Table of Contents
Advertisement
26
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,
doesn't flow.
if 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
in fuel system
loosened fuel line coupling, loose cap
nut, etc.
*
Loosen joint bolt stop fuel filter and air
vent screws of fuel injection pump to
eliminate all the air in the fuel system.
* Adjust valve clearance to 0.23 to 0.27
Valve clearance is
mm (0.009 to 0.011 in.) when the
not as specified.
engine is cold.
Leaking valves
* Grind valve.
*
Check injection timing
Fuel injection
*
The injection timing
timing is not as
0.105 rad (6)
specified.
before top dead center.
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,
pistons and liners cause insufficient
Low compression
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, contact your KUBOTA dealer.
Countermeasures
BWhen output is insufficient
Cause
*
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 insufficient.
* Check fuel system.
*
Check lubricating oil system.
*
Check to see if lubricating oil filter is
working properly.
*
Filter element deposited with impurities
would cause poor lubrication. Change
Overheating of
element.
moving parts
*
Check the clearance of bearing are
within factory specs.
*
Check injection timing.
*
Check timing
0.105 rad (6)
before top dead center.
Valve clearance
* Adjust to proper valve clearance of 0.23
is not as
to 0.27 mm (0.009 to 0.011 in.) with
specified.
engine cold.
Air cleaner is
* Clean the element every 100 hours of
dirty
operation.
[V3600-E3, V3600-T-E3, V3300-E3BG,
V3600-T-E3BG]
*
13.93 MPa(142 kgf/cm
Fuel injection
pressure is not
[V3800-DI-T-E3]
as specified.
*
Check injection pressure.
1st Stage 18.6 MPa(190 kgf/cm
2nd Stage 22.6 MPa(230 kgf/cm
*
Do not use poor quality fuel as it will
cause wear of the pump. Only use No.
2-D diesel fuel. (See "FUEL" in
Injection pump
"PERIODIC SERVICE" section.)
wear
*
Check the fuel injection pump element
and delivery valve assembly and
replace as necessary.
Countermeasures
2
; 2020 psi)
2
; 2702 psi)
2
; 3271 psi)
Hide quick links:
Advertisement
Table of Contents
