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4-18

F-473-0212 Edition

MAINTENANCE AND LUBRICATION

Spring Air Brake Chambers

Check for faulty units. Check the condensation holes on 
the underside of the brake chambers to make sure they 
are open. The spring brake has two brake chambers, a 
service chamber and an emergency chamber or spring 
chamber. Service brake chambers should be 
disassembled and cleaned per interval described in 

Table 4-2.

 The diaphragm and any marginal parts should 

be replaced. When replacing the service diaphragm, 
replace the corresponding parts for the other chamber on 
the same axle (to aid in even brake application and 
release). Examine yoke pin for wear and replace as 
necessary. The spring chamber should not be serviced. 
Replace entire unit (both service and spring chamber) if 
spring chamber becomes faulty.

WARNING

Caging the Power Spring

1.

Chock the trailer wheels.

2.

Remove dust cap from spring brake chamber.

3.

Remove the release bolt from its holding brackets 
and insert it into the spring brake chamber. DO NOT 
USE AN IMPACT WRENCH TO CAGE THE SPRING 
BRAKE.

4.

Turn the bolt until the spring brake is caged. This 
should be 2-1/4 to 2-1/2 inches of release bolt 
extension.

5.

The brakes should now be totally released. Do not 
operate loaded trailer with brake manually released.

6.

To reset the spring brake, turn the release bolt until 
the spring is released. Remove the release bolt and 
store it in its brackets.

7.

Snap the dust cap back in place on the chamber.

Removal

1.

Chock all tractor and trailer wheels and drain the air 
system.

2.

Mark the brake chamber for proper air line port 
alignment for reassembly.

3.

CAGE THE POWER SPRING following the steps 
outlined in 

“Caging the Power Spring” on 

page 4-18.

4.

Disconnect the slack adjuster from the connecting 
rod by removing the clevis pin

 (See Figure 4-13.)

5.

Mark all air service lines for proper reinstallation and 
disconnect from the brake chamber.

6.

Remove the brake chamber from the axle brackets.

Installation

1.

CAGE THE POWER SPRING following the steps 
outlined in 

“Caging the Power Spring” on 

page 4-18.

2.

Position the inlet ports by loosening the service 
chamber clamp bands and rotating center housing 
such that ports are located according to alignment 
marks made during disassembly, then retighten the 
clamp bands.

3.

Position the breather hole in the downward facing 
position by loosening the clamp bands on the spring 
brake chamber and rotating the chamber housing 
until the breather hold faces downward. Retighten 
the clamp bands.

4.

Remount the brake chamber on the axle brackets 
and reconnect the air service hoses and the slack 
adjuster connecting rod

 (See Figure 4-13.)

IMPORTANT

Be sure the service line on the service chamber port 
and the emergency line is on the spring brake port.

5.

Check for leakage by charging the air system to a 
minimum of 90 psi and applying soap suds to the 
brake chamber and connections. If a growing bubble 
is detected or bubbles are blown away, locate the 
source of the leak and repair.

6.

Insure that the clamp band is properly seated and 
tight 

before

 uncaging the power spring.

The spring brake chamber employs a spring with 
high forces. Service should not be attempted. 
Serious injury or death may result.

Summary of Contents for 900C Series

Page 1: ...F 473 0212 02 2012 LANDOLL CORPORATION 1900 North Street Marysville Kansas 66508 785 562 5381 800 428 5655 WWW LANDOLL COM Model 900C Series Hydraulic Tail Semitrailer Operator s Manual...

Page 2: ......

Page 3: ...ler 3 4 Tractor and Semitrailer Check Out 3 5 Towing the Semitrailer 3 7 Parking the Trailer 3 7 Uncoupling Towing Vehicle from Semitrailer 3 8 Tail Axle Control Lever 3 9 Air Suspension Dump Valve 3...

Page 4: ...on Maintenance 4 13 Air Ride Suspension 4 13 Air Ride Height Adjustment 4 13 Alignment 4 14 Wheel Alignment 4 14 Axle Alignment 4 15 Manual Alignment Procedure 4 15 Air Ride Suspension Axles 4 15 Brak...

Page 5: ...7 Tire Matching 4 27 Tape Measuring Method 4 27 Straight Edge or String Method 4 27 Mounting Tire and Wheel 4 28 Winches 4 30 Crank Landing Gear 4 30 5 Troubleshooting Guide Electrical 5 1 Tires Wheel...

Page 6: ...iv F 473 0212 Edition...

Page 7: ...nance will void your warranty IF YOU HAVE ANY QUESTIONS CONTACT LANDOLL CORPORATION 1900 NORTH STREET MARYSVILLE KANSAS 66508 or phone 785 562 5381 or 800 428 5655 or FAX 888 527 3909 CHAPTER 5 is a t...

Page 8: ...sure you read and understand the information contained in this manual and on the machine signs decals before you attempt to operate or maintain this vehicle The safety statements contained in this ma...

Page 9: ...000 LB CONCENTRATED IN 10 HYDRAULIC TAIL RATING 24 000 LB DISTRIBUTED GOOSENECK NON TILTING KING PIN SETTING 18 UNDERCARRIAGE TRAVEL 60 HYDRAULIC TAIL HYDRAULIC TAIL LOAD ANGLE 12 TAIL 15 HYDRAULIC T...

Page 10: ...RY THREADS 500 FT LBS SHOCK ABSORBER MOUNTING 150 FT LBS AIR SPRING MOUNTING 1 2 35 FT LBS 3 4 35 FT LBS WHEEL FASTENERS ALL MODELS OUTER SPINDLE NUTS 250 400 FT LBS PILOT WHEEL NUTS 450 500 FT LBS CA...

Page 11: ...0 1 2 20 40 50 65 81 90 112 9 16 12 55 62 80 100 110 137 9 16 18 60 75 90 112 130 162 5 8 11 75 94 110 137 170 212 5 8 18 85 106 130 162 180 225 3 4 10 130 162 200 250 280 350 3 4 16 150 188 220 275 3...

Page 12: ...CIFIED IN FOOT POUNDS PARKER BRAND FITTINGS Dash Size 37 Degree JIC O Ring ORS O Ring Boss ORB 4 11 13 15 17 13 15 5 14 16 21 23 6 20 22 34 36 25 29 8 43 47 58 62 40 44 10 55 65 100 110 57 5 62 5 12 8...

Page 13: ...function Anti Lock Brake System ABS The Anti Lock Brake System of the semitrailer is constant powered by the auxiliary blue circuit of the seven way electrical connector with backup power from the st...

Page 14: ...Figure 3 1 Trailer Terminology AIR RAMP ASSEMBLY UPPER DECK WINCH KING PIN LANDING GEAR CONTROL PANEL TOOL BOX BULKHEAD TOOL BOX OPTIONAL TAIL DECK LOWER DECK ABS DIAGNOSTIC BLINK LIGHT REAR BUMPER E...

Page 15: ...rop Jack the trailer up to take pressure off parking stand and re pin into correct height Remove jack before connecting Drain all air and moisture from the towing vehicle air brake system following to...

Page 16: ...kout procedures and parking Connecting Tractor Services to the Semitrailer 1 Connect the towing vehicle 7 pole electrical plug to the electrical receptacle on the front of the semitrailer See Figure 3...

Page 17: ...itrailer VIN plate located on the front of the semitrailer 5 Check tractor semitrailer rig for air leaks If air leakage is found repair the defect before transporting 6 Check the oil in each hub for p...

Page 18: ...raulic Controls WINCH CONTROL LEVER TAIL AXLE CONTROL LEVER LANDING GEAR CRANK HANDLE WORK LIGHT SWITCH WINCH SPOOL AND TENSION SWITCH RAMP ACTIVATION BUTTON OPTION AIR RIDE SUSPENSION SWITCH DOCK LIF...

Page 19: ...e gauge on the dash of the towing vehicle Pressure should not fall below 90 psi at any time 3 The semitrailer wheels track to the inside of the towing vehicle during turns Thus turning corners require...

Page 20: ...ladhand holders If present install dummy gladhands on trailer couplings 4 Disconnect the 7 pole cable and hydraulic lines from the semitrailer and store with the tractor 5 Pull the tractor fifth wheel...

Page 21: ...your travel cylinder stops dumped the air turn knob to ON c Before returning the trailer axles to transport position return the dump valve knob to the OFF position This will inflate the air suspension...

Page 22: ...on for lowest load angle after pulling undercarriage forward to stabilize trailer for loading CAUTION WARNING 7 Winch or drive the load onto the semitrailer Insure that the load is steering straight u...

Page 23: ...3 20 Assure maintenance schedule is up to date and semitrailer is ready to be pulled Securing the Load WARNING 1 All items of the semitrailer load must be securely tied to the deck front and rear usin...

Page 24: ...12 F 473 0212 Edition OPERATING INSTRUCTIONS Figure 3 4 Steps for Loading and Unloading 900b load unload TAIL TAIL DOCK LOAD POSITION TRANSPORT POSITION GROUND LOAD POSITION UNDERCARRIAGE UNDERCARRIAG...

Page 25: ...be removed Remove safety securing devices Take tension off winch cable and remove winch cable Power load off the trailer WARNING 9 If powered load is secured to both tail and lower deck attention is...

Page 26: ...ch DP winches are equipped with either a manual or air operated freespool clutch depending on the model 1 The manual freespool clutch is operated by pulling lever kickout See Figure 3 5 Figure 3 5 Man...

Page 27: ...cated on the right or curb side end of the winch assembly The function of the winch clutch handle is to engage or disengage the winch allowing it to respond to the Winch Hydraulic lever Figure 3 7 12...

Page 28: ...Dock Leveler Operation DOCK LEVEL ARM ENGAGING POSITION DOCK LEVEL ARM FULLY ENGAGED POSITION BEGIN OF LIFT DOCK LEVEL ARM FULLY ENGAGED POSITION FULL LIFT 30 DOCK LEVEL STOP DOCK LEVEL ARM POCKET LI...

Page 29: ...using TAIL AXLE CONTROL LEVER until hydraulic system works against the fully extended hydraulic axle cylinder 12 Shut off the hydraulic power When using dock levelers the semitrailer must be kept lev...

Page 30: ...ramp UPPER DECK RAMP RAISED POSITION UPPER DECK RAMP RELEASING UPPER DECK RAMP LOWERED POSITION RAMP PALM BUTTON RAMP SUPPORT LATCH RAMP SUPPORT HANDLE LATCH POSITION RAMP SUPPORT LATCH RETRACTED RAMP...

Page 31: ...ase button allowing ramp to settle upon ramp supports See Figure 3 10 CAUTION 2 To lower ramp push ramp activation button in Hold until ramp raises off ramp supports While holding ramp palm button rot...

Page 32: ...e corrective actions as needed CAUTION 2 The ENGINE IGNITION SWITCH is located below the hydraulic controls and behind them on the driver s side of the semitrailer Use the key to start and stop the Hy...

Page 33: ...and turn the ignition switch key to the OFF position Air Ride Operation 1 Trailer air pressure must be maintained above 90 PSI before operating PROTECTION VALVES are used to maintain 65 PSI air brake...

Page 34: ...ess six function radio remote control is available See Figure 3 13 2 The wireless radio remote has six momentary push button switches that operate the functions as labeled on the hand held remote 3 Sp...

Page 35: ...take longer to charge if the transmitter is on during charging Figure 3 13 Remote Control Transmitter Table 3 1 Transmitter Error Code Chart Table 3 2 Receiver Error Code Chart 5 Synchronizing transmi...

Page 36: ...ax REAR VIEW OF TRAILER 12 max CERTIFICATION DECAL TO BE LOCATED ON FORWARD FACING SURFACE 12 INCHES FROM CURB END OF GUARD ABS LIGHT BLINK CODE DIAGNOSTIC TOOL CURBSIDE DECAL TO BE LOCATED ON REARWAR...

Page 37: ...rear of the left side of the trailer See Figure 3 14 Decal or lens marking with ABS to identify the lamp The lamp must illuminate one time whenever power is supplied to the ABS At any time the light r...

Page 38: ...can develop due to contraction with cold Do not over tighten 4 Check tire inflation Tire inflation decreases when the temperature decreases 5 Periodically check drain holes in the bottom of the relay...

Page 39: ...rect the problem before using the tractor or trailer 2 Use Troubleshooting Guide on page 5 1 to check for SYMPTOMS and PROBLEMS of any trailer system not functioning correctly or where wear distortion...

Page 40: ...ubrication Points 1 of 2 WINCH GEAR CASE 2 WINCH CABLES 4 KINGPIN PLATE 3 HYDRAULIC RESERVOIR ENGINE PACKAGE 1 HUB OIL 5 900b lube p1 LANDING GEAR 3 ENGINE CRANKCASE 6 DETAIL A DETAIL A TAIL ROLLERS 3...

Page 41: ...AE 90 Meropa 220 SAE 90 3 ALL YEAR Lit Multi purpose Grease Rondex Multi purpose Grease Phil Lube M W Grease MarFax All Purpose 4 ALL YEAR Industrial Oil 32 Estic 32 Condor 32 or Magnus 32 Regal Oil R...

Page 42: ...mechanical surfaces Values are based on the physical limitations of clean plated and lubricated hardware In all cases when an individual torque value is specified it takes priority over values given...

Page 43: ...T I I AIR RIDE SUSPENSION I T I T FRAME AND U C ROLLERS L 3 c HYDRAULIC OIL I I R 1 c HYDRAULIC FILTER R R HOSES Inspect Replace as needed I I I R WINCH GEAR CASE I I 2 c PLASTIC WEAR STRIPS I I C 3 g...

Page 44: ...engines X4 CHECK VALVE CLEARANCE LP and natural gas conversion engines X4 CHECK VALVE CLEARANCE extended service life engines X4 CLEAN CARBON AND LEAD DEPOSITS cylinder head X4 NOTES 1 Check for fuel...

Page 45: ...the hydraulic oil level with hydraulic cylinders in the retracted position and the hydraulic pump disengaged Enough volume in tank approximately 15 gallons above hydraulic oil level must be available...

Page 46: ...IGHTS S1 DS23 DS24 DS25 DS26 LIGHT SWITCH 7 WAY RECEPTACLE FRONT OF TRAILER MARKER SLOPE LEFT DS5 MARKER SLOPE RIGHT DS6 MARKER LEFT TURN DS7 MARKER RIGHT TURN DS8 MARKER MID LEFT DS9 MARKER MID RIGHT...

Page 47: ...OUTPUT YELLOW DOCK ARM UP OUTPUT BROWN WINCH IN OUTPUT BLUE WINCH OUT OUTPUT GREEN TAIL UP OUTPUT WHITE TAIL DOWN OUTPUT BLACK GROUND RED POWER 9 TO 30 VDC 9 TO 30 VOLT L1 WINCH OUT UP L2 WINCH IN L3...

Page 48: ...YELLOW J9 ABS ECU VALVE CONNECTOR DS10 MID RIGHT SIDE MARKER YELLOW J10 REMOTE RECEIVER CONNECTOR DS11 LEFT REAR SIDE MARKER RED J11 REMOTE CONNECTOR DS12 RIGHT REAR SIDE MARKER RED J12 FRONT CORNER M...

Page 49: ...rosion removed source of corrosion neutralized and the terminals resealed protected and insulated 4 Fuse or circuit breaker burn out or blow out usually indicates an electrical short circuit although...

Page 50: ...4 12 F 473 0212 Edition MAINTENANCE AND LUBRICATION Figure 4 5 Air Ride Suspension System Figure 4 6 Air Ride Height Adjustment aride345...

Page 51: ...height is dependent upon suspension ride height and or axle brake size 4 Lower the trailer by exhausting air from the air springs by moving the control arm to the down position about 45 until the axl...

Page 52: ...xle Double point end against the inner and outer wheel bearing surfaces of the spindle being checked and the other point on the inner bearing surface on the other spindle See Figure 4 7 3 Move the axl...

Page 53: ...t be replaced immediately Air Ride Suspension Axles The air ride suspension is aligned and adjusted at the factory and it should not be necessary to align the axles If however it does become necessary...

Page 54: ...4 16 F 473 0212 Edition MAINTENANCE AND LUBRICATION Figure 4 8 Checking Axle Alignment Figure 4 9 Examples of Camber...

Page 55: ...he bottom of each air reservoir vents the tank to drain collected water and oil If held open air pressure in the tanks is relieved causing the emergency or parking brakes to be applied See Figure 4 10...

Page 56: ...s and drain the air system 2 Mark the brake chamber for proper air line port alignment for reassembly 3 CAGE THE POWER SPRING following the steps outlined in Caging the Power Spring on page 4 18 4 Dis...

Page 57: ...usters which compensate for brake lining wear and keep brakes adjusted Brakes should not be adjusted manually except when relining brakes Disassembly for 12 1 4 X 7 1 2 Brakes 1 Release brakes and bac...

Page 58: ...4 20 F 473 0212 Edition MAINTENANCE AND LUBRICATION Figure 4 12 Axle and Brake Assembly...

Page 59: ...the lower cam roller Lift the top shoe and take out the top cam roller 6 Lift out the shoe retractor spring which is now free of tension 7 Swing the lower shoe back approximately 180o to relieve the t...

Page 60: ...y released position to the applied position by marking the push rod where it exits the air chamber before and after application 7 If the brakes have been running tight the control arm location should...

Page 61: ...gth 14 Install the slack adjuster on the cam shaft 15 Rotate the manual adjuster shaft CW until the slack adjuster arm holes align with the clevis Install 1 2 and 1 4 pins and cotter pins Adjusting Sl...

Page 62: ...nal wear WARNING 3 Replacement of the brake drum is required if any of the following conditions exist a The brake drum is cracked b The brake surface is heat checked grooved or worn beyond the rebore...

Page 63: ...on and Adjustment on page 4 26 m Install the hub cap with the proper gasket Tighten the cap screws of the hub cap to 15 to 20 ft lbs of torque n Remove the filler plug and fill the hub cavity to the r...

Page 64: ...2 Loosen the inner spindle nut to remove pre load torque 3 Hand tighten the inner adjustment nut then back off 1 4 turn 3 8 turn maximum 4 Install lock ring lock ring must engage pin on inner spindle...

Page 65: ...completed Remove any foreign objects from between duals Tire Matching Both tires on the same spindle must be the same size in order to properly distribute the load and braking forces between them The...

Page 66: ...heel taper and brake drum 3 Position the outer disc wheel being careful not to damage the threads Be sure the valve stems for both the inner and outer tire are accessible 4 Install the flange nut and...

Page 67: ...NION SHAFT 1 SPEED ROLL PIN COVER SCREW COVER 2 SPEED THRUST BEARING COLLAR INNER LEG ASSEMBLY STD SHOE SHOE AXLE OUTPUT SHAFT SPIRAL PIN INPUT SPUR GEAR BUSHING SHIFT HOUSING SHIFT HOUSING BOLT GREAS...

Page 68: ...he cover a suitable silicone sealant must be used Dow Corning 700 or equal is recommended c Remove grease before disassembly Drive spiral pins from output spur gear and input gear d Then drive out out...

Page 69: ...ires Replace wire Ground wire loose Clean and tighten ground LIGHTS FLICKERING Wires shorted or loose Locate insulate replace or tighten Grounding through fifth wheel Locate broken ground wire tractor...

Page 70: ...LDERS Under inflation Increase inflation to correct PSI Check axle alignment See Tire Inflation on page 4 27 Overload Loads are above rated tire capacity DO NOT load above rated tire capacity SHOULDER...

Page 71: ...rs Replace defective parts Axles not parallel Re align axles AIR RIDE HEIGHT PROBLEMS TOO HIGH Axle to control valve linkage Readjust linkage Height Control Valve internal leak Repair or replace valve...

Page 72: ...te per Figures 4 1 and 4 2 Worn brake shoe bushing Replace bushing Brake drum distortion Replace drum Broken brake chamber spring Replace spring Brake chamber pushrod binding Re align brake chamber br...

Page 73: ...XCESSIVE LEAKAGE WITH BRAKES RELEASED Relay emergency valve leaking Repair or replace valve Leaking tubing or hose Replace defective part EXCESSIVE LEAKAGE WITH BRAKES APPLIED Relay emergency valve le...

Page 74: ...s Also check for operating conditions or loads that create severe or excessive brake applications BRAKES PULL TO EITHER SIDE Drums of different diameters Replace with drums of same diameter Foreign ma...

Page 75: ...ings Excessive load Check unit specifications for load limit See Standard Specifications on page 2 1 Slipping or broken pump drive Repair or replace couplings Check for alignment SYSTEM OPERATES ERRAT...

Page 76: ...r dirty oil Replace clean or add oil as needed Water in oil Replace oil Air leaks Check suction line and component seals for suction leaks Replace defective parts NOISY PUMP Low incorrect foamy oil Re...

Page 77: ...ace as necessary CERTAIN FUNCTIONS DO NOT WORK Check the wiring connection from the system to the valve coil for the output function that does not work Tighten loose connections Check LED status displ...

Page 78: ...5 10 F 473 0212 Edition TROUBLESHOOTING GUIDE Page Intentionally Blank...

Page 79: ......

Page 80: ...900C Series Hydraulic Tail Semitrailer Operator s Manual Re Order Part Number F 473 0212 LANDOLL CORPORATION 1900 North Street Marysville Kansas 66508 785 562 5381 800 428 5655 WWW LANDOLL COM F 473 0...

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