6. ENGINE ASSEMBLY AND OTHERS
Good
No good No good
x
0
0
Thin
0
Clogging
Dripping
Fig. 27
58
To continue trouble free engine operation over a long period of
time, the servicing items need a skilled maintenance technican,
therefore, consult your machine supply source on the following
items when necessary.
(1) Fuel Injection Nozzle
Use an injection nozzle tester to check the static injection
starting pressure and the fuel spray conditions.
Injection nozzle pressure test interval : Every 1500 operation
hours
When the injection starting pressure is too high or too low or
the fuel spray pattern is improper, an abnormal fuel combustion
take place in the engine leading a lowered output and blackish
exhaust smoke. Further, it causes a piston seizure or piston
damage etc. In such cases, the injection nozzle test or the nozzle
replacement is required.
Injection starting pressure . . . . . . . . 17.7 MPa
(2560 psi)
CAUTION:
While using a nozzle tester, it may happen that high
pressure blow off the fuel oil and injure the worker. Keep
off the nozzle end.
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