( 2) Fuel sprays
too
much
(3)
Injecting
time
is
too
late,
late burning
is
heavyp
(4) Valve lash is incorrect
or
valve seal is
not
good
(5)
Air filter choked
6. Insufficient oil pressure
Trouble cause and its feature
1. Oil pressure gauge is in trouble or
the
connecting pipe choked
2. Too little oil in
the
sump
3. Too thin oil
4. Oil
pump
driving and driven gear
worn
out
5. Strainer screen and oil filter
element
blocked
6.
Pressure limiting valve and pressure
regulating valve spring broken
7. Oil passage choked
or
oil leaks
8. Lash
between
the
bearings
too
large
7. Oil temperature
too
high
Trouble cause and its feature
1. Engine is over - loaded
2. oil is insufficient or overmuch
3. Piston ring leaks heavily
4.
Oil cooler choked inside,
dirt
• 68 •
(
2)
Adjust
the
fuel delivery
amount
of
the fuel injection
pump
(3
) Adjust
the
fuel delivery advance an-
gie
(4) Adjust
the
valve lash and seal, elimi-
nate
the
fault
(5)
Clean
the
filter
element
Remedy
1.
Replace
the
pressure gauge
or
dredge
the passage
2. Fill oil
to
the
stipulated level
3. Inspect oil grade, check
whether
the
oil be thinned
out
with
fuel
or
oil temper-
ature
too
high,
eliminate
it
4. Replace driveing and driven gear
5. Clean
or
replace
6. Inspect and replace
7. Checkand eliminate
8. Test
the
matching lash
Remedy
1.Adjust
the
load
2.
Add or reduce
the
oil according
the
stipulation
3. Replace piston ring
or
cylinder liner
4. Check and clean
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