Landoll L20 Series Operator'S Manual Download

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MODEL L20, L24, L40 & L50 SERIES

TAG TRAILER

OPERATOR’S MANUAL

1900 NORTH STREET

MARYSVILLE, KANSAS 66508

(785) 562-5381

F-203-0503

05/03

Summary of Contents for L20 Series

Page 1: ...MODEL L20 L24 L40 L50 SERIES TAG TRAILER OPERATOR S MANUAL 1900 NORTH STREET MARYSVILLE KANSAS 66508 785 562 5381 F 203 0503 05 03...

Page 2: ......

Page 3: ...MODEL L20 L24 L40 L50 SERIES TAG TRAILER OPERATOR S MANUAL PURCHASED FROM DATE ADDRESS PHONE NO SERIAL NO i...

Page 4: ...olved in individual problems be tween you your dealer or Landoll Manufacturing To contact NHTSA you may either call the Auto Safety Hotline toll free at 1 800 424 9393 or 366 0123 in Washington D C ar...

Page 5: ...ULE 4 1 4 3 MAINTENANCE PROCEDURES 4 2 4 4 FRAME AND DECKS 4 2 4 5 ELECTRICAL SYSTEM 4 3 4 6 BRAKE SYSTEM MAINTENANCE FOR TRAILER WITH AIR BRAKES 4 3 4 7 BRAKE SYSTEM MAINTENANCE FOR TRAILER WITH ELEC...

Page 6: ...IF NOT AVOIDED WILL RESULT IN DEATH OR SERIOUS INJURY WARNING WARNING INDICATES A POTENTIALLY HAZARDOUS SITUA TION WHICH IF NOT AVOIDED COULD RESULT IN DEATH OR SERIOUS INJURY CAUTION CAUTION INDICAT...

Page 7: ...y 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 785 562 3240 SECTION 5 is a troubleshooting guide to aid...

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Page 9: ...EE SPINDLE TORQUE BEARING ADJUSTMENT PAGE 2 4 GREASE ZERK CAM BUSHING SPIDER 5 8 15 8 CAM BRACKETS 3 4 AIR CHAMBER 12K 15K AIR BRAKE 50 55 5 8 11 HEX LOCK NUT 9K 10K U BOLT 006 038 00 110 130 5 8 11 S...

Page 10: ...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 16 150 188 220 275 320 400 7 8 9 12...

Page 11: ...146 75 85 16 115 125 202 218 109 121 20 160 180 248 272 213 237 24 185 215 303 327 238 262 32 250 290 310 340 LANDOLL CORPORATION HYDRAULIC FITTING TORQUE SPECIFICATIONS 37o JIC ORS ORB REV 10 97 THIS...

Page 12: ...02 450 500 5 8 18 FLANGE NUT WHEELS 006 058 00 275 325 SPINDLE TORQUE BEARING ADJUSTMENT FOR 9K 15K AXLES 1 Install the bearing and washer into the hub Thread on the inner nut rotate the hub and tigh...

Page 13: ...lve or by disconnecting the emergency glad hands 3 1 2 Air Brake System The air brake system of the semitrailer is oper ated from the towing vehicle after coupling The towing vehicle s air system must...

Page 14: ...hand on the front of the trailer The tow ing vehicle s air hose couplings are attached and locked to the appropriate gladhands red emergency line to the gladhand with the EMERGENCY tag and the blue se...

Page 15: ...3 3 Figure 3 3 Electrical Assembly For Trailer w Electric Brakes...

Page 16: ...3 4 Figure 3 4 Electrical Assembly For Trailer w Air Brakes...

Page 17: ...kes 3 3 4 Raise the landing gear parking stands and lock the hitch in place IMPORTANT KEEP BRAKES ENGAGED FOR REMAINDER OF HOOKUP CHECK OUT PROCEDURES AND FOR PARKING 3 4 CONNECTING TOWING VEHICLE SER...

Page 18: ...must not be al lowed to push the towing vehicle or jackknif ing the trailer with the towing vehicle may re sult Application of the trailer brakes to keep the trailer in tow will help prevent this push...

Page 19: ...nected 3 8 8 Pull towing vehicle away from the trailer 3 9 LOADING THE TRAILER 3 9 1 Practice all standard industrial safety standards Do not load any payload that will overload any component of the t...

Page 20: ...ld weather malfunctions 3 11 2 During any extended stop period nei ther the service nor parking brake should be used as they can freeze up Use wheel chocks to secure the vehicle from moving 3 11 3 Che...

Page 21: ...spect the towing vehicle the trailer and trailer parts periodically for damage or signs of pending failure Damaged or broken parts must be repaired or replaced at once Determine the cause of any bindi...

Page 22: ...asing solution off with cold water c Inspect trailer for cause of any reported troubles d Scrape sand prime and repaint areas where finish is missing or where there is evi dence of corrosion e Replace...

Page 23: ...ease wax and other coatings act as insu lators Replacement lamps must be equiva lent to the factory installed lamp 4 6 BRAKE SYSTEM MAINTENANCE FOR TRAILER WITH AIR BRAKES WARNING USE GREAT CARE IF WH...

Page 24: ...ne port alignment for reassembly 3 CAGE THE POWER SPRING following the steps outlined in Section 4 6 2 a 4 Disconnect the slack adjuster from the connecting rod by removing the clevis pin See Figure 4...

Page 25: ...h automatic slack adjusters which compen sate for brake lining wear and keep brakes adjusted Brakes should not be adjusted manually except when relining brakes b Disassembly for Brakes See Figure 4 3...

Page 26: ...4 6 Figure 4 3 Axle and Brake Assembly...

Page 27: ...means for routine brake adjustment to compen sate for lining wear Inspect slack adjusters every 2 000 miles to assure correct operation a Operational Check See Figure 4 4 1 Block wheels to prevent veh...

Page 28: ...the air chamber 6 Swing the guide into the clevis until the appropriate slot totally engages 1 2 pin 7 Observe the guide pointer arrow If the guide pointer is above the clevis rotate clevis countercl...

Page 29: ...hecks or other surface defects resulting from normal use a The maximum diameter cast into the back plate portion of the brake drum is the maxi mum diameter or discard diameter to which the brake drum...

Page 30: ...dius on the hub If interference exists the hub will not be able to function properly j Install inner bearing cone and seal IMPORTANT DO NOT MIX NEW CUPS WITH OLD CONES OR NEW CONES WITH OLD CUPS k If...

Page 31: ...ull mark Use 90 weight gear oil i Check hub oil level after the wheel has set level in one position for a few minutes to allow the oil to work into the bearings 4 11 WHEEL BEARING LUBRICATION AND ADJU...

Page 32: ...mine the trailer for damaged suspension frame shocks linkage etc axle wheel bearings and wheels Proper wheel alignment and wheel bearing adjustment is essential for proper tire wear The simplest form...

Page 33: ...nment Procedure 1 Position trailer on a firm and level surface Insure that the undercarriage is in the rear most position Eliminate any suspension binding due to sharp turns or unusual maneuvers 2 Det...

Page 34: ...tween duals 4 15 2 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 tire must be mounted on a rim and pro...

Page 35: ...4 15 Figure 4 12 Mounting Tires and Wheels Figure 4 13 Stud Tightening Sequence...

Page 36: ...reful not to damage the threads Be sure the valve stems for both the inner and outer tire are ac cessible d Install the flange nut and tighten to 50 foot pounds using the sequence in Figure 4 13 Then...

Page 37: ...OR TYPE AMOCO EXXON PHILLIPS TEXACO 1 Lit multi purpose Grease Rondex Multi purpose Grease Phil Lube M W Grease MarFax All Purpose 2 Multi purpose 90 Gear Oil GTX 85 140 Phil Lube All purpose Gear SAE...

Page 38: ...I I T b SUSPENSION T I T SUSPENSION ALIGNMENT I I BRAKE MAGNETS I BRAKE CONTROLLER I BREAKAWAY STSTEM O I Inspect O Test Operation R Replace T Tighten Adjust Torque L Lubricate C Clean For Trailers w...

Page 39: ...NOTES 4 19...

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Page 41: ...nected Self explanatory Voltage difference between trailer tractor Trac tor supply wire or circuit components too low capacity enlarge wire or component match bulbs with tractor voltage FUSE BLOW OUT...

Page 42: ...Replace bushings Worn or loose wheel bearings Adjust or replace as needed Out of balance wheels and tires Balance wheels and tires RIM FAILURE CRACKING Overinflated tires Deflate tire to proper psi Hi...

Page 43: ...tractor Tighten or adjust connections Brake valve on tractor is applied Release brake Relay emergency valve in emergency position Check line pressure and check valve Restricted tubing or line Locate r...

Page 44: ...ken Wires Repair or replace Loose Connections Find and repair Faulty Ground Find and repair BRAKES PULL TO ONE SIDE Wrong Magnet Lead Wire Color Correct Incorrect Adjustment Adjust Grease or Oil on Ma...

Page 45: ...SIDE Drums of different diameters Replace with drums of same diameter Foreign matter in drums Clean drums out ROUGH OR NOISY BRAKING ACTION Worn drums Pull drums and inspect for any of the following...

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Page 48: ...s Model L20 L24 L40 L50 Series Operator s Manual Re Order Part Number F 203 0503 LANDOLL CORPORATION 1900 North Street Marysville Kansas 66508 785 562 5381 800 428 5655 WWW LANDOLL COM F 203 0503 05 2...

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