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6. Air enters into oil supply
system or blocked.
7. Deficient oil supply.
8. Bad atomization of fuel
injector.
9. Speed regulator malfunctions.
10. Engine is overheated.
11. Too much carbon deposition
in engine.
12. Gas exhaust piping is
blocked.
Process according to items a and
b of Section 1 of this chapter
Check injection pump plunger
and delivery valve seat
Check, clean and adjust pressure
Check speed regulator and adjust
accordingly.
Check cooling system and
eliminate scale deposit.
Eliminate carbon deposition.
Remove stemming.
1.4 Abnormal
sound sent by diesel
engine when
running
1. Gas cylinder sends rhythmical
and silvery sound of beating
metal because of earlier oil
injection.
2. Gas cylinder sends grave and
non-silvery sound because of too
late oil injection.
3. Gas cylinder sends impact
sound after starting the diesel
engine because of too big
clearance between piston and gas
cylinder, this sound is decreased
with diesel engine running
warm.
4. Sound is low and sharp, it is
more obvious especially when
idling, as a result of too much
clearance between piston pin and
pinhole
5. Sound of collision of parts of
machine can be heard when
rotation rate of engine suddenly
decreased, heavy and forceful
especially at low speed, as a
result of too much clearance
between main bearing and crank
shaft
6. Sound of collision when crank
shaft moves back and forth can
be heard as a result of too much
Adjust advance angle of fuel
supply.
Adjust advance angle of fuel
supply.
Replace piston or cylinder
sleeve.
Replace parts to ensure the
specified clearance.
Replace parts to ensure the
specified clearance.
Replace push jack to ensure the
specified clearance
Replace parts, check and adjust
valve clearance.
Содержание PY180H
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