Engine Troubleshooting | Multiquip LT12P, LT12D guide

			TROUBLESHOOTING

		Table 10. Engine Troubleshooting

	Symptom	Possible Cause	Solution

		No fuel?	Replenish fuel.

		Air in the fuel system?	Bleed system.

		Water in the fuel system?	Remove water from fuel tank.

		Fuel pipe clogged?	Clean fuel pipe.
		Fuel ﬁlter clogged?	Clean or change fuel ﬁlter.

		Excessively high viscosity of fuel or engine	Use the speciﬁed fuel or engine oil.
		oil at low temperature?	Use the speciﬁed fuel or engine oil.
		oil at low temperature?

		Fuel with low cetane number?	Use the speciﬁed fuel.

		Fuel leak due to loose injection pipe	Tighten nut.
		retaining nut?	Tighten nut.
		retaining nut?

	Engine does not start.	Incorrect injection timing?	Adjust.
		Fuel cam shaft worn?	Replace.

		Injection nozzle clogged?	Clean injection nozzle.

		Injection pump malfunctioning?	Repair or replace.

		Seizure of crankshaft, camshaft, piston,	Repair or replace.
		cylinder liner or bearing?	Repair or replace.
		cylinder liner or bearing?
		Compression leak from cylinder?	Replace head gasket, tighten cylinder head
		Compression leak from cylinder?	bolt, glow plug and nozzle holder.
			bolt, glow plug and nozzle holder.

		Improper valve timing?	Correct or replace timing gear.

		Piston ring and liner worn?	Replace.

		Excessive valve clearance?	Adjust.

		Battery discharged?	Charge battery.

	Starter does not run.	Starter malfunctioning?	Repair or replace.

		Key switch malfunctioning?	Repair or replace.
		Key switch malfunctioning?	Repair or replace.

		Wiring disconnected?	Connect wiring.

LT12 SERIES LIGHT TOWER • OPERATION MANUAL — REV. #12 (01/20/09) — PAGE 39

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Multiquip LT12P, LT12D operation manual Engine Troubleshooting, Symptom Possible Cause Solution

Contents

This Manual Must Accompany the Equipment AT ALL Times Models LT12D, LT12P Proposition 65 Warning Nhtsa Reporting Safety Defects Speciﬁcations are subject to change without notice Table of Contents Safety Messages Safety Information ﬁrst aid kit General SafetyLight Tower Safety ﬁre extinguisher Lamp Safety Before servicing equipment Engine Safety Towing Safety Fuel Safety Loading and Tie-Down on Flatbed Truck Transporting Safety Electrical Safety Power Cord/Cable SafetyGrounding Safety Environmental Safety Battery Safety Lamp Footcandle Plot Lamp Footcandle Plot Specifications Generator SpeciﬁcationsTrailer Speciﬁcations Engine Speciﬁcations Length Mast Stowed Position Length Mast Deployed Position DimensionsDimensions Reference Letter Description Dimension General Information Major Components Control Panel Side Components Rear Light CONTROL/BREAKER Control Panel Control Panel Engine OIL Check Indoor InstallationInspection Before Starting Battery Check Fuel CheckWipe up any spilled fuel immediately Operation in Freezing Weather Cleaning the RadiatorAIR Cleaner FAN Belt Tension Coolant Location of Female Connectors Starting the Engine Lombardini/Deutz Engines OperationStarting the Engine Starting the Engine Perkins Raising the Mast Mast OperationOutriggers and Support Stands Deploying the Mast to Vertical Position Mast Operation Rotating the Mast Lowering the MastStowing the Mast to Horizontal Position Turning on the Lamps Emergency Shutdown Testing the 120 VAC Gfci ReceptacleApplying AN External Load Normal Shutdown Frequency MaintenanceBasic Inspection and Maintenance Inspection/Maintenance Flushing OUT Radiator and Changing Coolant General Inspection Check Cable Wear Changing OIL Servicingthe Mast RAISE/LOWER Cable System Replacing Fuel Filter Storage Removal from Long Term StorageLower the mast to the horizontal resting position Maintenance Trailers Adjustable ChannelWheel HUB Adjustment Leaf Suspension Components Leaf Suspension Troubleshooting Generator TroubleshootingSymptom Solution Symptom Possible Cause Solution Engine Troubleshooting Engine revolution is not Lamp Troubleshooting Lamp starts slowly ARC does not strike Defective Lamp? When switch is ﬁrst Checking voltage and ballast Turned onReplacement minimizes color differences Clean ﬁxture Ballast Removal Lamp Troubleshooting GuideConnections Starting Stator LT12 Wiring Diagram S/N 902148 and below BLK 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 DEUTZ/LOMBARDINI Specific LT12 Control PANEL/IGNITION Wiring Diagram Trailer Guidelines Common Causes for Loss of TrailerTrailer Towing Guidelines Coupling to the TOW Vehicle Driving Conditions Inoperable BRAKES, Lights or Mirrors Trailer Towing TipsTrailer VIN TAG Side View Mirrors Electrical ConnectorTOW Vehicle Suspension System Ball Hitch Coupler Safety ChainsJackstand Coupler Types Coupling theTrailer to theTow Vehicle Ball Coupler Lock washer and hitch frame Attaching Safety Chain Connecting Trailer LightsUncoupling the Ball Hitch Pintle Coupler and Pintle Hook Pintle Hitch Coupler Tire Safety Unsafe Tires, Lug Nuts or WheelsCoupling Trailer to Tow Vehicle Pintle Coupler Be sure lug nuts are tight before each tow Determining Load Limit of TrailerStep Tighten lug nuts before each tow Determining 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 Replacing Worn or Damaged Tires Tire Safety TipsTable B. Tire Wear Troubleshooting Tire Repair Lug Nut Torque Requirements Lights and SignalsWheel Rims Wheels, Bearings and Lug Nuts Figure L. Trailer to Tow Vehicle Wiring Diagram HERE’S HOW to GET Help