Multiquip manual MVH-406DSY-TROUBLESHOOTING, Engine Troubleshooting

MVH-406DSY—TROUBLESHOOTING

Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, please take a remedial action following the

diagnosis based on the Engine Troubleshooting (Table 8) information shown below.If the problem cannot be remedied, please leave the unit just as it is and consult our company's business office or service plant.

TABLE 8. ENGINE TROUBLESHOOTING

SYMPTON	POSSIBLE PROBLEM	SOLUTION
	Speed control lever is in "STOP" position?	Set speed control lever to "START" position.
	No fuel reaching injection pump?	Add fuel. Check entire fuel system.
	Defective fuel pump?	Replace fuel pump.
	Fuel filter clogged?	Replace fuel filter and clean tank.
Engine will not start or start is	Faulty fuel supply line?	Replace or repair fuel line.
delayed, although engine can	Compression too low?	Check piston, cylinder and valves. Adjust or
be turned over.		repair per engine repair manual.
	Fuel injector not working correctly?	Repair or replace injector in accordance with
		engine repair manual.
	Oil pressure too low?	Check engine oil pressure.
	Low starting temperature limit exceeded	Comply with cold starting instructions and
		proper oil viscosity.
		Check whether clear (not turbid) fuel emerges
		from the fuel line (detach from injection
	Fuel separates has inadequate resistance to	pump). If the fuel is turbid or separated, warm
At low temperatures engine will	low temperatures?	up the engine or drain the complete fuel
not start.		supply system. Refuel with winter grade diesel
		fuel.
	Engine oil too thick?	Refill engine crankcase with correct type of oil
		for winter environment.
	Throttle lever in STOP position?	Reposition throttle lever to RUN position.
Engine fires but stops soon as
	Fuel filter blocked?	Replace fuel filter.
starter is switched off.
	Fuel supply blocked?	Check the entire fuel system.
Engine stops by itself during	Fuel tank empty?	Add fuel.
normal operation.	Fuel filter blocked?	Replace fuel filter.
	Fuel tank empty?	Fill with No.2 diesel fuel.
	Fuel filter clogged?	Replace fuel filter.
Low engine power, output and	Fuel tank venting is inadequate?	Ensure that tank is adequately vented.
speed.
	Speed control lever does not remain in	See engine manual for corrective action.
	selected position?
	Engine oil level too full?	Correct engine oil level?
Low engine power output and	Air filter blocked?	Clean or replace air filter.
	Incorrect valve clearances?	Adjust valves per engine specification.
low speed, black exhaust
smoke.
	Malfunction at injector?	See engine manual.

PAGE 26 — MVH-406DSY PLATE COMPACTOR — OPERATION AND PARTS MANUAL — REV. #1 (08/13/07)