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Landoll 600C Series Operator's Manual

Semitrailer
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MODEL 600C SERIES
SEMITRAILER
OPERATOR'S MANUAL
1900 North Street
Marysville, KS 66508
(785)562-5381
F-477-0808
08/08

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  • Page 1 MODEL 600C SERIES SEMITRAILER OPERATOR’S MANUAL 1900 North Street Marysville, KS 66508 (785)562-5381 F-477-0808 08/08...
  • Page 3 MODEL 600C SERIES SEMITRAILER OPERATOR’S MANUAL PURCHASED FROM: DATE ADDRESS: PHONE NO.: SERIAL NO.:...
  • Page 4 424-9393 (or 366-0123 in Washington, D.C. area) or write to: NHTSA, U.S. Depart- ment of Transportation, Washington, D.C. 20590. You can also obtain other infor- mation about motor vehicle safety from the Hotline. In the event of a defect or problem with your LANDOLL equipment, please notify LANDOLL CORPORATION: LANDOLL CORPORATION...

  • Page 5: Table Of Contents

    TABLE OF CONTENTS SECTION DESCRIPTION PAGE NO. INTRODUCTION ........1-1 STANDARD SPECIFICATIONS.
  • Page 6 SAFETY PRECAUTIONS THIS IS THE SAFETY ALERT SYMBOL. IT IS USED TO ALERT YOU TO POTENTIAL INJURY HAZARDS. OBEY ALL SAFETY MESSAGES THAT FOLLOW THIS SYMBOL TO AVOID POSSIBLE INJURY OR DEATH. DANGER DANGER INDICATES AN IMMINENTLY HAZARDOUS SITUA- TION WHICH, IF NOT AVOIDED, WILL RESULT IN DEATH OR SERIOUS INJURY.

  • Page 7: Introduction

    PARTS LIST is a separate manual showing the various assemblies, subassemblies, and sys- tems. Refer to that manual when ordering Landoll replacement parts. Order parts from your Landoll dealer. WARRANTY The Warranty Registration form is located with the product documents. Fill it out and mail it within 15 days of purchase.

  • Page 9: Standard Specifications

    STANDARD SPECIFICATIONS CAPACITY*: TANDEM AXLE: ........70,000 LB. DISTRIBUTED STANDARD FRAME DESIGN (660 MODEL) .
  • Page 10 LANDOLL CORPORATION GENERAL TORQUE SPECIFICATIONS (REV. 4/97) THIS CHART PROVIDES TIGHTENING TORQUES FOR GENERAL PURPOSE APPLICATIONS WHEN SPECIAL TORQUES ARE NOT SPECIFIED ON PROCESS OR DRAWING. ASSEMBLY TORQUES APPLY TO PLATED NUTS AND CAPSCREWS ASSEMBLED WITHOUT SUPPLEMENTAL LUBRICATION (AS RECEIVED CONDITION).
  • Page 11 LANDOLL CORPORATION HYDRAULIC FITTING TORQUE SPECIFICATIONS JIC, ORS, & ORB (REV. 07/2008) THIS CHART PROVIDES TIGHTENING TORQUES FOR HYDRAULIC FITTING APPLICATIONS WHEN SPECIAL TORQUES ARE NOT SPECIFIED ON PROCESS OR DRAWING. ASSEMBLY TORQUES APPLY TO PLATED CARBON STEEL AND STAINLESS STEEL FITTINGS ASSEMBLED WITHOUT SUPPLEMENTAL...

  • Page 13: Operating Instructions

    OPERATING INSTRUCTIONS 3-1 GENERAL This section supplies information for operation 3-1.2 Parking Brake of the semitrailer. It describes and locates controls The parking brakes are automatically applied and gives general operation procedures. Read all by spring pressure with the air actuators of the instructions, warnings, cautions, and danger notes braking system when air pressure in the emer- before attempting to operate the semitrailer.
  • Page 14 Figure 3-1 Front Trailer Terminology Figure 3-2 Rear Trailer Terminology...

  • Page 15: Pre-Coupling Of Semitrailer And Tractor

    3-1.5 3-1.6 Electrical Hydraulic The only electrical operation required of the Most controls are located on the driver’s side operator is interconnection of the towing vehicle of the trailer. A hydraulic pump must be coupled to electrical cable plug with the semitrailer electrical the trailer hydraulic system, or the optional hydrau- receptacle.

  • Page 16: Coupling Of The Tractor To The Semitrailer

    3-3 COUPLING OF THE TRACTOR TO THE SEMITRAILER CAUTION DANGER PUSHING THE SEMITRAILER BACK- KEEP ALL PERSONNEL CLEAR OF WARDS CAN DAMAGE PARKING FRONT, REAR, AND SIDES OF TOW- STANDS. ING VEHICLE AND SEMITRAILER DUR- 3-3.4 Verify the vehicle coupling is secure by ING COUPLING, COMPONENT OPERA- attempting to pull the tractor forward a few TIONS, AND UNCOUPLING.

  • Page 17: Tractor And Semitrailer Check-Out

    3-5 TRACTOR AND SEMITRAILER CHECK-OUT WARNING 3-5.2 The optional HYDRAULIC LANDING GEAR lever is located on the left side En- FAILURE TO PROPERLY SET AND gine Control Panel (See Figure 3-11). It has three positions: CHECK PARKING BRAKE, AND CHOCK WHEELS WHEN PARKING RETRACT In this position, the landing gear are AND DURING STORAGE, COULD AL-...
  • Page 18 WINCH CLUTCH AND TENSION CONTROL TRAILER TILT LEVER WINCH HYDRAULIC LEVER AXLE CONTROL LEVER m139521 op Figure 3-4 Hydraulic Controls...

  • Page 19: Towing The Semitrailer

    3-5.6 Check tire inflation, adjust as needed to 3-5.9 Check tractor air pressure. Pressure the pressure listed on the semitrailer VIN must not fall below 90 psi, even after activat- plate, located on the front of the semitrailer. ing brakes a couple of times. Set parking brake and carefully remove all wheel chocks.

  • Page 20: Parking The Trailer

    3-6.2 Monitor the air pressure gauge on the WARNING dash of the towing vehicle. Pressure should not fall below 90 psi at any time. 3-6.3 The semitrailer wheels track to the in- ALWAYS CHECK BEHIND AND UNDER side of the towing vehicle during turns. Thus, THE TRUCK AND SEMITRAILER FOR turning corners requires a wide swing to pre- PERSONS OR OBJECTS BEFORE...

  • Page 21: Uncoupling Towing Vehicle From Semitrailer

    3-8 UNCOUPLING TOWING VEHICLE FROM SEMITRAILER 3-8.1 Park the semitrailer according to instruc- For hydraulic landing gear, remove pin, ex- tend landing gear with lever on Engine Con- tions in Section 3-7. trol Panel until some weight of the trailer is on 3-8.2 Lower the landing gear: the landing gear.

  • Page 22: Axle Control Lever

    3-10 AXLE CONTROL LEVER LOAD In this position, the undercarriage The AXLE CONTROL lever (See Figure 3-4) slides forward for loading. is located on the control panel. It is the bottom CENTER This is the neutral position. lever with three positions: TRANSPORTIn this position, the undercarriage slides to the rear.

  • Page 23: Pull Out Extensions

    3-12 PULL OUT EXTENSIONS DANGER CAUTION 1. DO NOT OPERATE IF ANY EXTEN- DO NOT PULL EXTENSIONS OUT OF SION IS NOT LOCKED IN PLACE BY TRAILER FRAME WITHOUT ADE- SPRING LOADED LOCKING PIN. IN- QUATE SUPPORT. FAILURE DO SO SPECT ALL EXTENSIONS TO INSURE MAY CAUSE INJURY.

  • Page 24: Loading Procedure

    3-13 LOADING PROCEDURE DANGER 1. DO NOT GO NEAR UNDERCAR- 3-13.1 Practice all standard industrial safety standards. Do not load any payload that will RIAGE WHEN CAM ROLLERS ARE overload any component of the trailer or PARTIALLY OUT O F POCKETS. cause an unsafe condition.
  • Page 25 CAUTION CAUTION IN LOADING OR UNLOADING POSI- STANDARD TANDEM AXLE SEMI- TION, THE APPROACH PLATE TRAILER MAXIMUM CONCENTRATED SHOULD BE RESTING O N THE LOAD IN A 10FT. AREA IS 50,000 LBS. GROUND AND THE UNDERCARRIAGE AND 40,000 LBS. FOR A TANDEM FULLY FORWARD.
  • Page 26 Figure 3-7 Steps for Loading and Unloading 3-14...

  • Page 27: Unloading Procedure

    3-13.12 After bed tilt angle is fully lowered, 3-13.13 Recheck that load is properly secured. move the undercarriage to the rear until it is If necessary, unsecure the load, move load in transport position. The trailer deck will slightly forward or rearward on the load bed lower as the undercarriage rollers go into to get correct weight distribution on kingpin pockets.
  • Page 28 3-14.11 Before returning the semitrailer to IMPORTANT transport position insure that there is suffi- MAXIMUM ANGLE IS ONLY INTENDED IF RE- cient distance between the load and the rear QUIRED UNLOADING NON-POWERED of the semitrailer so that the semitrailer does PRODUCTS AND TO TRANSFER LOAD TO not hit the load when being folded back to TRACTOR.

  • Page 29: Work Light (Optional)

    3-15 WORK LIGHT (OPTION) The WORK LIGHT SWITCH is on the hydrau- lic control panel (See Figure 3-4). It illuminates the hydraulic control panel and controls the optional work lights mounted on the bulkhead. The work lights illuminate the upper deck. 3-16 WINCH CONTROLS DANGER WARNING...
  • Page 30 3-16.2 DISENGAGE When the handle is placed is this po- The WINCH CLUTCH HANDLE (See Figure 3-8 and 3-9) is located on the right or sition, the winch is disengaged. This curb-side end of the winch assembly. The allows the spool to “free-wheel” and function of the WINCH CLUTCH HANDLE is the winch is not affected by use of to engage or disengage the winch, allowing it...

  • Page 31: Dock Leveler Control Operation (Option)

    c. The 20,000 lb and 30,000 lb PNEUMATIC 2. When reducing from a higher to a lower WINCH CONTROL has two positions. setting, first reduce to some pressure less than that desired, then bring up to the RELEASE In this position, the winch is disen- desired point.
  • Page 32 Figure 3-10 Dock Leveler Operation 3-20...
  • Page 33 CENTER This position is neutral for either con- CAUTION trol. When either control is in this po- sition, there is no effect on either cyl- BE SURE TO CHECK THAT THE DOCK inder. LEVELERS ARE FULLY RETRACTED When the control for either cylinder BEFORE MOVING THE SEMITRAILER.

  • Page 34: Hydraulic Power Supply Engine Operation (Option)

    3-18 HYDRAULIC POWER SUPPLY ENGINE OPERATION (OPTION) CAUTION 3-18.1 The Hydraulic Power Supply Engine system is used to power the hydraulic func- tions, should the tractor not be equipped with IF THE HYDRAULIC FLUID LEVEL IS hydraulic hookups. LOW DURING OPERATION, THE SEMI- TRAILER MAY NOT OPERATE COR- IMPORTANT RECTLY, RESULTING IN DAMAGE TO...

  • Page 35: Air Ride Operation

    3-18.3 The HYDRAULIC POWER SUPPLY CAUTION ENGINE CHOKE (See Figure 3-11) is lo- cated to the left of the Engine Ignition Switch on the driver’s side of the semitrailer. The DO NOT CRANK ENGINE FOR MORE purpose of the Choke is to aid the starting THAN 10 SECONDS.

  • Page 36: Bulkhead (Option)

    Figure 3-12 Bulkhead 3-19.3 The Model 610C triple axle semitrailer, CAUTION with 10’-1" spread between front and rear ax- les is equipped with additional height control valves to adjust the suspension during load- INSURE SUSPENSION AIR BAGS ARE ing and unloading operations. When moving INFLATED ON ALL AXLES WHEN MOV- the undercarriage from transport to load posi- ING UNDERCARRIAGE FROM LOAD...

  • Page 37: Remote Control (Option)

    RED ERROR CODE GREEN SIGNAL LIGHT LIGHT TRANSMITTER POWER REMOTE COVER TILT TILT DOWN WINCH WINCH 6 FUNCTION DECAL AXLE AXLE AHEAD BACK 600C remote control op Figure 3-13 Remote Control Transmitter 3-21 REMOTE CONTROL (OPTION) 3-21.1 A wireless six function radio remote 3-21.4 Address programming: control is available (See Figure 3-13).
  • Page 38 Figure 3-14 Rear Impact Guard and Antilock Brake System 3-26...

  • Page 39: Rear Impact Guard System

    3-22 REAR IMPACT GUARD SYSTEM Vehicle standards FMVSS No. 224, Rear Im- The standard also specifies minimum force pact Protection, requires all 600 Series trailers and energy absorption requirements for the guard. manufactured after January 26, 1998 shall be A DOT decal certifies that the guard meets FMVSS equipped with a rear impact guard certified by the No.

  • Page 40: Anti-Lock Brake System (Abs)

    3-23 ANTI-LOCK BRAKE SYSTEM (ABS) Vehicle standards FMVSS No. 121, anti-lock brake system requires all trailers manufactured af- CAUTION ter March 1, 1998 with air brake systems to have ABS. Each trailer (including a trailer converter dolly) shall be equipped with an anti-lock brake THE AUXILIARY (BLUE) CIRCUIT IS system that controls the wheels of at least one axle FOR POWERING THE SEMITRAILER...

  • Page 41: Cold Weather Operation

    3-24 COLD WEATHER OPERATION 3-24.3 Check all structural fasteners, air sys- 3-24.1 Cold weather causes lubricants to con- tem fittings, gaskets, seals and bearings for geal, insulation and rubber parts to become looseness that can develop due to contrac- hard, which may lead to problems found in tion with cold.

  • Page 43: Maintenance And Lubrication

    MAINTENANCE AND LUBRICATION This section contains instructions necessary for proper maintenance of the semitrailer. The 600C semitrailer is designed for years of service with minimal maintenance. However, proper mainte- nance is important for durability and safe operation and is an owner/user responsibility. 4-1 MAINTENANCE SCHEDULE Trailer maintenance includes periodic inspec- b.
  • Page 44 WINCH (12,000 LB ONLY) (#3) WINCH GEAR CASE (#2) ENGINE PACKAGE OIL RESERVOIR (#1) WINCH CABLES (#4) ENGINE CRANKCASE (#6) TILT CYLINDERS (#3) LANDING GEAR (#3) PIVOT PIN (#3) CABLE ROLLERS (#3) HUB OIL (#5) KINGPIN, PLATE, HINGE, AND LATCH (#3) DOCK LEVELER (#3) 600c lube points p1...
  • Page 45 CENTRALIZED GREASE LOCATION CAMSHAFT BUSHINGS SLACK ADJUSTERS (#3) CENTRALIZED 600c lube points p2 GREASE SYSTEM Figure 4-2 Lubrication Points (2 of 3)
  • Page 46 CENTRALIZED GREASE LOCATION CAMSHAFT BUSHINGS SLACK ADJUSTERS (#3) CENTRALIZED 600c lube points p3 GREASE SYSTEM Figure 4-3 Lubrication Points (3 of 3)

  • Page 47: Maintenance Procedures

    LUBE SEASON BRAND AND PRODUCT (WEIGHT AND/OR TYPE) AMOCO EXXON PHILLIPS TEXACO ALL YEAR Rycon MV HDX Plus 10W Mangus Oil Rando HD-AZ A KV 5W-20 SUMMER Permagear EP 460 Spartan 460 Phil Gear Lube 460 Meropa 460 SAE 140 SAE 140 SAE 140 SAE 140...
  • Page 48 NORMAL OPERATING SERVICE INTERVALS SERVICE TIMES 1st 5 Weekly Monthly Yearly INTERVAL : Months ITEM MILES 2,000 12,000 25,000 LIGHTS WIRING & CONNECTIONS FASTENERS I, T KING PIN AND PLATE C,I,L BRAKE AIR SYSTEM RELAY VALVES I, C BRAKE ADJ & WEAR I, T SLACK ADJUSTERS CAMSHAFT ASSYS...
  • Page 49 ENGINE MAINTENANCE SCHEDULE OPERATION AFTER EACH CYCLE OF INDICATED HOURS FILL FUEL TANK CHECK OIL LEVEL CHECK AIR CLEANER FOR DIRTY, LOOSE, OR DAMAGED PARTS CHECK AIR INTAKE AND COOLING AREAS, CLEAN AS NECESSARY SERVICE PRECLEANER ELEMENT SERVICE AIR CLEANER ELEMENT CHANGE OIL CHECK SPARK PLUG CONDITION AND GAP REMOVE COOLING SHROUDS AND CLEAN COOLING AREAS...

  • Page 50: Gooseneck, Frame, And Deck

    If any cracks or latch (See Figure 4-4). breaks are found, contact the Landoll factory for b. Then tighten the front nut compressing the repairs. Inspect the deck daily for broken or miss- spring to approximately 10-3/8"...

  • Page 51: Hydraulic System

    IMPORTANT WARNING TO CHECK THE TENSION ON THE LATCH, PLACE A PRY BAR BETWEEN THE FIFTH 1. TOO MUCH TENSION WILL CAUSE WHEEL PLATE AND THE BACKING PLATE EXCESSIVE WEAR ON THE RELEASE AND PRY DOWN UNTIL THE LATCH RE- AND POSSIBLY BEND THE LATCH LEASES.
  • Page 52 7-WAY RECEPTACLE FRONT OF CLEARANCE CLEARANCE TRAILER FRONT FRONT LEFT RIGHT MARKER MARKER FRONT FRONT LEFT RIGHT CONTROL ENGINE PANEL PANEL WORK LIGHT LIGHT LIGHTS TO REMOTE (SEE NEXT PAGE) DS23 DS24 DS25 DS26 LIGHT SWITCH MARKER MARKER SLOPE RIGHT SLOPE LEFT MARKER MARKER...
  • Page 53 600c remote control schematic Figure 4-6 Remote Wiring Diagram 4-11...
  • Page 54 600C SERIES WIRING PARTS LIST 600C SERIES WIRING PARTS LIST REF. FUNCTION REF. FUNCTION DES. DES. FRONT LEFT CLEARANCE, YELLOW DS27 ABS MALFUNCTION INDICATOR, YELLOW FRONT RIGHT CLEARANCE, YELLOW 7 WAY RECEPTACLE FRONT LEFT MARKER, YELLOW FRONT MAIN CONNECTOR FRONT RIGHT MARKER, YELLOW...

  • Page 55: Electrical System

    4-5 ELECTRICAL SYSTEM 4-5.4 Fuse or circuit breaker burn-out or 4-5.1 Maintenance of the electrical system blow-out usually indicates electrical consists of inspection and minor servicing. short-circuit, although a fuse can occasion- Any wire, connection or electrical component ally fail from vibration. Insert a second fuse showing signs of corrosion, wear, breakage or reset the breaker.
  • Page 56 Figure 4-7 Tandem Axle Air Ride Suspension System Figure 4-8 Air Ride Height Adjustment 4-14...
  • Page 57 Check the ride height to make sure it is cor- “up” position. rect. Consult Landoll Service Center if correct h. Move control arms to “down” position, com- height cannot be obtained.
  • Page 58 Figure 4-9 Triple Axle Air Ride Suspension System 4-16...

  • Page 59: Alignment

    4-7 ALIGNMENT 4-7.1 Wheel Alignment When trailer tires show signs of scuffing, feather-edging or uneven wear, examine the trailer DANGER for damaged suspension (frame, shocks, linkage, etc.), axle, wheel bearings and wheels. Proper wheel alignment and wheel bearing adjustment is TO PREVENT A LIFE THREATENING essential for proper tire wear.
  • Page 60 4-7.2 b. Air Ride Suspension Axles Axle Alignment Proper axle to king pin alignment is necessary The air ride suspension is aligned and ad- to obtain straight tracking. If axle alignment is off, justed at the factory and it should not be necessary “dog-tracking”...
  • Page 61 Figure 4-11 Checking Axle Alignment Figure 4-12 Examples of Camber 4-19...

  • Page 62: Brake System Maintenance

    4-8 BRAKE SYSTEM MAINTENANCE WARNING 4-8.2 Spring Air Brake Chambers Check for faulty units. Check the condensation 1. WHEN CRAWLING UNDER THE holes on the underside of the brake chambers to make sure they are open. The spring brake has SEMITRAILER IS NECESSARY, CHOCK two brake chambers, a service chamber and an ALL WHEELS OF THE TRAILER AND...
  • Page 63 (See Table 4-2). WARNING REPAIR OR REPLACEMENT OF THE RELAY/EMERGENCY VALVE IS A COM- PLEX OPERATION AND SHOULD BE PERFORMED BY TRAINED SERVICE PERSONNEL. CONTACT A LANDOLL AUTHORIZED SERVICE CENTER OR THE LANDOLL FACTORY FOR SERVIC- ING. 4-21...
  • Page 64 Figure 4-14 Brake Lining Wear 4-8.4 Brake Assembly Maintenance 10. Remove camshaft bushings and seals from The brake assemblies should be inspected and spider. adjusted per interval described in Table 4-2. Ex- 11. After removing the shoes, completely amine the brake linings visually to locate the lining inspect all brake components, servicing showing the greatest amount of wear.
  • Page 65 Figure 4-15 Axle and Brake Assembly 4-23...
  • Page 66 d. Disassembly for 16-1/2" x 7" Brakes (See e. Reassembly for 16-1/2 x 7" Brakes (See Figure 4-15). Figure 4-15). 1. Release brakes and back off slack 1. Install new anchor pin bushings, camshaft adjuster. bushing and camshaft seals into the spider. 2.
  • Page 67 Figure 4-16 Slack Adjuster 4-8.5 4. Make a full service brake application. On Automatic Slack Adjuster The semitrailer automatic slack adjusters pro- release, allow sufficient time for brake to vide the means for routine brake adjustment to fully retract. During the brake release, compensate for lining wear.
  • Page 68 7. Observe the guide pointer arrow: WARNING If the guide pointer is above the clevis pointer, adjust clevis CCW for alignment. IF THE ADJUSTER APPEARS NOT TO If the guide pointer is below the clevis BE OPERATING, CHECK THE OTHER pointer, adjust clevis CW for alignment.

  • Page 69: Hub And Drum Maintenance

    4-9 HUB AND DRUM MAINTENANCE WARNING WARNING FAILURE TO REPLACE FAULTY TURNING A BRAKE DRUM BEYOND BRAKE DRUMS WILL RESULT IN AN 0.040 INCHES UNDER THE MAXIMUM UNRELIABLE BRAKING SYSTEM, AND DIAMETER WILL RESULT I N A MAY LEAD TO AN ACCIDENT. WEAKER BRAKE DRUM AND MAY RE- SULT IN AN ACCIDENT.
  • Page 70 4-9.5 Replace the hub and drum as follows Place the drum over the hub and brake (See Figure 4-17): shoes being careful not to damage the threads on the studs (See Figure 4-17). a. Remove the brake drum (See Figure 4-17). Make sure the drum seats flat against the hub It may be necessary to release the slack ad- flange and mates properly with the hub pilot.

  • Page 71: Wheel Bearing Lubrication And Adjustment

    Place the hub or wheel over the axle spindle n. Install and adjust bearings (See Section being careful to align the hub bore with the 4-10, Wheel Bearing Lubrication and Ad- axle. Do not damage the seal. Support the justment). hub assembly until the outer bearing cone Install the hub cap with the proper gasket.

  • Page 72: Tire Maintenance

    Figure 4-18 Tire Inflation Examples 4-11 TIRE MAINTENANCE 4-11.1 4-11.2 Tire Inflation. Tire inflation will cause Tire Matching. Both tires on the same tire to ground contact characteristics as spindle must be the same size in order to shown in Figure 4-18. Tire inflation should properly distribute the load and braking forces between them.
  • Page 73 WHEEL SEPARATOR PLATE (LOCATED BETWEEN STEEL AND ALUMINUM) BRAKE DRUM HUB CAP GASKET INNER TIRE AND WHEEL OUTER TIRE AND WHEEL FLANGE NUT LOCK WASHER tiremount CAPSCREW Figure 4-21 Mounting Tires and Wheels 4-11.3 Mounting Tire and Wheel a. Make sure that all mounting surfaces are clean and free of rust, dirt or paint.

  • Page 74: Winches

    4-12 WINCHES WARNING Inspect the winch cable before and after every usage. If frayed wires, nicks, kinks, worn spots, breaks or any other sign of deterioration or dam- DO NOT HANDLE THE WINCH CABLE age is found, immediate replacement is mandatory WHEN THE WINCH IS IN THE ENGAGE before further usage.
  • Page 75 Figure 4-23 Dock Leveler Leg Assembly 4-33...

  • Page 76: Crank Landing Gear

    4-13.4 e. Remove four hex screws. Lift cylinder head Leg (See Figure 4-23) retainer. A wire or rubber band may be used a. To remove leg from trailer, disconnect the to hold to sprocket screwdriver, carefully re- hydraulic supply at the front of the trailer. move spiral retaining ring.
  • Page 77 Figure 4-24 Crank Landing Gear Assembly 4-35...
  • Page 78 4-14.4 Check for proper shimming. Proper shim- Leg Assembly ming achieved when the shafts turn freely a. Place thrust washer on top of elevating and there is no more than 1/16" gap between screw. Thrust bearing follows and must be the shims and the outer leg when shaft is assembled with cup of bearing up.

  • Page 79: Troubleshooting

    TROUBLESHOOTING Troubleshooting should be performed by a trained and competent technician. Landoll Corporation is not responsible for equipment that is improperly maintained. Contact an authorized Landoll Service cen- ter or the Landoll factory for servicing. 5-1 ELECTRICAL Most electrical system problems show up as a burned out light or fuse, or inoperative electrical component.
  • Page 80 5-2 TIRES - WHEELS - SUSPENSION Most tire, wheel, and suspension related problems are due to excessive loads, extreme conditions, and improper maintenance. Tire, wheel, and suspension problems can be easily detected and solved by checking the following guide. For maintenance procedures, see Sections 4-4, 4-6, 4-7, 4-9, 4-10, 4-11. SYMPTOM PROBLEM: REMEDY VIBRATIONS WHILE DRIVING...
  • Page 81 TIRES - WHEELS - SUSPENSION (CONTINUED) SYMPTOMS PROBLEM: REMEDY RIM FAILURE*: CRACKING Overinflated tires: deflate tire to proper PSI. High speeds: adjust speed according to road and load condi- tions. High speed cornering: adjust cornering practices. Over loading: check rim load rating. *IN ALL INSTANCES OF RIM FAILURE, REPLACE THE RIM IMMEDIATELY! BENDING OR WARPING Curb-hopping or potholes: adjust turning practices and adjust...
  • Page 82 5-3 BRAKES For maintenance procedures, see Section 4-8. SYMPTOM PROBLEM: REMEDY NO BRAKES OR BRAKES Brake air system improperly connected: reconnect hand ARE INTERMITTENT valves properly. Relay/Emergency valve plugged: clean valve. Defective tractor protection valve: repair or replace. Restricted tubing or hose line: locate and eliminate restric- tion.
  • Page 83 BRAKES (CONTINUED) SYMPTOM PROBLEM: REMEDY ALL BRAKES DO NOT RELEASE Air system improperly connected to 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 restriction and remove.
  • Page 84 BRAKES (CONTINUED) SYMPTOM PROBLEM: REMEDY BRAKES WILL NOT APPLY Initial air pressure too low: allow air system to build up to WHEN EMERGENCY LINE IS minimum 90 PSI and stabilize. DISCONNECTED Defective relay valve: repair or replace valve. Air line leak: locate leak and repair. Brake chamber leak: locate leak and repair or replace.
  • Page 85 5-5 HYDRAULIC SYSTEM Most hydraulic system failures follow the same pattern: a gradual or sudden loss of pressure or flow with a resulting loss of cylinder or motor power. Any one of the system’s components may be at fault. By following step-by-step procedures, the trouble can be located in a short time. For maintenance pro- cedures, see Section 4-4.
  • Page 86 HYDRAULIC SYSTEM (CONTINUED) SYMPTOM PROBLEM: REMEDY SYSTEM OPERATES TOO FAST Wrong size or incorrectly adjusted restrictor: replace or adjust as necessary. Engine running too fast: reduce engine speed. OVER HEATING OF Oil passing through relief valve for excessive time: return OIL IN SYSTEM control valve to neutral when not in use.
  • Page 87 5-6 HYDRAULIC POWER SUPPLY ENGINE PACKAGE To troubleshoot the engine in the hydraulic engine package, please refer to the owners manual that was provided with the engine package. 5-7 REMOTE CONTROL SYMPTOM PROBLEM: REMEDY DOES NOT FUNCTION No power: Check center pin of 7-way connector with voltmeter (+12VDC).
  • Page 88 NOTES: 5-10...

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