Troubleshooting - Kubota V3300-E Operator's Manual

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TROUBLESHOOTING

TROUBLESHOOTING
If the engine does not function properly, use the following chart to identify and correct the cause.
BWhen it is difficult to start the engine
Cause
*Check the fuel tank and fuel filter.
*Remove water, dirt and other
impurities.
Fuel is thick and
*As all fuel will be filtered by the filter, if
doesn't flow.
there should be water or other foreign
matters on the filter, clean the filter
with kerosene.
*If air is in the fuel filter or injection lines,
the fuel pump will not work properly.
To attain proper fuel injection
Air or water mixed pressure, check carefully for loosened
in fuel system fuel line coupling, loose cap nut, etc.
*Loosen air vent plug of fuel filter and
air vent cock of fuel injection pump to
eliminate all the air in the fuel system.
*This is caused when water or dirt is
mixed in the fuel. Clean the nozzle
Thick carbon injection piece, being careful not to
deposits on orifice damage the orifice.
of injection nozzle. *Check to see if nozzle is working
properly or not. If not, install a new
nozzle.
Valve clearance is *Adjust valve clearance when the
not as specified. engine is cold.
Leaking valves *Grind valve.
Fuel injection
timing is not as *Check injection timing.
specified.
Engine oil
becomes thick in
*Change grade of oil according to the
cold weather and
weather (temperature.)
engine cranks
slow.
*Bad valve or excessive wear of rings,
Low compression pistons and liners cause insufficient
compression. Replace with new parts.
*Charge battery.
Battery is
*In winter, always remove battery from
discharged and the
machine, charge fully and keep
engine will not
indoors. Install in machine at time of
crank.
use.
A If the cause of trouble can not be found or if you can not adjust by yourself, contact your KUBOTA dealer.
Countermeasures
BWhen output is insufficient
Cause
*Clean orifice and needle valve, being
Carbon stuck very careful not to damage the nozzle
around orifice of orifice.
nozzle piece *Check nozzle to see if good. If not,
replace with new parts.
*Bad valve and excessive wear of rings,
Compression is
pistons and liners cause insufficient
insufficient.
compression. Replace with new parts.
Leaking valves
*Grind valves.
Fuel is
*Check fuel system.
insufficient.
*Check lubricating oil system.
*Check to see if lubricating oil filter is
working properly
*Filter element deposited with impurities
Overheating of
would cause poor lubrication. Change
moving parts
element.
*Check the clearance of bearing are
within factory specs.
*Check injection timing.
Valve clearance
*Adjust to proper valve clearance when
is not as
the engine is cold.
specified.
Air cleaner is *Clean the element every 100 hours of
dirty operation.
Fuel injection
pressure is not *Check injection pressure.
as specified.
*Do not use poor quality fuel as it will
cause wear of the pump. Only use
Injection pump No. 2-D diesel fuel.
wear *Check the fuel injection pump element
and delivery valve assembly and replace
as necessary.
Countermeasures