LGMG SR0818D, Руководство по обслуживанию, Страница: 34 / 54

Maintenance Manual of Rough Terrain
Mobile Elevating Work Platform
28
Engine Fault Table-KUBOTA
Fault Cause Measures
When it is difficult to start
the engine
Thick fuel hard to flow
Check the fuel tank and fuel filter.
Remove water, dust and other impurities.
Because all fuel will be filtered by the fuel
filter, if there is water or other foreign
matter in the fuel filter, please clean the
fuel filter with kerosene.
Air or water mixed in the fuel system
If there is air in the fuel filter or fuel
injection line, the fuel pump will not work
properly.
To obtain the correct fuel injection
pressure, check the machine carefully for
loose fuel pipe fittings, locking nuts, etc.
Remove all air from the fuel system by
loosening the connecting bolts of the fuel
injection pump and immobilizing the fuel
filter and the vent cock.
Incorrect valve clearance
When the engine cools down, adjust the
valve clearance.
Valve leakage Grind the valve.
Fuel injection timing error Check the fuel injection timing.
Thickened lubricating oil of the
machine in cold weather, resulting slow
engine start
Change the oil grade according to the
weather (temperature).
Insufficient compression
The valve is in poor condition or the ring,
piston and bushing are excessively worn,
leading to insufficient compression.
Replace them with new ones.
Depleted battery, resulting in engine
unable to start
Charge the battery.
In winter, remove the battery from the
machine, fully charge it and store it
indoors. When the battery is needed,
install it on the machine.
When output is
insufficient
Insufficient compression
Valve leaks.
The valve is in poor condition or the ring,
piston and bushing are excessively worn,
leading to insufficient compression.
Replace them with new ones.
Grind the valve.
Insufficient fuel Check the fuel system.
Moving parts overheat.
Check the lubricating oil system.
Check whether the lubricating oil filter
works properly.
Filter element with deposited impurities