Multiquip LT12D, LT12P Maintenance Trailers, Adjustable Channel, Wheel HUB Adjustment

Page 36

MAINTENANCE — TRAILERS

The following trailer maintenance guidelines are intended to assist the operator in preventive maintenance.

ADJUSTABLE CHANNEL

Your trailer may be equipped with an adjustable channel (Figure 23) that allows the coupler to be raised or lowered to a desired height. Periodically check the channel bolts for damage or loosening.

Figure 23. Adjustable Channel

Wheel Bearings

Wheel bearings must be inspected and lubricated once a year or 12,000 miles to insure safe operation of your trailer.

If trailer wheel bearings are immersed in water, they must be replaced.

DANGER

If trailer wheels are under water for a long period of time, wheel bearings may fail. If this is the case, service wheel bearings immediately.

The possibility exists of the wheels falling off causing equipment damage and severe bodily harm even death!

If the trailer has not been used for an extended amount of time, have the bearings inspected and packed more frequently, at least every six months and prior to use.

Follow the steps below to disassemble the wheel hub and service the wheel bearings. See Figure 24.

BEARING

WHEEL

HUB

OIL

 

 

 

SEAL

 

BEARING

COTTER

 

BEARING

CUP

PIN

 

BEARING

 

CUP

 

 

 

 

 

 

DUST

 

 

LUG

CAP

 

 

NUT

 

 

 

SPINDLE

 

 

 

WASHER

SPINDLE

 

 

 

 

 

 

NUT

Figure 24. Wheel Hub Components

After removing the dust cap, cotter pin, spindle nut and spindle washer, remove the hub to inspect the bearings for wear and damage.

Replace bearings that have flat spots on rollers, broken roller cages, rust or pitting. Always replace bearings and cups in sets. The inner and outer bearings are to be replaced at the same time.

Replace seals that have nicks, tears or wear.

Lubricate the bearings with a high quality EP-2 automotive wheel bearing grease.

WHEEL HUB ADJUSTMENT

Every time the wheel hub is removed and the bearings are reassembled, follow the steps below to check the wheel bearings for free running and adjust.

Turn the hub slowly, by hand, while tightening the spindle nut until you can no longer turn the hub by hand.

Loosen the spindle nut just until you are able to turn it (the spindle nut) by hand. Do not turn the hub while the spindle nut is loose.

Install a new cotter pin through the spindle nut and axle.

Check the adjustments. Both the hub and the spindle nut should be able to move freely (the spindle nut motion will be limited by the cotter pin).

PAGE 36 — LT12 SERIES LIGHT TOWER • OPERATION MANUAL — REV. #12 (01/20/09)

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Contents Models LT12D, LT12P This Manual Must Accompany the Equipment AT ALL TimesProposition 65 Warning Reporting Safety Defects NhtsaTable of Contents Specifications are subject to change without noticeSafety Information Safety MessagesGeneral Safety Light Tower Safetyfire extinguisher first aid kitLamp Safety Engine Safety Before servicing equipmentFuel Safety Towing SafetyTransporting Safety Loading and Tie-Down on Flatbed TruckElectrical Safety Power Cord/Cable SafetyGrounding Safety Battery Safety Environmental SafetyLamp Footcandle Plot Lamp Footcandle PlotSpecifications Generator SpecificationsTrailer Specifications Engine Specifications Dimensions DimensionsReference Letter Description Dimension Length Mast Stowed Position Length Mast Deployed PositionGeneral Information Components Major Components Control Panel SideRear Control Panel Light CONTROL/BREAKERControl Panel Indoor Installation InspectionBefore Starting Engine OIL CheckBattery Check Fuel CheckWipe up any spilled fuel immediately Cleaning the Radiator AIR Cleaner FAN Belt TensionCoolant Operation in Freezing WeatherLocation of Female Connectors Operation Starting the EngineStarting the Engine Perkins Starting the Engine Lombardini/Deutz EnginesMast Operation Outriggers and Support StandsDeploying the Mast to Vertical Position Raising the MastMast Operation Lowering the Mast Stowing the Mast to Horizontal PositionTurning on the Lamps Rotating the MastTesting the 120 VAC Gfci Receptacle Applying AN External LoadNormal Shutdown Emergency ShutdownMaintenance Basic Inspection and MaintenanceInspection/Maintenance FrequencyGeneral Inspection Flushing OUT Radiator and Changing CoolantChanging OIL Check Cable WearReplacing Fuel Filter Servicingthe Mast RAISE/LOWER Cable SystemStorage Removal from Long Term StorageLower the mast to the horizontal resting position Maintenance Trailers Adjustable ChannelWheel HUB Adjustment Leaf Suspension Leaf Suspension ComponentsTroubleshooting Generator TroubleshootingSymptom Solution Engine Troubleshooting Symptom Possible Cause SolutionEngine revolution is not Lamp Troubleshooting When switch is first Checking voltage and ballast Turned on Replacement minimizes color differencesClean fixture Lamp starts slowly ARC does not strike Defective Lamp?Lamp Troubleshooting Guide ConnectionsStarting Ballast RemovalLT12 Wiring Diagram S/N 902148 and below StatorBLK GRN WHT RED LT12 Wiring Diagram S/N 902149 to LT12 Wiring Diagram S/N 902149 to LT12 Wiring Diagram S/N 902626 and Above BLK BRN Blue RED WHT YEL GRN Perkins Engine Wiring Diagram Deutz Engine Wiring Diagram LT12 Control PANEL/IGNITION Wiring Diagram DEUTZ/LOMBARDINI SpecificTrailer Guidelines Common Causes for Loss of TrailerTrailer Towing Guidelines Driving Conditions Coupling to the TOW VehicleInoperable BRAKES, Lights or Mirrors Trailer Towing TipsTrailer VIN TAG Electrical Connector TOW VehicleSuspension System Side View MirrorsSafety Chains JackstandCoupler Types Ball Hitch CouplerLock washer and hitch frame Coupling theTrailer to theTow Vehicle Ball CouplerAttaching Safety Chain Connecting Trailer LightsUncoupling the Ball Hitch Pintle Hitch Coupler Pintle Coupler and Pintle HookTire Safety Unsafe Tires, Lug Nuts or WheelsCoupling Trailer to Tow Vehicle Pintle Coupler Determining Load Limit of Trailer StepTighten lug nuts before each tow Be sure lug nuts are tight before each towDetermining Load Limit of Tow Vehicle Step Tire FundamentalsP indicates the tire is for passenger vehicles Uniform Tire Quality Grading Standards Utqgs Table A. Speed RatingLetter Rating Speed Rating Tire Safety Tips Table B. Tire Wear TroubleshootingTire Repair Replacing Worn or Damaged TiresLights and Signals Wheel RimsWheels, Bearings and Lug Nuts Lug Nut Torque RequirementsFigure L. Trailer to Tow Vehicle Wiring Diagram HERE’S HOW to GET Help
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