Landoll 600B Series Operator's Manual
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Landoll 600B Series Operator's Manual

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MODEL 600B SERIES
SEMITRAILER
OPERATOR'S MANUAL
1900 North Street
Marysville, KS 66508
(785)562-5381
F-320-0103
01/03

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  • Page 1 MODEL 600B SERIES SEMITRAILER OPERATOR’S MANUAL 1900 North Street Marysville, KS 66508 (785)562-5381 F-320-0103 01/03...
  • Page 2 Trailer subject to work or repair within the time period and manner set forth herein. This exclusive remedy shall not be deemed to have failed of its essential purpose so long as Landoll Corporation is willing and able to repair or replace defective parts in the pre-...
  • Page 3 MODEL 600B 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 .
  • 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. 10/97) 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 LUBRICATION (AS RECEIVED CONDITION) THEY DO NOT APPLY IF SPECIAL GRAPHITE MOLY-DISULFIDE OR OTHER EXTREME PRESSURE LUBRICANTS ARE USED.

  • 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 Electrical 3-1.6 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 LANDING GEAR lever is located on the left side of the Engine Control Panel. It has three positions: FAILURE TO PROPERLY SET AND RETRACT In this position, the landing gear are C H E C K PA RKIN G B RAKE , A N D pulled up off the ground.
  • Page 18 Figure 3-4 Hydraulic Controls...

  • Page 19: Towing The Semitrailer

    3-5.6 Check tire inflation, adjust as needed to 3-5.8 Check the oil in each hub for proper the pressure listed on the semitrailer VIN level and freedom from contamination. If plate, located on the front of the semitrailer. hubs are contaminated with water, dirt or 3-5.7 Check tractor/semitrailer rig for air leaks.

  • 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- tions in Section 3-7. For hydraulic landing gear, extend landing 3-8.2 Lower the landing gear: gear with lever on Engine Control Panel until WARNING the full weight of the trailer is on the landing gear.

  • Page 22: Axle Control Lever

    3-10 AXLE CONTROL LEVER The AXLE CONTROL lever (See Figure 3-4) LOAD In this position, the undercarriage is located on the control panel. It is the top lever slides forward for loading. with three positions: CENTER This is the neutral position. 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 CAUTION DANGER TILTING THE SEMITRAILER DECK 1. DO NOT GO NEAR UNDERCAR- WILL INCREASE TENSION ON THE RIAGE WHEN CAM ROLLERS ARE WINCH CABLE, WHICH CAN CAUSE P A R TI A L LY O UT O F PO CK E T S. THE LOAD TO BE PULLED FORWARD.
  • Page 25 CAUTION CAUTION IN LOADING OR UNLOADING POSI- TANDEM AXLE SEMITRAILER MAXI- T IO N , T H E AP P RO ACH P LA TE MUM CONCENTRATED LOAD IN A S H O U L D B E RE ST ING O N T H E 10FT.
  • 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 IMPORTANT 3-14.11 Before returning the semitrailer to 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 (OPTIONAL) The WORK LIGHT SWITCH is on the hydraulic control panel. It illuminates the hydraulic control panel and controls the optional work lights mounted on the bulkhead. The work lights illumi- nate the upper deck. 3-16 WINCH CONTROLS DANGER WARNING 1.
  • Page 30 3-16.2 The WINCH CLUTCH HANDLE (See DISENGAGE When the handle is placed is this po- 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 1. To adjust, turn the regulator adjusting WINCH CONTROL has two positions. knob. Clockwise rotation increases and RELEASE In this position, the winch is disen- counterclockwise rotation decreases outlet gaged and air tension (if present) is pressure and tension.
  • 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 DO NOT CRANK ENGINE FOR MORE on the driver’s side of the semitrailer. The 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 610B triple axle semitrailer, CAUTION with 10’-1" spread between front and rear ax- les is equipped with additional height control INSURE SUSPENSION AIR BAGS ARE valves to adjust the suspension during load- 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)

    Figure 3-13 Examples of Remote Control Options 3-21 REMOTE CONTROL (OPTION) 3-21.1 The wired remote control plugs into an electrical receptacle usually located on the 3-21.5 The triple function wired remote oper- hydraulic control panel. Optional receptacle ates the winch in/out, tilt, and either the axle locations are on the rear street side or both or winch tension.
  • 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 and pact Protection, requires all 600 Series trailers energy absorption requirements for the guard. A manufactured after January 26, 1998 shall be DOT decal certifies that the guard meets FMVSS equipped with a rear impact guard certified by the No.

  • Page 40: Cold Weather Operation

    CAUTION CAUTION THE AUXILIARY (BLUE) CIRCUIT IS IF A FAULT EXISTS IN THE SEMI- FOR POWERING THE SEMITRAILER TRAILER ABS, NORMAL BRAKING ABS. THIS CIRCUIT MUST BE HOT WILL OCCUR, BUT WHEELS MAY WHEN THE TRACTOR KEY SWITCH IS LOCK. SERVICE THE ABS AS SOON ON.

  • Page 41: Maintenance And Lubrication

    MAINTENANCE AND LUBRICATION This section contains instructions necessary for proper maintenance of the semitrailer. The 600B 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 42 Figure 4-1 Lubrication Points...

  • Page 43: Maintenance Procedures

    LUBE SEASON BRAND AND PRODUCT (WEIGHT AND/OR TYPE) AMOCO EXXON PHILLIPS TEXACO Table 4-1 Lubrication Specifications 4-2 MAINTENANCE PROCEDURES 4-2.1 Repair Parts 4-2.4 Cleaning Repair parts are illustrated and listed in a a. Wash semitrailer to remove all accumulated separate parts manual. Replacement of parts due dirt and grime.
  • Page 44 NORMAL OPERATING SERVICE INTERVALS SERVICE TIMES 1st 5 Weekly Monthly Yearly INTERVAL : Months ITEM MILES 2,000 12,000 25,000 I, T C,I,L I, C I, T I, L I, T I, T I, T (Inspect & Replace as needed) I – Inspect, R – Replace, T– Tighten/ Adjust Torque, L – Lubricate, C – Clean NOTES: a.
  • Page 45 ENGINE MAINTENANCE SCHEDULE OPERATION AFTER EACH CYCLE OF INDICATED HOURS NOTE: *PERFORM THESE MAINTENANCE PROCEDURES MORE FREQUANTLY UNDER EXTREMELY DUSTY, DIRTY CONDITIONS. WARNING BREATHING EXHAUST GASES CAN RESULT IN SEVERE PERSONAL INJURY OR DEATH. DO NOT USE AIR CLEANER, EXHAUST ELBOW, OR CONNECTING PARTS AS A SUPPORTING STEP.

  • Page 46: Gooseneck, Frame, And Deck

    If any cracks or latch (See Figure 4-2). 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 47: 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 48 Figure 4-3 600B Wiring Diagram...
  • Page 49 Figure 4-4 Remote Wiring Diagram...
  • Page 50 600B SERIES WIRING PARTS LIST 600B SERIES WIRING PARTS LIST REF. FUNCTION REF. FUNCTION DES. DES. FRONT LEFT CLEARANCE, YELLOW REMOTE, FRONT FRONT RIGHT CLEARANCE, YELLOW REMOTE, STREET REAR FRONT LEFT MARKER, YELLOW REMOTE, CURB REAR FRONT RIGHT MARKER, YELLOW...

  • Page 51: Electrical System

    If the bushings springs on triple axle suspension. need to be replaced contact a Landoll author- 4-6.3 Tandem Axle Air Ride Height Adjust- ized service center or the Landoll factory for ment.
  • Page 52 Figure 4-5 Tandem Axle Air Ride Suspension System Figure 4-6 Air Ride Height Adjustment 4-12...
  • Page 53 Check the ride height to make sure it is cor- bracket and pushing the control arm to an rect. Consult Landoll Service Center if correct “up” position. height cannot be obtained. h. Move control arms to “down” position, com- f.
  • Page 54 Figure 4-7 Triple Axle Air Ride Suspension System 4-14...

  • Page 55: Alignment

    Figure 4-8 Checking Axle for Bend 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 56 4-7.2 Axle Alignment b. Air Ride Suspension Axles 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 57 Figure 4-9 Checking Axle Alignment Figure 4-10 Examples of Camber 4-17...

  • Page 58: Brake System Maintenance

    c. Spring Suspension Axles 3. Tighten the axle U-bolts to the torques listed in the above table. SPRING SUSPENSION TORQUE CHART 4. Tighten the front axle torque arm clamp 1" 7/8" 7/8" U- 1/2" bolts to the torque listed in the above table. bolt 5.
  • Page 59 4-8.2 Spring Air Brake Chambers b. Removal Check for faulty units. Check the condensation 1. Chock all tractor and trailer wheels and holes on the underside of the brake chambers to drain the air system. make sure they are open. The spring brake has 2.
  • Page 60 Brakes should not PERSONNEL. CONTACT A LANDOLL be adjusted manually except when relining brakes. AUTHORIZED SERVICE CENTER OR b. Disassembly for 12-1/4" X 7-1/2" Brakes THE LANDOLL FACTORY FOR SERVIC- (See Figure 4-13) ING. 1. Release brakes and back off slack adjuster.
  • Page 61 Figure 4-13 Axle and Brake Assembly 4-21...
  • Page 62 c. Reassembly for 12-1/4" X 7-1/2" Brakes 6. Lift out the shoe retractor spring, which is (See Figure 4-13) now free of tension. 1. Install new camshaft bushing and seals 7. Swing the lower shoe back approximately into the spider. to relieve the tension on the shoe keeper springs.
  • Page 63 WARNING THE INSTALLATION GUIDE MUST BE USED WHEN INSTALLING OR REIN- STALLING AUTOMATIC SLACK AD- JUSTER. FAILURE TO DO SO MAY RE- SULT IN IMPROPERLY ADJUSTED BRAKES WHICH MAY CAUSE BRAKE DAMAGE OR LEAD TO BRAKE FAIL- URE. a. Operational Check (See Figure 4-14) 1.
  • Page 64 3. Remove the existing slack adjuster and 13. If the push rod is not fully engaged in clevis - DO NOT REMOVE EXISTING JAM clevis body, install a new push rod - cut to NUT. length. 4. Install the new clevis (with 1/2" pin) onto 14.

  • Page 65: Hub And Drum Maintenance

    4-9 HUB AND DRUM MAINTENANCE WARNING WARNING F A I LU R E TO R EP LA CE FAU LT Y TURNING A BRAKE DRUM BEYOND BRAKE DRUMS WILL RESULT IN AN 0.040 INCHES UNDER THE MAXIMUM UNRELIABLE BRAKING SYSTEM, AND D I A M E TE R W I LL R E S U L T I N A MAY LEAD TO AN ACCIDENT.
  • Page 66 Figure 4-15 Outboard Mount Hub and Drum h. Clean the mounting surfaces with a good WARNING grade commercial cleaner and soft rag. Dry all component parts with a clean, absorbent cloth or paper. Lubricant will not adhere to FAILURE TO USE THE CORRECT surfaces wet with solvent.

  • Page 67: Wheel Bearing Lubrication And Adjustment

    4-10 WHEEL BEARING LUBRICATION AND ADJUSTMENT h. Loosen the inner adjustment nut 1/3 turn. With semitrailer sitting level, the oil level must Install the spindle nut lock washer so that be checked daily and maintained between the the dowel on the inner nut will align with a “ADD”...

  • Page 68: Tire Maintenance

    Figure 4-16 Tire Inflation Examples 4-11 TIRE MAINTENANCE 4-11.1 Tire Inflation. Tire inflation will cause 4-11.2 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 4-16. Tire inflation should properly distribute the load and braking forces be checked daily while the tire is cold, and between them.
  • Page 69 Figure 4-19 Mounting Tires and Wheels 4-11.3 Mounting Tire and Wheel c. Position the outer disc wheel being careful not to damage the threads. Be sure the valve a. Make sure that all mounting surfaces are stems for both the inner and outer tire are ac- clean and free of rust, dirt or paint.

  • Page 70: Winches

    4-12 WINCHES Inspect the winch cable before and after every usage. If frayed wires, nicks, kinks, worn spots, WARNING breaks or any other sign of deterioration or dam- age is found, immediate replacement is mandatory before further usage. If the semitrailer is going to DO NOT HANDLE THE WINCH CABLE be out in the weather for any length of time, it is WHEN THE WINCH IS IN THE ENGAGE...
  • Page 71 Figure 4-21 Dock Leveler Leg Assembly 4-31...

  • Page 72: Crank Landing Gear

    4-13.4 Leg (See Figure 4-21) e. Remove four hex screws. Lift cylinder head 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 73 Figure 4-22 Crank Landing Gear Assembly 4-33...
  • Page 74 Lift out polyethylene bushing. Check for proper shimming. Proper shim- ming achieved when the shafts turn freely Remove thrust bearing, thrust washer, and and there is no more than 1/16" gap between woodruff key from screw in assembly. the shims and the outer leg when shaft is k.

  • Page 75: 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 76 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 77 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 78 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 79 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 80 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 81 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 82 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 83 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 84 NOTES: 5-10...

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