Generac Power Systems MAC MIH400HC, Руководство пользователя

Страница: 29 / 40

Owner’s Manual for Indirect Fired Heater 25
Troubleshooting
Excessive fuel consumption
Engine overloaded. Reduce engine load.
Restricted or dirty air cleaner.
Replace air cleaner element as
required.
Insufficient compression.
Determine cause of low compression
and repair as required.
Leaks in fuel supply system.
Locate source of leak and repair as
required.
Poor fuel quality or improper type of fuel.
Drain fuel and replace with proper
grade and quality of fuel for operating
condition.
Incorrect valve clearance.
Adjust valve clearance or contact a
GMP ASD.
Dirty or faulty fuel injectors.
Contact a GMP ASD.
Electronic fuel system problem.
Electronic control system or basic engine
problem.
Low engine temperature.
Remove and check thermostat.
Fuel in oil
Restricted fuel return line. Check and fix fuel return lines.
Insufficient engine load. Increase engine load.
Leaking fuel injectors. Contact a GMP ASD.
Low-pressure fuel system —
fuel pressure low
Restricted fuel filter. Replace fuel filter.
Restricted fuel line. Locate restriction, repair as required.
Faulty transfer pump. Contact a GMP ASD.
Faulty high-pressure fuel pump.
Remove fuel pump, repair/replace
pump as required.
Abnormal engine noise
Worn main or connecting rod bearings.
Contact a GMP ASD.
Excessive crankshaft end play.
Loose main bearing caps.
Worn connecting rod bushings and piston
pins.
Scored pistons.
Worn timing gears or excess backlash.
Excessive valve clearance.
Worn camshaft lobes.
Worn rocker arm shaft(s); worn or loose
rocker arms.
Worn valve guides.
Damaged valve retainers.
Bent pushrods or connecting rods.
Broken valve springs.
Worn or loose flywheel.
Excessive piston to liner clearance.
Excessive thrust bearing clearance.
Excessive oil viscosity.
Problem Cause Solution