaced When a front injector is replaced adjust the rack control lever by holding the rear coniro rack all the way in and adjust the fronf lever in the same manner 8 INJECTOR COPPER TUBES A Description As will be seen by referring to figure No 10 the bore in the cylinder head for each injector is direct ly...

Page 35: ...tube firm Iy into position in the cylinder head When the tube is properly located the 33 L__ Fig 27 Installing Injector Copper Tube __ flange at the upper end will seat on the pack ing ring and into the counterbore in the cyl inder head 4 After the tube is driven into place the lower end of the tube must be flared out to lock it in place this is done as follows a Support the edge of the cylinder h...

Page 36: ...t the injector tube bevel seat reamer 34 COPP R TUBE R AM R fig 30 Reaming Sevel Seat In Copper Tube into the tube and place the reamer feed clamp plate and block on the cylinder head as illustrated in Figure No 30 Put the feed screw of the tool directly over the center of the reamer b Bolt the plate and block securely to the head and turn the feed screw down finger tight only c Using a cutting co...

Page 37: ...he short steel injector fuel lines The upper return passage in the cylinder head returns the excess fuel oil from the injectors through the tubing to the fuel tank Pressure is maintained 35 in the injectors by a restricted fitting at the cyl inder head return manifold opening B Service Since the fuel manifolds are drilled in the cylinder head the only service necessary is to keep the drilled passa...

Page 38: ...ir which permits highly efficient combustion This circulation of the air through the cylinders also helps cool the internal engine parts particularly the exhaust valves The fuel injected into the cylinders is ignited by the heot of the air compressed within the combustion chambers on the upstroke of the pistons In cold weather the drag caused by cold oil between the pistons and cylinder walls and ...

Page 39: ...g nut to remove the cap from the shell 2 Lift the shell from the pre cleaner body Clean the dirt out of the shell and wipe the inside of the shell with a dry cloth Be sure the fins in the cleaner body are not bent damaged or clogged 3 Wipe the dust off the cap gasket and re assemble the pre deaner Install a neW gasket if the old one is not in good condition Instali the wing nut finger tight DO NOT...

Page 40: ...ay when servicing the Donaldson Cleaner Use 38 SAE 30 engine oil when the temperature is above 32 F SAE 10 when temperature is 32 F or below NOTE SOME DIESEL LUBRICATING OIL MAY FOAM WHEN USED IN THE AIR CLEANER DO NOT USE AN OIL THAT FOAMS AS IT REDUCES THE AIR CLEANER EFFICIENCY AND IN SOME CASES ALLOWS THE OIL TO BE PULLED OVER INTO THE ENGINE CAUSING SERIOUS DAMAGE C To Service Cleaner 1 Remov...

Page 41: ...e engine shut off rod When the engine shut off rod is pushed in the valve is opened and air can pass through the intake tube to the blower When the rod is pulled out the valve closes against the seating surfaces in the intake tube and the air supply to the engine is shut off This valve also acts as on 39 emergency engine shut off device If for some reason fuel collects in the air box speeding up o...

Page 42: ... intake tube to the air cleaner pipe Tighten the hose clamps securely to insure an air tight joint Connect the engine shut off control rod to the air shut off valve shaft lever Adjust the controls as explained in Engine Shut Off Control Adjustment Section VI 5 BLOWER A Description The blower supplies the fresh air needed for com bustion and sweeping the cylinders clear of exhaust gases Its operati...

Page 43: ...between the rotor lobes will not be maintained Normal gear wear causes an increase of rotor to rotor clearance between the leading flanks of the upper rotor lobes and the trailing flanks of the lower rotor lobes Clearance between the opposite sides of the rotor lobes is decteased correspond 41 ingly While rotor lobe clearance due to gear wear may be corrected by adiustment the gear back lash canno...

Page 44: ...s in the rotors and housing and raise up burrs around such abrasions If burrs caUSe interference be tween rotors and housing the parts should be dressed down to eliminate interference or rotors replaced if too badly scored 2 Leaky oil seals are usually indicated by the presence of excessive oil on the blower 42 rotors or inside the housing 3 If loose rotor shafts or worn bearings are causing blowe...

Page 45: ...kage past the seals leakage would be evi denced by streaks of grease radiating from the inner diameter of the seal If no leakage is present and the seal lips are smooth and pliable removal is unnecessary Wash the bearings and end plates with carbon tetrachloride dry with compressed air and apply a thin film of light oil If the bear ings roll freely and without shake in the races removal is not nec...

Page 46: ... surfaces are smoolh F Blower Assembly 44 All blower ports having been inspected assemble the blower by versing sequence of operation for disassembly as follows Refer to Figure No 7 showing blower details in relative position 1 Install Oil Seals in Blower End Plates The seals must be installed so the sealing edge of the leather is pointing toward the rotor bearings Start the seals squarely into pl...

Page 47: ...gs a Install the front rotor shaft bearings exact ly the same woy the rear bearings were installed b With flange at inner diameter of the bearing retainers pointing away from the bearings attach retainers to the end plate using three slotted head screws and lock washers in each retainer 7 Press Timing Gears Onto Rotor Shafts If blower once used is being reassembled mesh adiusting shims were no dou...

Page 48: ...al than one single thiek feeler The clearance between rotor lobes must be taken between two of the lobes at one end of the blower while revalving the rotors to the right and also between the same two lobes at the same end while revolving the rotors to the left This double check must be made between each pair of mating lobes at each end and at all points indicated in Fig ure No 9 A 003 mesh adjusti...

Page 49: ...ondense and settle in the bottom of the air box A small vent hole is drilled and tapped in the under side of the blower housing and another of the Same size in the right hand side of the cylinder block into the air box and a drain tube is inslalled in each hole 10 allow drainage It is imporiant that these drain tubes be kept open at all times A stream of air can be felt emerging from the end of Ih...

Page 50: ...sed by cold oil between the pistons and the cylinder walls and in the bear ings reduces the cranking speed of the engine A large part of the heat generated by the COm pression of the air is absorbed by the pistons and cylinder walls This loss of heat and the reduced cronking speed may result in the temperature of the air in tbe cylinders being too low to ignite the fuel A starting aid must then be...

Page 51: ...le thai carbon or sludge has accumulated on the electrodes causing a short circuit Occasionally holding the push button switch in and allowing the unit to buzz will burn away this accumula tion and the spark will occur at the electrodes However this should be done for a brief period only For further inspection the 49 burner unit must be removed from the blower Refer to Air Heater Removal With the ...

Page 52: ...gged fuel lines or frozen or clogged check valves see Figure No 15 The piston Ieathers on the plunger are molded of a special oil resistant composition and must be replaced by duplicate ports if they are broken or worn To replace these leathers unscrew the nut under the pump knob from the pump body and pull the plunger out of the body Remove the reo taining screw from the end of the plunger VALVE ...

Page 53: ... heater to blower housing gasket D Air Heater Installation The air heater assembly may be re installed on the blower housing by reversing the sequence of removal operations 1 Using a new gasket between body and hous ing carefully place the air heater body in position an blower housing with the open ing for battery lead wire pointing toward flywheel end of the engine 2 Attach body to the blower hou...

Page 54: ... of the fluid dispenser 52 2 Place a capsule of fluid small or large size depending upon air temperature and re quirements established by trial in the lower chamber or body of the dispenser In ex tremely low temperatures one large and one small capsule may be necessary 3 Pull the plunger to the top of the upper chamber and screw the chamber tightly into the dispenser body 4 Push the plunger to bot...

Page 55: ...f the primer sys tem is equipped with a General Motors Pump refer to U Air Heater Pump for repairing instrudions Instruclions for repairing the Kohler Pump are as follows Failure of the primer pump to function proper ly may be due to worn or damaged pocking rings a clogged dispenser filter screen clogged fluid lines or frozen or worn check valve balls The packing rings on the plunger are made of a...

Page 56: ... starting fluid dispenser If the gelatine capsules are not removed soon after punc turing the gelatine will melt and plug the strainer screen in the dispenser body To clean the dispenser body and the strainer screen remove the connector assembly from the dispenser body and wash in hot water Remove the plunger knob from the plunger assembly and the upper capsule chamber from the dispenser body the ...

Page 57: ...tom of the radiator and forces it through the oil cooler and into the lower water jacket in the cylinder block Two large cored passages between the cylinders permit the water to flow upward into the top jacket Eight cored openings in the top deck of the block connect with corresponding openings in the cylinder head where water circulates around the valves and fuel injectors From the cylinder head ...

Page 58: ... radiator then fill the cooling system through the radiator filler cap IMPORTANT The vent valve in the thermostat housing must be opened when fill ing the system to allow the air trapped in the en gine to escape Close the vent valve after the system is filled If the valve is left open it will prevent prop er engine warm up and regulation of the engine temperature by the thermostat Since the valve ...

Page 59: ...not use over 5 pounds pressure in this flushing operation as excessive pressure may cause the radiator tubes or tanks to rupture C Inspect for Leaks After Cleaning or Flushing After the cooling system has been cleaned or flushed as outlined in the above paragraphs a complete inspection should be made of the entire system to detect any leaks that might have been uncovered by performing the above op...

Page 60: ...radiator hoses at each end with gasket cement or sealing compound before connecting them 2 Close the cooling system drain cocks and fill the system Close the thermostat vent valve after filling Check the cooling system for water leaks 3 Install the engine hood and engine pre cleaner 6 WATER PUMP A Description A centrifugal type circulating water pump with cast iron body and bronze impeller is atta...

Page 61: ...cooler housing cover 7 Top the pump body lightly with a soft ham mer to loosen it from the oil cooler cover and withdraw the pump from the engine E Water Pump Disassembly With the water pump removed from the engine it can be disassembled in the following manner 1 Remove the bolts and lock washers holding the fan blade assembly and fan pulley to the pulley hub 2 Rest the pump in a bench vise and re...

Page 62: ...rsing sequence of disassembly operations as follows 1 Place the split shoulder ring in undercut of the pump shaft and slide the NEW water flinger over the large end of the shaft and into position to retain the split shoulder ring as shown in Figure No 4 2 Support the small diameter inner end of the shaft on the bed of the arbor press NOTE The ball bearings have a shield on one side only and are as...

Page 63: ... between Ihe impeller and the body 11 Affix gasket to the pump body and replace the body cover bolts and lock washers 12 Bolt the fan pulley and blade to the pulley hub H Assembly of Water Pump to Engine 1 Inspect the pump outlet packing and replace it if necessary 2 Place the water pump in position on the bosses of the oil cooler housing cover at the same time engaging the fan and generator drive...

Page 64: ...ng compound before installing 8 Close the cooling system drain cocks and fill the system Close the thermostat vent valve after filling Check the cooling system for water leaks 8 FAN AND BELTS A Description A cooling suction type four bladed fan 15 mounted together with the fan pulley on front of the water pump assembly and is bolted to the fan pulley hub The pulley hub is keyed and secured with a ...

Page 65: ...n and fan pulley to the pulley hub Lift the fan and pulley away from the pulley hub 63 F Installation of Fan 1 Place the fan pulley and fan in position on the pulley hub and secure with capscrews and lockwashers 2 Install the radi tor and shell by dired re versal of the removal procedure Coot the inside of the radiator hoses at each end with gasket cement or sealing compound before connecting them...

Page 66: ...the engine block A spring loaded relief valve in the oil pump body and a by pass valve between the oil pump and the oil cooler control the engine lubricating oil pressure The oil pump together with a suitable screen on the intake pipe is located at the front end of the 64 oil pan from which the oil supply is furnished The oil cooler consisting of a cooler element inside a sealed housing and surrou...

Page 67: ...eck of the cylinder head drains into the push rod wells in which are located the push rod seat bosses A cored opening at the front end of the chamber provides a drain from which oil flows into the gear train cavity over the blower gears and into the oil pan Oil from the push rod seats lubricates the com followers and then drains through the push rod covers The cams and cam rollers are lubri cated ...

Page 68: ... OIL PUMP DRlVlNG lEAll Fig 3 Lubricating Oil Pump Mounting NOTE The oil pump driving gear on engines prior to Serial Number 271 14721 is pressed on the drive shaft but is not keyed to the shaft When the oil pumps on these engines are disassembled for inspection or repair a neW driving gear and drive shaft having a Woodruff Key slot should be installed so the gear can be keyed to the shaft Use a N...

Page 69: ... between 002 and 0045 The end clearance be tween the face of the gears and the pump housing should be 001 to 004 4 Assemble the pump cover over the hollow dowels in the pump body and tighten in position with the four altaching bolts 5 Inslall the Woodruff Key in the drive shaft and press the driving gear into position on the shaft NOTE Press the driving gear on the drive shaft so that the face of ...

Page 70: ... cylinder block and remove the oil cooler element and housing 68 C Cleaning of Oil Cooler If the oil passages in the cooler element become clogged the oil flow will be restricted or stopped and the oil temperature will rise When this occurs the viscosity of the oil decreases with a resulting drop in oil pressure IT IS ABSOLUTELY NECES SARY THAT THE OIL COOLER UNIT BE KEPT CLEAN FOR PROPER OIL COOL...

Page 71: ...e system Close the thermostat vent valve after filling Check the cooling system for water leaks 7 Install the engine hood and engine air pre deaner 4 LUBRICATING OIL FILTER A Description The lubricating oil filter mounted on the left side of the engine has a replaceable element A drain cock in the bottom of the filter shell allows drain ing of the filter A new element must be installed each time t...

Page 72: ...t work freely thereby remaining open at the normal operating pressure or failing to open when the oil pressure increases above normaL Whenever the oil cooler is removed for inspection or cleaning the valve assembly should also be removed thorough Iy cleaned in fuel oil and in spected C Removal of Oil Cooler By Pass Valve 1 Remove the two bolts attaching the housing to the cylinder block and remove...

Page 73: ... spring loaded friction discs and two pressure plates enclosed in a cover assembly This friction aSSem bly acts as a brake and holds the throttle lever 71 in any desired position therefole an infinite range of engine speed is obtained between idle and wide open A throttle retracting rod and spring extending from the front of the throttle control rod to the blower housing is used to prevent the con...

Page 74: ...he position of the lever on the shaft so that the holes line up when the lever is in its extreme forward position Tighten the capscrew used to damp the lever to the shaft and install the connecting pin 2 GOVERNOR A Description CAPSCREW LOCKWASHER j SHUT OFF LEVER PACKING ____ RETAINERS BEARING lOi V cOVER GASm SHAFT fi BEARING WASHER CL P LEVER 0 JAM NUT r r_ BEAruNG SCREW WASHER LEVER SHAFT CA S ...

Page 75: ...and also opens the engine air shut off valve in Ihe blower intake tube As soon as Ihe engine starts the governor moves the injector racks OUT to the position required for idling The engine can then be brought up to any desired operating speed within the limitations of the spring by opening the 73 throttle and increasing the tension on the spring The engine speed control is entirely automatic from ...

Page 76: ...k from the differential lever and remove the link 5 Remove the capscrews attaching the governor breather tube to the governor housing and 74 the copscrew attaching the breather tube clip to the cylinder block Remove the breather tube 6 Remove the capscrews attaching the governor housing to the blower and to the cylinder head Remove the governor assembly from the blower by pulling it straight back ...

Page 77: ...ver and the operating shaft upper ball bearing 6 Remove the operating shaft lower needle bearing from the governor housing 75 G Disassembly of Governor Control Housing Cover 1 Remove the governor shut off lever from the shut off shaft then remove the snap ring from the shaft and remove the flat washer 2 Remove the shut off shaft assembly from the cover 3 Remove the shut off shaft packing and re mo...

Page 78: ...the governor has been dismantled for repairs or if a new governor is installed certain adjust ments should be checked and engine speed ad justments made if necessary Proceed as follows to check the governor adjustments 1 Refer to Injector Equalizing and be sure that the injectors are properly adjusted 2 Remove the cover assembly from the gov ernor 3 Pull the throttle control lever bock as for as p...

Page 79: ...e forward position as for as it will go when the engine shut afF control rod is pushed into running pasi tion If it does not adjust as is explained in Topic 1 77 b Remove the pipe plug in the top of the variable speed spring housing and check to be sure that the setscrew in the variable speed spring lever has not loosened per mitting the lever to turn on the shaft Tighten it firmly so that the scr...

Page 80: ...aced by the generator The output of the gen erator is controlled by the generator regulator to prevent over charging of the batteries 2 WARRANTY AND ADJUSTMENT POLICY Manufacturers of the batteries starter generator and generator regulator used on the tractor are responsible for this equipment during the warranty period Any claim for replacement or repair of any of these units must be presented to...

Page 81: ...am meter and fourteen 14 gauge wire is used to connect the headlights to the wiring harness A 20 ampere fuse introduced in the wire leading to the headlights and located under the lower left corner of the radiator prevents burning out the lights in event of a short circuit Inspect the wiring frequently to detect any loose connections or frayed insulation Tighten the con nections and wrap any fraye...

Page 82: ...nec tions or corroded connections In zero weather there is danger of batteries freezing if the specific gravity is below 1 175 Balleries with a specific gravity of 1 225 will freeze at 35 below zero F During freezing weather any addition of water to the cells should be made after the engine is started at the beginning of an operating period to make certain that the water and electrolyte solution w...

Page 83: ...direction from the gen erator to the batteries B General Maintenance and Inspection Inspection of the generator brushes commutatar 81 and leads should be made periodically 1 Brushes The original length of the main brushes is 13 16 the third brush 23 32 Replace the brushes if they are worn down to a length of 7 16 The brush spring tension must be sufficient to give good clean contoct of the brushes...

Page 84: ...harging circuit as shown in Figure No 5 Disconnect the lead from BATTERY terminal of voltage control and connect the negative ammeter lead to the disconnected lead With the ammeter con nected and the engine running there should be 6 to 8 amperes charge for a short time up to 30 minutes with charged batteries As the currenl used in slarting Ihe engine is replaced in the balleries the balleries will...

Page 85: ...eW on the face of the commutator and frame Do not loosen this screw more than one or two turns Consider able force may be required to move the third brush due to the construction of its mounting CAUTION Never under any circumstances set the generator output above 8 amperes at 14 1 to 14 5 volts If unable to obtain 6 to 8 amperes by shift ing the third brush remove the generator and voltage control...

Page 86: ... core and the armature with the armature held down against the lower armature stop Bend the lower armature stop to adjust c ARMATURE TRAVEL 045 Release the armature and gauge the distance between the armature and the lower armature stop Adjust by bending the upper armature stop d POINT OPENING 015 With the arma ture held down against the lower arma ture stop measure the contact point opening Adjus...

Page 87: ...he drive housing is connected to the starter rod and pedal Operation of the shift lever first mOVeS the starter drive pinion into mesh with the flywheel comple tion of the shift lever movement closes the starter switch so that the current can flow from the bat teries to the starter B Starter Service Field service on the starter will be limited to clean ing of the starter cleaning and adjustment of...

Page 88: ...b Separate the drive housing from the field 86 frame after removing the capscrews that hold them together Mark both housings before they are separated to establish relationship of one with the other c Remove the cotter pin from the pinIOn stop then remove the pinion stop pinion spring pinion guide shift sleeve and the spacer washers from the armature shaft d Clean all the parts thoroughly and insp...

Page 89: ...d along the splines of the shaft In reassembling the ports the pinion lock lugs should be in the slots in the pinion hub with the lugs toward the pinion or it will not be in the proper position to lack on the shaft Lubricate the three 3 starter bear 87 ings with light engine ail D Starter Removal and Installation 1 Remove the left front fender Disconnect the starting motor operating rod from the s...

Page 90: ...engine oil pressure gouge engine temperature gauge and the am meter and are mounted on the instrument panel of the cowl for this purpose in the instrument panel When a tractor is purchased as a standard model without the fuel pressure gauge the hole in the instrument panel is closed with a cover The fuel pressure gauge that can be obtained as special equipment is mounted in a hole provided 88 The ...

Page 91: ...arly zero through the M action of the generator regulator except for a short time after the starter has been used 5 FUEL PRESSURE GAUGE SPECIAL EQUIPMENT The fuel pressure gauge registers the fuel oil pres sure in the fuel system The fuel gauge is mounted in the instrument panel and the fuel gauge hose is connected to a fitting located in the rear of the head of the second stage fuel filter locate...

Page 92: ...ngine is in the method used to introduce and ignite the fuel __ Fig I Air Flow Through Engine ___ 90 Gasoline engines draw a mixture of fuel and air from the carburetor into the combustion chamber where it is ignited by an electric spark In Diesel Engines air alone is compressed in the cylinder then a charge of fuel is sprayed into the cylinder after the air has been compressed and ignition of the...

Page 93: ...towards the exhaust valves produces a scavenging effect leaving the cylinders full of clean fresh air 91 FUEL Fig 4 Charge Of Fuel Being In ected__ J Into The Combustion Chamber when the piston again covers the inlet ports As the piston continues on llie upward stroke the exhaust valves close and the charge of fresh air is subjected to the final compression as shown in Figure No 3 This engine is d...

Page 94: ...curely held to the upper part of the cylinder block by heat treated alloy steel bolts EXHAUST VALVE ROO U ARMS ___ fig 6 Cylinder Head Assembly ___ located in the head are two exhaust valves two valve seats two valve guides a fuel injedor and three rocker arms for each cylinder One rocker arm operates the injector plunger the other two operate the exhaust valves The valve guides are pressed into t...

Page 95: ...block and the other at the bottom of the radiator Open the thermostat air vent valve when draining system 3 Clean the dirt from the upper port of the engine then disconnect the fuel feed line and return line from the cylinder head and re 93 mOve the rocker arm cOVer 4 Remove the nuts from the exhaust muffler attaching studs and remove the muffler from the head NOTE While this is not essential for ...

Page 96: ...ock and from the bottom of the head With both surfaces clean install a new cylinder head compression gas ket to the top of the block with the side of the gasket marked Top up Install two head guide studs 5 8 x 6W with one end of the guide studs threaded for distance of 1 with 5 8 x llNe thread in diagonal holes on each end of the cylinder block The guide studs will assist in lining up the head to ...

Page 97: ... steel carefully heat treated to develop the special prop erties required for valve service The volve stems are ground to size and hardened at the ends The hardened valve seats installed in the cylinder head are accurately ground to very close limits and their freedom from warpage under ordinary working conditions reduces valve grinding to a minimum The valve guides made of fine grained cast iron ...

Page 98: ...COVER L Fig 12 tocation Of Push Rod ___ l Cover Retainer And Seal 1 Adjustment of valve lash 2 Valve spring replacement 3 Upper push rod assembly replacement rocker arm push rod push rod seat follower spring etc 4 Lower push rod replacement The cylinder head must be removed to perform the follawing valve operations l Replace a va Ive 2 Replace a valve guide 3 Grind or re seat valves 4 Replace a ca...

Page 99: ...w the rocker arms from 97 the push rods 6 Inspect the bushings inside the rocker arms for wear Normal clearance between the shaft and the bushings is 001 to 0025 and must not exceed 004 Replace the bushings if they are excessively worn After the bush ings are installed ream them to allow 001 to 0025 clearance with the shaft Clean out the oil holes in the rocker arms hollow bracket bolts and rocker...

Page 100: ...rods and cam followers in the block by flrst bolting the two cam follower retainers in place on the inside of the block drop a cam follower assembly 98 saturated with oil into each bore guiding the roller into its notch in the retainer and against its cam on the camshaft 7 Install the push rod covers as follows a Place a washer into each cavity above the cam follower assembly b Slip a seal on each...

Page 101: ...springs as previously in structed and remove the valves from the cyl inder head Place the valves in a rack so that they can be reinstalled to the same valve seat from which they were removed 3 Clean the carbon from the valves and seats and ream the carbon from the valve guides with a valve guide cleaner Refer to Figure No 13 4 Replace the valves if they are bent or worn The valve stem diameter is ...

Page 102: ... collet and lock the screw on the collet c Put the thrust bearing over the collet and on top of the body Start the screw head on the threads of the collet and turn the head until the valve insert is pulled from its seat Refer to Figure No 16 10 Particular care must be exercised when re 100 SCREW HEAD c t THRUST Dt I V 1 r placing valve seat inserts The inserts are installed in the head with a driv...

Page 103: ...valve inserts are installed or old inserts refaced the work must be done with a grinding wheel The ordinary method of grinding valve seats is ineffective for the operation because of the very hard insert material 3 The usual equipment furnished with a valve grinding set consists of a grinder dial gouge pilot and three grinding wheels 30 45 and 60 The 45 grinding wheel is used for refacing the valv...

Page 104: ...er each valve stem Compress the springs and install split locks in position on the valve stems 8 Install the other components in the cylinder head as follows a Insert the fuel injectors in the head the dowel on Ihe bottom of the injector body 102 LAPPING TOOL SUCTION CUI DRIVE HEAD musl enler Ihe locating hole in Ihe cylinder head Place the injector clamps on the injector clamp sluds and cenler Ih...

Page 105: ...n will strike the valve and dam age to the valve push rod or piston will result 9 Install the oylinder head on the cylinder block refer to CYliNDER HEAD INSTAllATION in this section 4 CYLINDER BLOCK AND LINERS A Description The cylinder block and crankcase which is the main structural part of the engine is a box like one piece casting made of alloy cast iron Rugged transverse members cost integral...

Page 106: ...nd if the openings are restricted as much as 30 the ports should be cleaned as outlined in Air Intake Sys tem Section III If the engine has been disassem bled and the cylinder liners removed the parts may be cleaned by inserting the pointed end of a piece of wood in each port and twisting Avoid using a tool which will cause burrs around the ports on the inside of the liner An alternate method of c...

Page 107: ...f tl GlNfI MfASUilf INSID OIAMCltll O liNER l 10 PLACES_ A S C Ot E ON WY XZ A MAXIMUM OLIT Of ROL t O 0015 WHfN IN PLACE ___ Fig 26 Measuring Uner ____ J 3 If the height of a liner flange does not fall within the 002 to 006 range or if the difference between the two liners exceeds 002 cylinder liner shims made of shim steel 003 thick must be installed accord ingly Before installing a cylinder lin...

Page 108: ...e col lec in it The tubes must be kept open at all times Remove the tubes and elbows and dean them if clogging occurs Air emerging from the tubes while the engine is operating will indicate that the tubes are open 5 CRANKSHAFT FLYWHEEL AND MAIN BEARINGS A Description TAIN lNG BO T HOL S fig 27 Crankshaft And flywheel 1 Crankshaft The rigid crankshaft is a high alloy steel drop forging carefully he...

Page 109: ... crankshaft and doweled in two places One of the capscrew holes is off set and the flywheel can be attached to the crankshaft flange in only one position A starter ring gear made from heat treated steel is shrunk on the rim of the flywheel A pilot bearing for the front end of the engine clutch shaft is pressed into a counterbore in the center of the flywheel The engine clutch shaft front ball bear...

Page 110: ...with compressed air Coot the threads of the plugs lightly with white lead when installing them and tighten them securely C Main Bearing Inspection 1 Any bearings that are scored chipped pit ted or worn beyond the prescribed limits given below must be replaced Inspect the bocks of the shells for bright spots Bright 108 BEARING SHEll spots on the bocks of the shells indicate they have shifted in the...

Page 111: ...s the new seals into place to prevent damaging the seal The lip side of each seal should be toward the inner side of the housing and the cover The lips must face each other when the housing and the cover are installed on the en gine Effective on Engine Serial Number 2A 2129 the crankshaft incorporates an oil slinger to improve the oil sealing at the rear end of the crankshaft This oil slinger can ...

Page 112: ...ylinder block Th ese ends of the teeth engage the pinion of the starter Drive the ring gear down tight against the shoulder on the flywheel Allow ring gear to cool slowly Do not cool it by using water 3 Engine Clutch Shaft Pilot Bearing Re place the bearing in the flywheel if the balls or the races are worn corroded or rough or if bearing does not roll freely and smooth ly Remove the bearing with ...

Page 113: ... shell from part ing line to parting line These grooves are always in line with the oil holes in the crankshaft thereby providing a constant supply of oil through the hollow connecting rod to the piston pin bearings and the spray nozzle at the top of the connecting rod A helically grooved steel backed bronze bushing is pressed into each side of the upper end of the connecting rod for the piston pi...

Page 114: ... clean the carbon from the grooves E Piston Clnd Piston Ring Inspection As gummy deposits are not always easily removed from the piston walls and ring grooves with fuel oil these ports may be cleaned by using a solvent and then blowing off with dry compressed air After cleaning the piston skirt the piston rings and the ring grooves should be thoroughly in 112 speeled The coating on the skirt of th...

Page 115: ...liners should be taken at room temperature 70 F PISTONS MUST BE FITTED TO THEIR RESPEC TIVE LINERS TO PROVIDE A RUNNING CLEAR ANCE OF NOT LESS THAN 004 Insufficient clearance will result in premature failure of these parts Measure the liners as described in CYLINDER LINER CLEANING AND INSP CTION in this sec tion The bore of the Hners must be round within 001 and the pistons must also be round with...

Page 116: ...ntrol ring to groove dearance top of ring to top of groove is 0015 to 0055 After the rings have been fitted for proper gop install them on the piston The oil control rings are the 3 piece type and must be installed in the two lower grooves in the piston skirt in the position shown in Figure No 32 The expanders must be installed flfst then the rings with the scraper edges down and the chamfered edg...

Page 117: ...he upper end of the conneding rod into the piston lubricate the piston pin with light oil and slide the pin through the piston and rod The pin will slip easily into place without forcing if it has been corredly fitled 3 Install the second retainer and the lock ring at the opposite end of the pin IMPORTANT Install the piston pin retainer lock rings so that the offset in the tips of the rings will b...

Page 118: ...this is com pleted the operation may be performed as fol lows C Remove Camshaft and Balancer Shaft Remove the engine oil pan and the oil pump assembly refer fa OIL PUMP REMOVAL in Section V 2 Remove the cylinder head refer to CYl INDER HEAD REMOVAL in this section 3 Remove the lower push rods and cam fol lower assemblies refer to CAM FOLLOWER AND LOWER PUSH ROD REMOVAL in this section 4 Remove the...

Page 119: ...d scored Or broken teeth If the gear is badly damaged the balancer shaft must be replaced E Remove Camshaft and Balancer Shaft Gears and Thrust Washers 1 Remove the camshaft lock nut 117 2 Place the camshaft in an arbor press and press the camshaft out of the gear The thrust plate is now loose on the camshaft Removal of the above parts from the balancer shaft may be made in the same manner F Assem...

Page 120: ...be scraped lightly until smooth 4 Before the front camshaft bearing is pushed into place rotate the camshaft gear until its timing mark 0 is indexed correctly with the crankshaft gear timing mark refer to Figure No 40 5 Slide the gear ond camshaft into place with the 0 timing mark at the root of the cam shaft gear tooth in line wilh Ihe 0 liming mark on Ihe toolh of the crankshaft gear at the same...

Page 121: ...ower front bearings is lubricated by oil draining from the cylinder head B Service Disassembly of the gear train is described in the discussion of the various parts to which assemblies the gears belong i e camshaft and balancer shaft gears are dealt with under CAMSHAFT AND BALANCER SHAFT Topic 7 in this section The helical gear train will give trouble free opera tion for long periods when properly...

Page 122: ...er 1 See that the bore in the cover for the seal is 120 not damaged 2 Position the seal assembly so that the sealing edge of the leather points toward the inside of the cover and start the seal into the cover by hand 3 Support the gear cover on wood blocks at least 1 high inner face down and drive the seal into the cover flush with inner face with the same tool that was used for removal A small am...

Page 123: ... time will result in further shut down within a short time 3 When new main and connecting rod bearings are required the camshaft bearings and balancer shaft bearings must also be in spected 01 this time and if excessively worn they musl be replaced The oil pressure may remain low and the new bearings or pistons and rings may not receive sufficient lubrica tion if the camshaft and the balancer shaf...

Page 124: ...rankcase guard then drain the oil from the crankcase and remove the oil pan 4 Remove the oil pump assembly from the en gine block refer to Oil PUMP REMOVAL in Section V 5 Remove the main bearings caps and install the new inserts one at a time Do not fully tighten the caps until all the bearings have been installed The lower shell can be re moved from the bearing cap after the cap is removed Remove...

Page 125: ...ON A one ton hoist and about 10 foot of 1 2 cable or a section of 3 B chain or equivalent equip ment will be needed to lift the engine from the tractor An engine stand or suitable blocks to support the engine after it is removed should also be provided along with an ample supply of cleaning solvent wiping rags and at least 6 to 8 boxes or pans to hold the bolts and small parts removed from the eng...

Page 126: ...ation of the engine is practically a re versal of the removal procedure except that cer tain inspections and adiustments must be made before installing the engine 1 Inspect the vibration dampening mountings to see that the rubbers in the mountings are in good condition If they are torn loose from around the mounting bolts or if the bolt holes in the rubber blocks are enlarged the mountings must be...

Page 127: ... cessories 1 With the engine suspended from a hoist or supported on blocks remove the following parts from the right side of the engine so that the engine can be mounted to an en gine stand if one is available Remove the generator generator brocket and adjusting arm alsa the secand stage fuel filter assembly the fuel pump muffler ail by pass valve assembly air box hand hole caver water drain cock ...

Page 128: ...crews as puller studs to force the flywheel from the hub of the crankshaft 3 Drain the engine oil then remove the oil pan 126 4 Remove the bolts and capscrews attaching the flywheel housing to the rear of the engine block and those attaching the timing gear cover to the front of the block Remove the flywheel housing and the timing gear cover from the block 5 Remove the large nuts holding the balan...

Page 129: ...ylinder liners are clean so that the liners will seat properly Check the stand out of the liner flange above the top surface of the cylinder 127 block This distance must be from 002 to 006 and the difference in stand out between the two liners must not exceed 002 These dimensions must be held in order to obtain proper sealing of the cylinder head compres sion gasket between the cylinder liner and ...

Page 130: ...stall the engine flywheel Due to one offset hole in the flange on the crankshaft the fly wheel can be located in only one position Be sure the contacting surfaces on the fly wheel and the bolting flange of the crank shaft are smooth and free from nicks or burrs 12B Install the attaching capscrews and tighten securely Lock the capscrews in position with a continuous wire 13 Install the pilot bearin...

Page 131: ...nspect en gine oil level fuel oil and cooling system and see that air cleaners have been properly serviced Start engine and allow it to run at 1 2 throttle See that all instrument panel gouge readings are normal The most important factor in running in a new engine or one which has just been overhauled is OPERATING TEMPERATURE The thermostat must function properly to maintain a normal operating tem...

Page 132: ...ressure exerted against the back of the pres sure plate by springs in the pressure ring The pressure ring is actuated by the over center action of the dutch actuating levers when the clutch operating lever is pulled into its engaged position When the clutch is disengaged the friction between the pressure plate driven plate and flywheel are relieved and the clutch brake stops rotation of the driven...

Page 133: ...the clutch operating rod by turning the front adjusting yoke to lengthen or shorten as required to obtain the 1 4 clearance between the operat ing lever and angle E Washing Engine Clutch Oil leaks or over lubrication of the clutch shifting sleeve bearing may cause the clutch facing to be come coated with oil or grease This will cause the clutch to slip even though it is properly adjusted In this e...

Page 134: ...ure plate and pressure ring from the clutch as sembly 2 Remove the capscrews attaching the pressure ring to the pressure plate then remove the pressure ring capscrew spacers Remove the pressure ring from the pressure plate and remove the pressure springs and spring cups 3 Remove the pins connecting the actu9ting lever links to the actuating levers 4 Remove the adjusting ring locking screw and lock...

Page 135: ...k must be removed to smooth it up 11 Inspect the clutch shaft front bearing pilot bearing for wear and lubrication In case of improper lubrication install a new oiling wick assembly Refer to REPLACEMENT OF PILOT BEARING OIL WICK in Section IX 12 Inspect the clutch shaft rear bearing for roughness or wear Replace if the bearing is worn excessively or if it does not turn smoothly when rotated by han...

Page 136: ...3 8 N C bolts 5W in length with Ihe heads cut off 10 line up and hold the housing in place when in stalling Make certain that Ihe needle bear ings in Ihe sliding blocks are pocked with grease before installing the housing 4 Alloch the shifling sleeve bearing lubricating tube in position in the dutch housing 5 Install the clutch bra ke front disc assembly and brake grease shield on the shifting sle...

Page 137: ...g and inspect the clutch broke discs Whenever the lining on the front brake disc is worn down to the rivet heads the lining should be replaced Inspect the rear brake disc for wear and scoring Slight scor ing or uneven wear can be removed by machining 135 however if it is worn or scored excessively it should be replaced C Clutch Brake Removal 1 Remove both brake pedal pads from the brake pedals and...

Page 138: ...Reversal of direction is accomplished by meshing the low and reverse gear on the pinion shaft with the reverse idling gear The sliding gears on the transmission bevel pinion shaft are shifted into mesh by shifter forks actuated by the gear shifting lever They are located for proper mesh by detent notches in the gear shifting shafts and detent balls steel balls in the trans mission housing The slid...

Page 139: ... 8 Remove the transmission case by forcing it forward until the boss on the rear of the case is out of the bore in the steering dutch and flnal drive housing 137 C Transmission Disassembly 1 Place the transmission on a work bench top side up 2 Remove the capscrews attaching the gear shift guide and remove the guide 3 Remove the bolt clamping the gear shifting lever to the shifting arm and remove t...

Page 140: ...k ond the tronsmission cose Coteh the two 2 shifting shoft bolls when removing the intermediote shifting shoft 13 Hold the upper geer shifting fork end pull the shifting shoft out of the fork ond the tronsmission cose Keep the shifting forks with the shofts from which they were removed 14 Unlock end remove the capscrews attoching the bevel pinion shoff reor beoring retoiner to the cose Remove the ...

Page 141: ...ase Start the shaft in the case install the steel locking ball in the shaft then drive the shaft into position d The thrust washers and reverse idling gear are machined to a close tolerance The specified clearance total clearance be tween these parts is 008 to 025 Check the clearance If the clearance is not within the specified limits remove the shaft and replace the necessary parts 2 Install the ...

Page 142: ...haft through the rear bore of the case and into the gears Hold the pinion 140 shaft in place and drive the rear bearing into position in the bore of the case Drive the pinion shaft in until the snap ring on the rear bearing is against the case d Using a depth gauge measure the depth of the recess in the rear bearing retainer and lock the depth gauge Place the depth gauge against the rear face of t...

Page 143: ...t shaft front ball bearing on the input shaft then install the snap ring on the shaft c Install the bevel pinion shaft front ball bearing in the input shaft gear then in stall the snap ring d Place the gear shift housing on a clean bench with the machine face of the hous ing down Make certain the input shaft seal spring assembly boot and rear seal ring bronze are clean and dry Install the baot on ...

Page 144: ...e cement do not use an excessive amount The neoprene ce ment and solvent for thinning can be purchased from your nearest Allis Chal mers Dealer h After the neoprene cement has dried and set thoroughly install the input shaft in the gear shift housing Lubricate the front and rear seal rings with light engine oil and install the rear yoke assembly on the 142 input shaft i Place the universal joint y...

Page 145: ...ch in the shafts g Position the shifting forks so that the rear sides are flush with the ends of the shifting 143 shafts then tighten the shifting fork cap screws slightly Shift each shaft and check to see if the forks are located so the slid ing gears mesh properly with their mat ing gears Reposition the forks on the shafts if necessary and tighten the shifting fork capscrews securely Lock the ca...

Page 146: ...rocket Refer to TRACK RE MOVAL in Section XVII 2 Remove the right hand track driving sprocket Refer to FINAL DRIVE DISASSEMBLY in Section XIV 3 Remove both steering clutches Refer to CLUTCH REMOVAL in Section XII 4 Remove the final drive pinion shaft 60 Tread Model a Unlock and remove the right hand brake drum hub retaining screw then remove the screw lock and retaining washer Turn the retaining s...

Page 147: ...the puller Pull the clutch shaft out of the bevel gear and the steering dutch shaft left bearing cone then remove the bevel gear and bearing cone Remove the pinion puller from the shaft and remove the shaft C Cleaning and Inspection of Parts Clean and inspect all the parts thoroughly as de scribed in pertinent pages in GENERAL MAIN TENANCE INSTRUCTIONS in Section XXI Re place or recondition any da...

Page 148: ...t of adjusting shims without oil seal in place in the housing 7 Position the gear and shaft assembly so that the shaft can now be driven into place in the bearing using the pinion puller bolt Drive on the end of the puller bolt until the 146 8 Lubricate the right hand bearing cone then bolt the right hand bearing retainer with the bearing cup and original amount of adjust ing shims without oil sea...

Page 149: ...n be determined by painting the pinion teeth with a marking compound or bluing then rotate the gear and the tooth bearing will show plainly Refer to Figure No 13 showing the carrect and incorrect tooth bear ings 12 After the backlash of the bevel geor and pinion has been set remOve the steering dutch shaft bearing retainers keep adjust ing shims with respective retainers and install the oil seals ...

Page 150: ...outer bearing cover and gasket 44 Tread Model a With the inner bearing cage inner bear ing oil seal shaft snap ring and bearing cage gasket in place on the final drive pinion shaft install the shaft in the hous ing Hold the final drive pinion in position when installing the shaft Install the bear ing cage attaching capscrews and tighten securely b Drive the inner race of the pinion shaft outer rol...

Page 151: ...sses out of the yokes so that the bearings can be re moved and examined Remove the bearings and the journal crosses 4 Turn the shaft yoke sealing washer cap off the sleeve yoke then pull the shaft yoke out of the sleeve yoke S Wash the parts thoroughly in clean solvent then inspect the components for damage and wear Replace the necessary parts D_ Assembly and Installation The universal joint assem...

Page 152: ... determine the amount of clutch disc wear The steering clutch linkage is properly adiusted when the steering levers each have 3 of free travel measured at the tops of the levers As the clutch discs wear this free travel decreases When the free travel has decreased to less than 1 on adiustment of the clutch linkage is required Free travel of the levers is necessary to insure clearance between the c...

Page 153: ...he oil from their friction surfaces 4 Drain the comportments and allow the clutch es a short time to dry Operate the tractor with a light load or in a low gear until the clutches become thoroughly dry otherwise they may slip due to the solvent on the discs 15 F Clutch Removal 1 Remove the orm cushions from the top of each battery box and remove the capscrews used in fastening the fuel tank to the ...

Page 154: ...Clutch against the pressure plate Refer to Figure No 3 5 Remove the remaining capscrews then loosen the stud nuts evenly until all tension is taken off the dutch springs 6 The Ihrowout plate discs springs etc can now be removed H Clutch Inspection and Repairs When the clutches have been disassembled inspect the following items 1 Steel Discs Specified thickness when new is 084 10 096 Inspect the di...

Page 155: ...he throwout plate 7 Place the brake drum over disc stack then run the nuts down on the studs forcing the pressure plate down until the assembly is securely bolted together 153 8 Using a suitable scale or straight edge meas ure the distance between the machine finished end face of the hub and the machined fin ished face of the throwout plate The throw out plate must extend in from the hub 3 16 plus...

Page 156: ...e lubricating tube has become hard it should be replaced The wick in the lubricating tube may be replaced in the following manner 1 Run a fine wire through one end of the wick 3 8 from the end lap the wire back and twist it to hold the wick 2 Soak the wick in light oil until it is completely saturated heat the oil if necessary 3 Now run the wire through the lubricating tube and pull the wick throu...

Page 157: ...ied position for parking purposes PARKING BRAKE LOCK The broke pedal pods are damped to the pedal aSsemblies with eyebolts and are odiustable for various sized operators The brake pedals are mounted on bushings and require only periodic lubrication Adiustable brake operating rods con nect the brake pedal 10 the broke band operating lever The brake band operating lever is attached to both ends of I...

Page 158: ...Remove the small brake adjusting hole cover from the top of the steering dutch housing 2 Refer to Figure No 1 Turn broke adjuster clockwise until the brake band is drawn tight around the drum then turn the brake ad juster back two turns 156 3 loosen the brake band supporting screw jam nut on the bottom of the steering dutch hous ing Tighten the supporting screw until the brake band contacts the br...

Page 159: ... line with the brake band pins Insert a long 5 16 NC capscrew through the pipe plug hole and turn it into the tapped hole in the upper brake band pin Remove the upper brake band pin and brake band adjusting fork Use the 5 16 NC capscrew to remove the lower brake band pin 157 9 Move the brake band over toward the steer ing clutch throwout bearing Cock the upper end adjusting screw end of the brake ...

Page 160: ...he positive type The final drive pinion shafts are driv n by the bevel gear and steering clutches The final drive pinions drive the intermediate shaft gears the intermediate shaft pinions drive the sprocket shaft gears which in turn drive the track driving sprockets 2 DISASSEMBLY A Removal of Sprocket Shaft 1 Uncouple the track by driving out the master pin then move the tractor backward until the...

Page 161: ...ged or scratched Using a puller sim ilar to the one shown in Figure No 3 pull the track sprocket and remove it from the shaft 8 Remove the capscrews attaching the nnal drive compartment bottom cover and remove the cover Unlock and remove the capscrews attaching sprocket shaft gear lock then re move the capscrew lock and the gear lock NOTE If the lock for the sprocket shaft gea r is not turned in t...

Page 162: ... the one shown in Figure No 5 Remove the intermediate shaft gear and the pinion 160 fig 6 Puller Details Intermediate Shaft Inner Searing Cup 3 If it is necessary to remOve the intermediate shaft inner bearing cup use a special puller as shown in Figure No 6 Insert the puller expander in the cup so that the shoulder of the expander will lock against the back side of the cup Turn the puller shaft i...

Page 163: ...he housing and install the bearings on the intermediate shaft if they were re moved 2 lubricate the bearings and insert the inter mediate shaft without the gears in position in the housing then install the outer bearing cup Install the outer bearing cover using the original amounl of bearing adjusting shims 3 The intermediate shaft bearings are correctly adjusted when they have 10 to 20 inch pound...

Page 164: ...and coot the inside of the lips and Ihe sides of the spring follower assem 162 bly with neoprene cement Press the lips back in place against the spring follower assembly 3_ Coat the outer face of one lip of the rubber boot and the machined face of the bearing retainer with neoprene cement Immediately place the boot and spring follower assembly on the bearing retainer inserting the ends of the pins...

Page 165: ... and allow the neoprene cement to dry and set thorough Iy NOTE When coating the above part with neoprene cementl do not use an excessive amount The neoprene cement and solvent for thinning can be purchased from your 163 nearest Allis Chalmers Dealer D Installation of Pinion Shaft 60 Tread Model 1 Install the inner race of the center roller bear ing and the inner race of the inner roller bearing in...

Page 166: ...houlder of race towards the outer end of the shaft Drive or press the race into the roller bearing Install the snap ring on the shaft Place the bearing cage gasket in position on the cage 164 3 Hold or block the final drive pinion with hub side towards the outside in position in the final drive housing then insert the pinion shaft with the bearing cage assembly into the position in the housing and...

Page 167: ...ring cup then drive the sprocket shaft outer bearing cup in position in the housing 3 Install the bearing retainer with the seal a sembly attached and the seal dirt guard in place on the housing using the correct amount of bearing adjusting shims as deter 165 mined in Step 3 of SPROCKET SHAFT BEAR ING ADJUSTMENT Tighten the attaching capscrews securely 4 Position the sprocket shaft gear so that th...

Page 168: ... 5 Re install the sprocket shaft outer bearing cap and the correct amount of adjusting shims Tighten the attaching capscrews securely NOTE The sprocket shaft outer bearings on tractors prior to Serial Number 4126 re ceived lubrication from the final drive com partments through rifle drilled sprocket shafts Tractors Serial Number 4126 and above do not have rifle drilled sprocket shafts consequently...

Page 169: ...147 foot pounds torque 10 Tighten the capscrews attaching the sprocket shaft bracket to the truck frame 11 Install the capscrews which attach the equal 167 izer spring pad to the truck frame Tighten the capscrews securely 12 Install the oil drain plug in the final drive compartment cover then fill the final drive comportment to the proper level using the specified lubricant 13 Couple the track Ref...

Page 170: ...crews which ore screwed into replaceable topped blocks The construction of the support roller is much the some as the truck wheels except for the mounting method and flange shope of the wheels The track release is a direct acting coil spring mechanism with a protecting guard The track support roller brocket also serves as the front bracket for the track release spring and the rear brocket is welde...

Page 171: ...e bore The puller should then be reversed and used to force the re maining seal and the bushing out the other side of the bore If the pin and bushing are worn they should be replaced New seals should be installed Install the bushing in place in the bore using the puller arrangement if necessary Using a suitable driv ing sleeve install a seal on the pivot shaft so that the distance from the end of ...

Page 172: ...locks approximately one foot high in front of the track and move the tractor forward until the blocks are under the flrst truck wheel Then place blocks approximately one foot high just to the rear of the track and move the tractor backward until the weight is being carried by the track drive sprocket and the track idler In this position the slack should be in the bottom of the track Lock the brake...

Page 173: ...r are pitted they must be replaced II the bearing cups are found to be loose in the bore 01 the truck wheel replace the necessary parts 3 Examine the sealing surfaces of the mating seal rings lor scratches nicks or burrs as 171 these surfaces MUST be smooth and flat If the sealing surfaces are scratched or dam aged in any way both mating seal rings must be replaced 4 Examine the seal spring assemb...

Page 174: ...he attaching capscrews securely 172 6 InstoJl the other bearing retainer complete with seal assembly and the original amount of shims on the truck wheel When tighten ing the attaching capscrews turn the shaft occasionally to be certain that an excessive pre load is not being placed on the bearings The bearings are properly adjusted when a slight drag 15 to 45 inch pounds pre load can be felt when ...

Page 175: ...ings are to be in stalled assemble the inner and outer track release springs with the spring seats com pressing bolt and spacing washer Compress the spring and seats to an assembled length of approximately 24 inches as shown in Figure No 8 2 Place the spring and support roller bracket in position 3 Install the capscrews attaching the support roller bracket to the truck frame and tighten securely 4...

Page 176: ...or are pitted they must be replaced If the bearing cups are found to be loose in the bore of the support roller replace the neces sary ports 3 Examine the sealing surfaces of the mating seal rings for scratches nicks or burrs If the sealing surfaces are scratched or dam aged in any way both mating rings must be replaced 4 Examine the seal spring assembly and make certain that the boat is bonded ti...

Page 177: ...ertain that on excessive pre load is not being placed on the bearings The bearings ore properly adjusted when a slight drag 15 to 45 inch pounds pre load can be felt when turning the shaft by hand If the bearings are too tight or too loose it will be necessary to add or remove the neces sory adjusting shims To do this remove the bearing retainers then add or remove the required number of shims and...

Page 178: ...e bearing retainer strikes the loosened capscrews To p on the upper bracket with a hammer when pressing 6 loosen the capscrews again and repeat the pressing operation until the shaft with bear ing cones lower bearing retainer as idler is installed in the press lower seal assemblies and lower idler bracket assembly are free and can be removed as one assembly 7 Remove the locking wire and attaching ...

Page 179: ...ring cups in the bearing retainers if they were removed 2 If a new seal assembly is to be installed in the bearing retainer the seals should be in stalled at this time so that the neoprene ce 177 ment used for cementing the assembly in place will have sufficient time to dry To Install the Seal Assembly a Place the bearing retainer on a clean bench with the machined face down b Make certain the sea...

Page 180: ...areful to ovoid 178 damaging the seal When tightening the at taching capscrews tUrn the shaft occasionally to be certain that an excessive pre load is not being placed on the bearings The bear ings are properly adjusted when a slight drag 15 to 45 inch pounds pre load con be felt when turning the shaft by hand If the bear ings are too tight or too loose it will be neceS sary to odd or remove odjus...

Page 181: ... The drawbar may swing from side to side on the drawbar plate or it can be held fairly rigid in various positions by a series of holes provided in the drawbar plate and a bolt The drawbar pin may be locked in position with a cotter pin B Removal and Inspection 1 Disconnect the drawbar from the main frame by removing the hinge pin retaining plate and hinge pin ______ F g I Drawbar _____ J 179 2 The...

Page 182: ...to justify the installation of a new set of pins and bushings The pins and bushings and their relation to each other to the sprockets constitute the most impor tant factor in track life Since only the external wear on the bushings is visible some means other than casual inspection must be used to deter mine the amount of wear on the pins and on the bore of the bushing The amount of stretch in the ...

Page 183: ... enough to allow it to crack in service C Track Adjustment The tracks are correctly adjusted when the upper part of the tracks can be lifted 1W to 2 above the support rollers with the use of a bar Proper adjustment is important because rapid wear of the tracks and other affected parts will occur if the tracks are too tight The tracks may drag on the final drive housings if they are too loose To ad...

Page 184: ...rive the tractor forward holding the bar firmly in place so the track will roll around the sprocket 182 5 Hold the track up so it will go over the sup port roller and the front idler 6 Remove the bar and line up the holes in the ends of the track make certain that the 3 8 spacers at each end of the master bushing are in position 7 Drive the master pin in place allowing an equal amount of the maste...

Page 185: ...ain the engine oil C Equalizer Spring The equalizer spring is a leaf type spring pivoting on a pin in the bottom of the main frame and transmits the weight of the front of the tractor to the truck frames The spring stabilizes the tractor and its mounted equipment by permitting the truck frames to oscillate Oscillating truck frames pro vide more uniform traction and minimize the shock imposed on th...

Page 186: ...kwashers and nuts and tighten securely NOTE The two 2 long capscrews 1 W in length are used in the rear holes 3 Remove the cribbing or jocks used to support the crankcase guard 4 EQUALIZER SPRING A Maintenance and inspection Maintenance of the equalizer spring consists of periodic checks for loose bolts and excessive wear of equalizer spring seats and the saddle assembly If the U bolts are broken ...

Page 187: ... GUARD INSTAltAnON in this section NOTE Check the tightness of the U bolts after a few hours of operation 5 R IGID BEAM A Maintenance and Inspection The rigid beam should be inspected periodically for loose mounting bolts and loose Allied Equip ment mounting bolts If the rigid beam becomes bent or damaged it should be repaired or replaced immediately B Removal Refer to Figure No 1 in Section XV 1 ...

Page 188: ...ching the lenders should be checked periodically to see that they are tightened securely The front lender group may be removed by re moving the allaching capscrews The rear fender group may be removed alter removing the fuel tank or the luel tank and rear fender group may be removed as a unit 2 SEATS The seat cushions are of the coil spring type cov ered with a weather resisting cloth The arm rest...

Page 189: ...pedal equipment mentioned in this section may be ordered separately for field installation or the tractor may be purchased with the equipment fac tory installed for a more complete list of avail able spedal equipment contact your nearest Allis Chalmers Dealer PULL HOC K INNER TRUCK EEL GUARD RD __________ Fill_ I Special Eqllipment HD 5 Tractor __________ 187 ...

Page 190: ... hood side plates These components may be purchased separately or as a group THE REAR TANK AND SEAT GUARD is fab ricated of steel plates and bolted to the steering clutch and final drive housing and the fenders This guard protects the rear of the fuel tank and seat THE RADIATOR GRILLE SCREEN has a heavy mesh and should not be confused with a bug screen The grille screen is bolted to the outside of...

Page 191: ...eter as special equipment instruments A Fuel Oil Pressure Gauge Use of a fuel oil pressure gauge is recommended to avoid damage to the fuel oil system by running the engine with excessive or low fuel oil pressure For further information refer to Section VIII 189 B Hour Meter 1 Description The hour meter records the number of hours the engine has operated and is spring driven and electrically wound...

Page 192: ... mounting in place with the attaching screws Ground the short wire black from the hour meter to the inner top of the battery box with the screw pro vided Thread the long wire red through the battery box under the floor plate and through the cowl for installation on the pres sure switch Install the adapter fitting and pressure switch on the back oUhe oil pressure switch of the oil pressure gauge In...

Page 193: ...by the transmission top shaft A simple control lever is mounted on the pulley housing to engage or disengage the pulley shaft sleeve Rola tion is clockwise viewed from the left side of the tractor The pulley shaft speed is 963 R P M with an engine speed of 1800 R P M 2 Installation To install the pulley group remove the cover from the top of the bevel gear compartment Install the coupling shaft wi...

Page 194: ...oupling sleeve in place on the transmission top shaft and the steering clutch and final drive housing Install the 192 attaching capscrews and tighten securely The control lever may then be installed on the right fender and the control rod in stalled Two 2 plugs are provided in the right side of the reversible reduction power toke off case The lower plug is the oil drain plug The top plug is an oil...

Page 195: ...spect the bearings for worn or pitted rollers and races 2 Inspect the outside of the bearing cup outer race and the inside of the cone inner race for marks which indicate creepage 3 Always set up a tapered roller bearing in accordance with the specifications DO NOT EXPERIMENT A properly set up tapered 193 roller bearing will give satisfactory service for a very long time while a bearing pre loaded...

Page 196: ...r smooth file 2 Be sure that all splined shafts are smooth and try all the gears on their respective shafts to be sure that they slide freely on the splines 3 SHIFTING FORKS Check the shifter forks for tightness and proper location on the shifter shafts also make certain that they are not bent as indicated by ununiform wear Observe the shifter prongs for wear on the side faces and the inside faces...

Page 197: ...immerse it in a container of oil and keep it in the container until it is needed 2 Do not use a gasket which is torn hardened or shrunken out of shape 6 GEARS 1 Thoroughly clean and inspect all gears for worn pitted chipped or cracked teeth 7 HOSES 1 Inspect all water hoses air hoses fuel lines and lubricating oil lines for leaks and signs of collapsing or deterioration of the rubber on the inside...

Page 198: ...ilure 2 Inspect the track shoe bolts frequently espe dally if operating over rough hard terrain 3 Replace any broken or missing capscrews nuts or lockwashers 12 MISCELLANEOUS 1 Keep the outside of the engine free from deposits of oily dust which acts as em insula tion material and prevents cooling by radia tion 196 2 Make all adjustments as specified in the manual ...

Page 199: ...er 2 Inside diameter 3 Diameter of piston skirt 4 Clearance of piston with liner 5 Allowable taper 6 Allowable out of round when installed 7 Clearance liner with block 8 Height of cylinder liner above cylinder block 9 Allowable difference of cylinder liner heights above cylinder block between No 1 and No 2 cylinders B Pistons 1 Outside diamete r 2 Piston length 3 Piston pin length 4 Inside diamete...

Page 200: ...ameter inside of shell 3 Diameter of crankshaft connecting rod journals 4 Clearance shell and journal 5 Undersize bearings available H Connecting Rods 1 Length 2 Diameter inside of connecting rod bearing shell 3 Clearance connecting rod bearing shell and journal 4 Width of rod lower end 5 End play lower end on journal 6 Diameter of piston pin 7 Diameter inside connecting rod bushing 8 Clearance pi...

Page 201: ...er roller bushing and pin 5 Outside diameter of push rod upper seat 6 Inside diameter of bore in cylinder head for push rad Size of New Parts 002 to 007 375 45 3 16 Install New Parts When Clearance Exceeds 010 009 1 at Operating Temperature 1 9116 3425 1 000 001 3435 001 000 001 to 003 45 3 64 to 5 64 566 3435 001 000 001 to 003 8740 000 0005 875 001 000 001 to 0025 004 to 006 1 061 000 001 1 062 ...

Page 202: ...ts When Clearance Exceeds 004 OO 0045 004 001 NOTE Strict adherence to the following specifications will assure the proper tightening of various compo nents when assembling an engine Application Injector damp studs Exhaust muffler studs Exhaust muffler nuts Control shaft bracket bolts Cam follower guide bolts Hand hole cover bolts Air intake tube to blower housing bolts Cam and balance shaft thrus...

Page 203: ...o 425 oorto 027 432 to 442 415 to 425 prongs in pinion groove 007 to 027 12 Distance between prongs of the 2nd speed and 4th speed pinion shifter fork 2 405 to 2 410 13 Distance from 2nd speed pinion shifting shoulder face to 4th speed pinion shifting shoulder face in as sembly 2 362 to 2 3B2 14 Clearance 2nd speed and 4th speed pinions in shifter fork prongs in assembly 023 to 048 4 BEVEL GEAR AN...

Page 204: ... retaining nut 1500 5 Foot pounds torque specified for tightening brake drum hub retaining capscrew 300 6 TRUCK WHEELS 1 Pre Iood of truck wheel bearings 15 to 45 in Ibs 2 Standout each end of shaft to face of seal guard assembly 2 000 to 2 005 3 Foot pounds torque specified for tightening truck wheel bracket capscrews 168 to 178 7 TRACK SUPPORT ROLLERS 1 Pre load of bearings in track support roll...

Page 205: ...ng Clutches Equalizer Spring Final Drives Truck Wheels Support Rollers and Track Idlers Tracks Track Release Truck Frames 1 ENGINE Topk No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 A Engine Will Not Turn 1 Engine Is Locked or Seized 2 Starter or Starter Switch inoperative This can be due to extended idle or storage periods or to the improper preparation of the engine for storage in which cas...

Page 206: ... the compression pres sures of each cylinder a Remove the hood and valve rocker arm cover and start with No 1 cylinder to check the compression pressure b Remove fuel lines from both the injector and the fuel connectors for that cylinder c Remove the injector and install the cylinder of the gauge in its place in the same man ner as the injector was installed Use one of fuel lines that were removed...

Page 207: ...he above corrections do not stop the stall ing condition it may be that the tractor is being loaded beyond its capacity 205 E Uneven Running and Excessive Vibration 1 Faulty Injector Equalizing or Timing Refer to ENGINE FUEL SYSTEM in Section II 2 Fuel Supply Erratic or Insufficient Refer to CHECKING OF FUEL SUPPLY SYS TEM Topic No 3 of this section 3 Hunting Governor Check and adjust governor and...

Page 208: ...eo n oil cooler J Excessively Fast Wear on Engine Parts i Oil of Unsuitable Grade Composi tion or Viscosity Change to suitable oil Refer to OPERA TOR S MANUAL for lubricating oil specifi cations 2 Dirt in Oil Use only clean oil in the engine Keep the oil supply in clean storage containers and use clean containers when filling the crankcase Keep the rocker arm COVer tight 3 Oil Used Longer Than Rec...

Page 209: ... Broken Parts Replace broken or excessively worn parts C Starter Does Not Turn Engine 1 Batteries Weak Inspect a nd test the batteries 2 Cables or Connections Loose or Corroded Be sure cables are in good condition and the terminals and ground connections are tight 3 Starter Armature Shaft Bushings Worn This allows Ihe armature to drag on the field coils Replace the bushings 4 General Condition of ...

Page 210: ...nders may be dogged Refer to EN_ GINE FUEL SYSTEM in Section II 6 Check for Inoperative Fuel Pump If all other possible causes for insufficient supply of fuel as explained in the above par agraphs have been eliminated check the fuel pump as outlined in ENGINE FUEL SYS TEM in Section II 4 ENGINE AIR INTAKE SYSTEM Refer to ENGINE AIR INTAKE SYSTEM in Sec tion III for full details on the components o...

Page 211: ...d radiator or water passages inoperative water pump loose or broken fan belts or the thermostat being stuck in the closed position In some coses lime will be deposited in the water possages of the radia tor cylinder block and head in sufficient quantities to restrict the water flow and cause overheating Refer to ENGINE COOLING SYSTEM in Sedion IV for cleaning of the system or repair or replacement...

Page 212: ... Stuck Open Examine the valve Refer to ENGINE LU BRICATING SYSTEM in Section V 6 Oil Filter or Cooler Choked Clean the fllter first If the condition is not corrected inspect and clean the oil cooler Refer to ENGINE LUBRICATING SYSTEM in Section V 7 Oil Pump Screen Clogged Remove the oil pan and the screen and clean the screen 8 Oil Pump inoperative Inspect the pump drive and the pump Refer to ENGI...

Page 213: ...moving the pistons and bending the ends of the lock rings in to exert more pressure agoinst the pin retainers 6 Oil Too Light Change to oil of proper viscosity for the prevailing temperature Refer to OPERA_ TOR S MANUAL for specifications of lubri cants 7 Oil Level Carried Too High Do not fill the crankcase obove FULL mark on the oil level gauge rod S Valve Guides Worn Replace guides Refer to ENGI...

Page 214: ...o function properly can be caused by failure of the ignition or by a poor oil spray Inspect for possible causes in the follow ing order 1 Failure of Ignition a Faulty Wiring Inspect the wires leading from the am meter to the dash light switch from the dash light switch to the heater push button switch from the push button switch to the coil in the heater case and from the coil to the electrode for...

Page 215: ...s re moved 3 Clutch Will Not Release Completely a Clutch Adjusted Too Tight Adjust clutch and clutch linkage 11 TRANSMISSION AND GEAR SHIFT Refer to TRANSMISSION AND BEVEL GEAR in Section XI for further detailed instructions on re pairs A Gears Hard to Shift 1 Tronsmission Oil Too Heavy Refer to OPERATOR S MANUAL for correct viscosity of oil for prevailing temperatures 2 Worn Shifting Controls Rem...

Page 216: ...2 Steering Clutches Not Disengaging Adjusl steering clutches 3 Oil on Brakes Wash brakes and repair oil leak 4 Brake Linkage Binding Free linkage and lubricate C Lining Wears Excessively 1 Improper Adjustment Adjust brakes 2 Linkage Binding Free linkage and lubricate 3 Improper Use of Brakes Refer to OPERATOR S MANUALo for in structions on proper use of brakes D Movement of Brake Pedals When Tract...

Page 217: ... A Front End of Tractor Too Low 1 Spring Leaves Broken Replace broken leaves 2 Pivot Shaft Worn Badly or Broken Replace shaft 3 Pivot Shaft Bushing Worn Replace bushing 15 fiNAL DRIVES Refer to FINAL DRIVES in Section XIV for full details on the components of the Final Drives A Seal Rings Leak 1 Bearings Out of Adjustment Adjust bearings as explained in FINAL DRIVES in Section XIV 2 Seal Boot Torn...

Page 218: ...f Line Adjust idler by shimming Refer to TRUCK FRAMES in Section XV 3 Track Roil Assembly Bodly Worn Repair or install new track 4 Trocks Out of Adjustment Adjust tracks Refer to TRACKS in Section XVII B BeClring Failure 1 Foreign MClteriol in Lubricant Keep lubricant and lubricating equipment dean Use dean containers and be dean about servicing 2 ImprClper Lubricont See Allis Chalmers approved li...

Page 219: ...efer to TRACKS in Section XV 2 Badly Worn Pins Bushings and Rails Install new track assembly 18 TRACK RELEASE A Release Mechanism Does Not Function Properly 1 Dirt Packed in Coils of Springs Remove spring guard and clean dirt from springs 2 Release Springs Broken Replace springs 3 Improper Fit of Track Idler Brackets on Track Idler Slide Bars Adjust by shimming between the lower slide bars and the...

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