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International Harvester Company Cub Lo-Boy C-60, Руководство по обслуживанию

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International Harvester Company Cub Lo-Boy C-60 Скачать руководство пользователя страница 65

Содержание Cub Lo-Boy C-60

Страница 1: ...al Disassembly Inspection and Repair Reassembly Piston Fit in Bore Bearing Fitting Procedure Installation 1 251 261 271 28 1 32 1 35 1 37 1 371 38 1 38 CRANKCASE CYLINDER RE BORING PROCEDURE When to Re Bore Repairing the Block Re Boring Honing Cleaning Checking Clearance 1 38 1 38 1 39 1 39 TIMING GEAR TRAIN AND FRONT COVERGeneral Removal Inspection and Repair Reassembly and Installation GSS 1408 ...

Страница 2: ... 1 52 1 531 54 LUBRICA TI NG 01 L PUMP General Description Oil Pump Pressure Regulator Valve Removal and Disassembly Inspection and Servicing Reassembly COOLING SYSTEM General Description and Operation Removal and Disassembly Inspection and Repair Fan Service Reassembly and Installation 1 55 1 561 571 571 58 TROUBLE SHOOTING TUNE UP GSS 1408 Rev No 4 Printed in United States of America 1 2 ...

Страница 3: ......

Страница 4: ... will occur at the low idle end of the advance curve Crankcase Cylinder bore inches 2 625 2 627 Crankshaft and Main Bearings Crankshaft Type Counterbalanced Numberofmainjournals 3 Main journal diameter inches 1 623 1 624 Crankpin diameter inches 1 498 1 499 Main Bearings Type Tri metal precision Runningclearance inch 002 003 Thrust bearing location Center Thrust bearing side clearance inch 004 008...

Страница 5: ...um alloy Overall length inches 2 875 Diameter inches 2 6230 2 6234 S1drt clearance bottom inch 0016 0024 measured at 900 from pin hole Number of rings per piston 3 Piston pin hole bore inch 6877 6880 Width of ring groove inch Top compression 0955 0965 Second compression 0955 0965 Oil control 1880 1890 Ring clearance in groove inch Top compression 0020 0035 Second compression 0020 0040 Oil control ...

Страница 6: ...ntake inch 3095 3105 Exhaust inch 3095 3105 Clearance in guide Intake inch Exhaust inch Chrome wide slot 1 1860 1865 007 020 001 003 0015 0035 Valve Seats Seat angle degrees 45 Seat width Intake inch 3 64 Exhaust inch 3 64 Valve Guides Length inches 1 34 Inside diameter Intake inch 3115 3125 Exhaust inch 3120 3130 Installed height below crankcase surface inches 1 3 32 Valve Springs Free length Int...

Страница 7: ...ngear 18teeth Type of teeth Helical Backlash inch 003 006 Idler shaft retainer bolt tension 90 ft lbs Lubrication System Oil pressure at 2200 rpm psi 30 Oil pump Type Gear Drive Direct from camshaft Gear bacldash inch 003 006 Number of teeth Idlergear 13 Drive gear 13 Oil pressure valve regulating spring Free length inches 2 31 32 Testlength inches 2 15 32 Test load pounds 9 1 2 Pressure regulatin...

Страница 8: ...e the drain plug in the water inlet elbow and drain the coolant 3 Removethe hoodand side sheet sections 4 Shut off the fuel at the fuel strainer 3 and disconnect the fuel line 4 from the fuel strainer and the carburetor 5 5 Removethe fuel tank 2 GSS 1408 Rev No 41 Printed in United States of America 1 8 ...

Страница 9: ...pe 8 10 Removethe cooling fan assembly and lay in shroud 8 Disconnect the oil lines to the hy draulic pump 9 if so equipped 11 Disconnect the throttle cable 3 from the governor 6 NOTE Be sure to plug all openings in tubes and parts to prevent dirt from entering the system 154 185 Tractors 685 1408 Rev No 41 Printed in United States of America 1 9 ...

Страница 10: ...tor and cranking motor on 184 NOTE Be sure to tag and identify all wires so they can be reconnected cor rectly 13 Disconnectthe oil pressure switch assembly 2 14 Remove the capscrews securing the pedestal front sheet 1 to the engine and remove the front sheet Printed in United States of America GSS 140B Rev No 4 1 9A ...

Страница 11: ... the drive shaft Slide the drive shaft back until it clears the fly wheel retainer 17 Remove the capscrews securing the clutch coupling hub to the flywheel 18 Remove the six capscrews two in front 7 and four in back 9 secur ing the engine to the frame 19 Using attaching brackets FES 100 1 attach a chain hoist to the engine and lift it out of the tractor 1 Attaching brackets FES 100 Printed in Unit...

Страница 12: ...ten securely 2 Install the capscrews securing the clutch coupling hub to the flywheel Slide shaft forward into flywheel retainer to pilot coupling and tighten securely Posi tion shaft in operating position and install belts 3 Install the pedestal front sheet 1 and secure with the capscrews 4 Connectthe oil pressure switch assembly 2 GSS 1408 Rev No 4 Printed in United States of America 1 10 ...

Страница 13: ...e generator voltage reg1l1ator coil positive terminal and head lights alternator and cranking motor on 184 6 Connectthe throttle cable 3 to the governor 6 184 Tractor GSS 1408 Rev No 4 Printed in United States of America 1 11 ...

Страница 14: ...6SS 1408 Rev No 4 Printed in United States of America l llA ...

Страница 15: ...dirt from entering the engine 10 Connectthe oil lines to the hydrau lic pump 9 if equipped 11 Connectthe choke cable 10 to the carburetor 5 12 Install the fuel tank 2 and con nect the fuel line 4 to the carburetor and the fuel strainer 3 13 Install the frame top covert side sheets and hood 14 Fill the crankcase with oil andthe radiator with coolant Refer to the Operator s Manual Connect the batter...

Страница 16: ...THIS PAGE INTENTIONALL V BLANK Printed in United States of America GSS 1408 Rev No 4 1 12 ...

Страница 17: ... Remove the cylinder head cap screws and lift off the cylinder head and gasket Inspection And Repair 1 Checkthe headand gasket for blow by or compression leaks 2 Remove carbon from combustion chamber cavities with a wire brush 3 Clean cylinder head combustion cavities with cleaning solution 4 Carefully inspect head for cracks GSS 1408 Rev No 41 Printed in United States of America 1 13 ...

Страница 18: ...ct circulation of cooling water 8 Be sure to use a gasket Installation 1 Using a new gasket install the cyl inder head on the engine 2 Install the cylinder head cap screws Using the sequence shoWllt tighten evenly in steps to 45 ft lbs torque Be sure to in stall all brackets and mounting clips under the cap screw heads before tightening 3 Install the spark plugs and tighten to 30 ft lbs torque 4 I...

Страница 19: ...ed inspect the entire valve assembly for rust and dirt Clean the assembly with clean ing solvent Inspect for looseness in the valve assembly and for worn or broken valve springs 2 Remove the spark plugs from No 1 cylinder nearest the radiator and No 4cylinder 3 Place a thwnb over the No 1 spark plug opening and slowly hand crank the engjne until an oubward pressure can be felt Pressure indicates t...

Страница 20: ... valves 7 Install the valve cover being sure to use a newgasket Check for any oil leaks 1 No 1 valve 8 Install the intake and exhaust mani fold assembly Removing Valves NOTE When valve assemblies are re moved all parts should be kept in order They may then be reinstalled in the same ports from which removed if they are to be used fQr further service 1 Drain the cooling system and remove the cylind...

Страница 21: ...on General Carbon deposits on the valves and valve seats are normal and cannot be avoided completely However such deposits are detrimental to engine efficiency and valve assembly life as the amount of carbon in the engine increases The rotating mechanism used on the ex haust valves greatly extends the service life of the valves Valves and valve seats should be examined for pitting burning warping ...

Страница 22: ...gs are an indication that the oil pas sages to the valve levers may be blocked causing wear on the valves and guides and resulting in inlproper valve action A de fective gasket under the valve cover will permit the entrance of dirt which will cause undue wear on the valve stems and guides and damage to the valve springs Warpage of the valves and in known ex treme instances that of the crankcase ca...

Страница 23: ...moved to completely reface Maximum heaviness in a valve head is re quired for strength and to provide as large an area as possible for heat dissipation Knife edge valves lead to breakage and warpage WRONG WRONG FEA 64460 CORRECT 4 Clean and examine all valve springs for rust pitting broken or set coils Test each spring against the spring specifica tions see Specifications I using a spring load tes...

Страница 24: ...nsidered un serviceable or that appear close to a serviceable borderline Va lye Seats Remove all carbon and any remaining gas ket material from the crankcase surface Inspect all valve seats for cracks Re mov the carbon from the valve seat re cesses or counterbores Rotocap When the Rotocap is in operation the valve spring is compressed valve opened thebellville washer is brought to bear on the stee...

Страница 25: ... reamed to si e however as they are a press fit it is necessary to burnish them after installation to remove any possible burrs or slight distortion caused by the pressing operation Valves After being thoroughly cleaned and inspected valves that are fit for continued use should be reconditioned as follows 1 Set the valve refacing machine to grind the specified angle of 45 1 2 degrees and dress the...

Страница 26: ...idth contact around the entire circle of seated valve is not shown the angles do not match It will then be necessary to redress the valve seat grinding stones changing the angle sufficiently to correct the error The correction should be made on the valve seat and not on the valve No more material should be removed from the valve face than is necessary to true it up and re m ove the burned or pitte...

Страница 27: ...dis sipate the heat accumulated in the valvehead so as to prevent burning of the seat and warping of the valve head The location of the valve seat on the valve face and its width controls the amount of valve head that protrudes into the com bustion chamber It is obvious that the greater the exposure within the combustion chamber the higher the valve temperature or in other words the more heat it w...

Страница 28: ...lueing Check several times to guarantee that no error was made If a full seat width contact around the entire circle of seated valve is not shown the angles do not match It will then be necessary to re dress the valve seat grinding stones changing the angle sufficiently to correct the error The correction should be made on the valve seat and not on the valve CorrectSeat The location of the area of...

Страница 29: ...cting rods serve as the links be tween the pistons and the crankshaft The surfaces of the rods must be kept free of scoring and dents because of the high stresses under which they function The rod has a bushing at each end the one at the upper end is a bushing for the piston pin which anchors it to the piston The bearing at the crankshaft or lower end is inserted in two halves which fit around the...

Страница 30: ...lock into grooves of the piston pin bore The pin is allowed to float in its bushing in the upper end of the rod The aluminum of the piston is an excellent bearing material and therefore no bushing is provided be tween the pin and the piston The bearing of the steel pin in the aluminum piston is the reason for the tight fit of the pin when the piston is cold It is usually necessary to heat the pist...

Страница 31: ...he crankcase do not allow the skirt of the piston to strike the crank case or connecting rod Mark the pistons so they can be installed in the same posi tion and cylinder from which they were re moved The dome of the piston is stamped with an arrow indicating its position when properly installed 7 Crank the engine by hand to make each rod and cap accessible and remove all pistons and connecting rod...

Страница 32: ...n diameter is 6875 to 6876 inch b Test rods for alignment Rods only slightly misaligned can be straightenedusing the proper equipment Badly twisted or bent rods must be replaced 7 Inspect the connecting rod bushings 3 Inspect the pistons for cracks breaks or scores 4 Measure the piston skirt at right angles to the pin to determine it is worn excessively replace if necessary The specified piston di...

Страница 33: ...is too close clamp a mill file in a vise hold the ring in proper alignment and dress off the ends squarely to obtain the desired gap 12 Inspect the windows of the oil regulating ring and piston for blocked oil ways Failure to keep the oilways clear will result in uneven lubrication and hot spots of the piston and cylinder sleeve All rings should fit loosely in the piston grooves without binding 13...

Страница 34: ...F the pis ton pin can be entered into one boss of the piston by pushing with the hand While the piston is h ot quickly and correctly position the connecting rod inside the piston align the bushing in the rod bore with the piston pin holes in the piston and push the piston pin completely into position Thoroughly dry the piston with compressed air c Push one end of the piston pinuntil it stops again...

Страница 35: ...er bore so that it extends the entire length of the piston 900 from the piston pin location 2 Invert the piston and install it in the bore so that the end of the piston is about 1 1 2 inches below the top of the cylinder block and the piston pin is parallel to the crankshaft axis 3 Hold the piston and slowly pull the scale in a straiv ht line with the feeler gauge noting the pull required to remov...

Страница 36: ...d crush 6 Measuring piston to bore clearance with the piston pin parallel and at right angles to the crankshaft axis will reflect any out of round in the bore 1 When installing precision type bear ings it is important that the bearing shells fit tightly in the rod or crankcase bore To accomplish this the diameter of the bear ing at right angles to the parting line is slightly larger than the actua...

Страница 37: ... from the specified idth Bearing spread should therefore be carefully meas ured and corrected as neceSSar Tbefore installation in an engine Bearing spread can be safely adjusted as follows if care and judgment are exercised Ir 2 f j SOFT MALLET STRIKE LIGHTLY AND SQUARELY a EXCESSIVE SPREAD If meas urement of bearing indicates that dimension A is excessive place bearing on a vood block and strike ...

Страница 38: ...ned plastic material will be found ad hering to either the bearing shell or the crankshaft e To determine the bearing clear ance compare the width of the flattened plastic material at its widest point with the graduations on the envelope The num ber within the graduation on the envelope indicates the clearance in thousandths of aninch f If using virgin lead carefully re move the flattened lead and...

Страница 39: ...nsert the piston and connect ing rod assembly through the top of thecrankcase 2 Push down on the piston carefully until it is in the crankcase bore 3 Wipe clean and oil the crankshaft journals and fit the connecting rod bearings as outlined in Bearing Fitting Procedure II 4 mstall all the pistons connectingrods and bearings in the same manner 5 Check the connecting rod side clear ance by inserting...

Страница 40: ...o re bore for the smallest possible over size pistons and rings If only one or two bores require correction it is not neces sary to re bore all cylinders to the sameoversize Whento Re Bore Replacement piston ring kits may be used to extend the life of the piston if cylinder Preparing the Block Clean the water jacket with materials that vill remove rust and scale and then flush thoroughly Degrease ...

Страница 41: ... use of about 120 g rit stones will produce approximately the correct finish To center the boring machine on each cylinder follow closely the instnlctions of the boring machine manufacturer If the crankshaft has not been removed be sure the crankshaft is out of the vay of the boring cutter when boring each cylinder Cylinders that are too smooth ill retard run in and may result in ring scuffing Whe...

Страница 42: ... a total loss unless the crankcase is thoroughly cleaned Foreign material which remains causes rapid wear of pis tons rings and cylinder walls and will seriously damage engine bearings Checking Clearance Refer to Piston Fit in Bore II page 1 31 Timing Gear Train and Front Cover General The crankcase front cover encloses the timing gear train It is of one piece con struction It also provides mounti...

Страница 43: ...lled 6 Remove the idler gear shaft bolt and remove the idler gear 3 Inspect all gears for excessive wear chipping or cracks 7 Remove the crankshaft gear with a puller 4 Inspect all keys and keyways for wear or damage and replace as necessary 8 Using a puller remove the camshaftgear 5 Be sure to install a new front cover oil seal andgasket 9 Remove the ignition drive seal Reassembly and Installatio...

Страница 44: ...teeth on eachside of the punch mark onthe idler gear with chalk 5 Install the crankcase front cover with a new oil seal and gasket Do not tighten the cap screws at this time 6 Install the fan drive pulley onthe crankshaft Install the cap screw and tighten to 80ft lbs torque 7 Tighten the crankcase front cover cap screws to 20 ft Ibs torque Before installing the governor assembly mark the front sur...

Страница 45: ... the engine 10 Place the number one spark plug cable in a position so that the spark to ground will be audible when hand cranking the engine Then advance or retard the ignition distributor until spark occurs as the 0 mark 1 on the fan drive pulley aligns with pointer 3 while cranking engine Final ignition timing must be made with a timing light The specified ignition timing is 16 degrees 2 before ...

Страница 46: ...f the lobes upon the valvetappets during rotation 9 Lift the valve tappets out of the crankcase Be sure to identify the tappets so they can be installed in their originalbores I nspection and Repair Removal 1 Clean all parts in a cleaning solvent and dry with compressed air As inspectionis completed coat each part with clean engine oil and store safely until reassembly Removal of the camshaft only...

Страница 47: ...7505 inches for the center and 8740 to 8755 inch for the rear 5 Replacethe camshaft gear if the teeth are excessively worn chipped or scored Small nicks or burrs canbe re moved with a hone or fine mill file k FEA 63207 A 6 Checkthe condition of the thrust flange and replace if excessively worn 7 Inspect the tappets Replace any that are scratched or worn 8 Be sure to use newgaskets in re assembly I...

Страница 48: ... crank case and tighten the cap screws to 20 ft lbs torque Access to each of the two screws is through the holes in the camshaft gear 11 Start the engine and bring up to operating temperature a Inspect for oil leaks and check for correct engine oil pressure 6 Install the front cover and fan drive pulley Refer to page 1 39 b Check and adjust the ignition timing 7 Install the key in the rear of the ...

Страница 49: ... after service has been completed Whenever possible the crankshaft should be removed when new bearings are being installed in order to clean the crankcase thoroughly All bear ing surfaces must be free of grit and burrs Small particles of dust and dirt left between the crankshaft and bearings will cause rapid year and scoring of the crankshaft journal and insert Any foreign material left between th...

Страница 50: ...end of the bearing without the positioning nib while turning the crankshaft in the direction of rotation The bearing will slide from position easily 2 Inspect the bearings for wear and evidence of uneven bearing support Ex amine the bearing caps and supporting surfaces of the crankcase for high spots andburrs 3 Inspect the crankshaft journals for scoring and measure the diameter of each journal wi...

Страница 51: ...to correctly index the timing marks on the crankshaft gear with the idler gear and camshaft gear 3 Install the bearing caps over the crankshaft journals being certain to in stall the caps in their correct positions and with the numbered side of the caps to the camshaft side of the engine 4 Checkthe main bearing clearances as follows a Remove the bearing cap and wipe the bearing surface and exposed...

Страница 52: ...precision bearings used no difficulty should be encountered provid ing the crankshaft and or crankcase and caps are in good order 5 Install the bearing caps to their original position and tighten the cap screws to 55 ft lbs torque When installing center main bearing cap hold crankshaft against the rear thrust face of the upper half of the bearing Tighten center cap bolts lightly and tap cap toward...

Страница 53: ...screws to 45 ft lbs torque 8 Install the hydraulic oil pwnp if so equipped 12 Install the oil pan 9 Install new front and rear crankshaft oil seals in their retainers 13 Install the front cover and the fan drive pulley Refer to page1 39 10 Install the rear oil seal retainer 14 Install the engine in the tractor Refer to page 1 11 1 49 ...

Страница 54: ...Lubricating Oil Pump Main oil r gallery j b Oil pump M ill i A Intake screen B I 1 50 ...

Страница 55: ...inder walls The timing gears and governor are lubri cated by oil thrown from the front bearings of the camshaft and crankshaft and from the idler gear stud Another drilled hole from the main gallery supplies oil to the timing idler gear stud and the pressure regulator valve The Oil Pump The gear type oil pump is located at the rear end of the camshaft outside the crank case behind the flywheel The...

Страница 56: ...reely in the crankcase bore and the spring should be straight so that the valve will not be cocked in the bore or on its seat During a complete engine overhaul while the engine is completely disassembled all oil passages should be cleaned using brass rifle brushes Also if crankshaft or connecting rod bearings have failed due to abrasives in the lubricating oil the engine must be completely disasse...

Страница 57: ...ension is not within specifi cations it should be replaced 3 Check regulator valve to make sure it slides freely in its bore 4 Thoroughly clean oil intake pipe and screen Checkscreen and connections for damage 5 Checkoil pwnp drive gear shaft and key for wear or damage 6 Checkpump gears for wear ordamage 7 Checkpump body for wear ordamage 8 Clean crankcase breather 9 Clean oil passages in crankcas...

Страница 58: ...l crankcase pan using new gasket 5 Install oil pump gears 6 Install pump body using new gasket 7 Install the flywheel and secure with the four cap screws Tighten cap screws to 45 ft lbs torque 8 Install the engine in the tractor Refer to page 1 11 9 Fill crankcase with proper amount of specified oil 10 Prime oil pump start engine and check oil pressure 11 Recheck crankcase oil level 1 54 ...

Страница 59: ...n As the water in the engine becomes heated it moves upward and enters the radiator at the top The water is cooled by the air blast drawn be tween the radiator tubes by the fan The cooled water moves to the bottom of the The radiator is the flat tube type and is enclosed in a grill The cooling fan is equipped with a shroud which greatly in creases its efficiency A drain plug lo cated on the water ...

Страница 60: ...ventive Do not use an alcohol type antifreeze when the more permanent ethylene glycol type is available Use only one type of antifreeze mixtures will make it difficult to determine the de gree of protection against freezing Clogging of passages in radiators and crankcase water jackets is aggravated in some communities by hard salts in the water supply Heavy mineral deposits in the water jacket hol...

Страница 61: ... serviceman Generally inspection is per formed after disassembly has been com pleted however in many cases time canbe saved by inspecting parts when they are being removed The fan is mounted on a spindle in the slot ted bracket of the engine front cover It should be as close to the radiator as pos sible without danger of striking it as it turns within the fan shroud 1 Check for bent fan blades or ...

Страница 62: ...ions The dry steam method is recommended since this is both fast and effective After steam cleaning the engine should be wiped dry with a clean cloth to minimize possible rusting After cleaning the exterior of the engine should once more be inspected carefully and a note made of any parts such as brackets covers bolts etc that are bent broken rusted or missing completely The crank case or cylinder...

Страница 63: ...mage is indicated Engine Turns But Will Not Start 1 Fuel system faulty a b Nofuelintank Fill tank with fuel Cleanbowl andscreen Fuel strainer bowl screen clogged Waterin gasoline c Drain gasoline tank gasoline strainer and carburetor Refill ith clean gasoline d No gasoline at carburetor Clean fuel line from tank to carburetor Clean fuel inlet screen in carburetor Check for clogged vent holes in fu...

Страница 64: ...and check spark plugs for correct wiring or loose connections Ignition circuit broken i Wet or fouled spark plugs Remove spark plugs wipe off moisture and dry plugs Remove carbon Reset plug gap refer to Tune Up page 1 69 j Cracked or broken spark plug insulators Ignition switchinoperative Replace spark plugs Place a jumper wire across the two ig nition switch terminals on the back of the switch At...

Страница 65: ... Distributor cap shorting out Missing or Cutting Out at High Speed 1 Distributor breaker plate not grounded properly Check ground lead wire and screws 2 Primary lead not tightened or partially broken Check prima lead wire and screws Adjust point spring tension or replace points 3 Weakpoint spring tension Check plug gap Refer to Tune Up page 1 69 for correct gap Replace plugs if necessary 4 Sparkpl...

Страница 66: ...just timing Refer to Tune Up page 1 69 Clean plugs and reset the gap Refer to Tune Up page 1 69 b Fouled spark plugs c 2 Carburetor Refer to Fuel Sys a Main metering system too lean Adjust carburetor tern Section 2 b Float level set too low Check float level and reset if necessary 3 Cylinder head not bolted downtight Torque cylinder headbolts Refer to page 1 14 for tightening sequence 1 62 ...

Страница 67: ... too low a Check float level Reset if necessary Reposition choke control linkage b Chokeplates partially restricted Restricted throttle linkage Repair or replace c 5 Insufficient air to engine Service the air cleaner 6 Late valve timing Check and adjust timing Refer to Specifications Tighten manifold or install new gasket if necessary 7 Air leaks around intake manifold 8 Exhaustrestricted Removere...

Страница 68: ...ief valve spring broken Clean valve or replace spring 7 Oilpwnpworn Repair or replace 8 Oil diluted or not as specified Change oil regularly using correct grade specified in Operator s Manual Lack of Compression Clean valve guides and stems Grind valves if needed 1 Valvessticking 2 Worn pistons rings and cylinder walls Replace pistons rings and cylinder sleeves Replace 3 Defe tive cylinder head ga...

Страница 69: ...ve guides piston rings pistons andclogged oil control rings Replace worn parts 3 Incorrect gradeof lubricating oil Use grade of lubricating oil specifed in Operator s Manual 4 Over heated engine Refer to Engine Overheats f in this chart Excessiveoil pouredinto crankcase 5 Drain oil Add amount specified in Operator s Manual Excessive Fuel Consumption 1 Distributor a Pointgapincorrect b Readjust poi...

Страница 70: ...e noise stops Repair or replace A flat slap whenadvancingengine speed under load indicates a loose piston Replacepiston Replaceworn bearings A metallic knock when idling and retarding engine speed but disappears under load indicates worn or loose connecting rod bearings The bear ing at fault can be located by short circuiting the spark plugs one at a time The noise will disappear when the cylinder...

Страница 71: ...materials enteringengine Clean all oil passages 7 Oil lines clogged Align or install new connectingrod 8 Connectingrod bent Straighten or install new shaft 9 Crankshaft out of alignment Valves Sticking 1 Install new springs Valve springs weak or broken 2 Gummydeposits from inferior fuel or oil Clean anduse proper fuel or oil 3 Valvestemsscoredor carboned Clean Install newvalves if necessa ry Ream ...

Страница 72: ...place defective hoses Check clamps for fatigue and replace as required 1 Defectivehosesor connections Remove radiator Test for leaks and solder 2 Radiator leaks Check for leaks around water inlet and outlet elbows and cylinder head Replace defective gaskets 3 Damaged gaskets Replace cylinder head and gasket 4 Crackedor wa ed cylinderhead Replace cylinder block 5 Crackedcylinder block Replace 6 Def...

Страница 73: ...e various parts of the engine to be checked cleaned timed or repaired as needed For detailed in formation on the repair and adjustment of the components of the respective Systems Fuel and Electrical refer to Fuel System Section 2 and Electrical System Section 10 4 Replace the lubricating oil filter element and clean the filter case assembly thoroughly 1 Checkthe throttle control 5 Removethe fuel s...

Страница 74: ...p at 023 inch 15 Checkthe float valve assembly forleakage 16 Inspect the generator and cranking motor commutators and clean 10 Check the ignition coil and the primary wires and be sure the connections are clean and tight A few broken wire strands on an otherwise sound connection will still result in difficult starting and improper engine performance 17 Check the ignition timing and cor rect if nec...

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