DL06K Interim Tire-4 Diesel Engine Maintenance of Major Components
186
Operation Caution Reason
During
operation
Following items must be confirmed.
1) Oil pressure
At idling : 1.5 ~ 3.0 kg/cm
2
At full load : 3.0 ~ 5.5 kg/cm
2
1) If the pressure is too low, abnormal
wear or stuck may be caused. Or if
too high, the oil leak may be generated.
2) When abnormal noises and vibration
are generated, slow down the
revolution and must stop it to
investigate the causes.
2) If the engine operation were continued
with abnormal noises and vibration,
it causes the engine trouble that
can not be repaired or some other
troubles.
At stop
1) At stopping the engine, perform
the idling operation for 5 min. and
then stop it.
1) After heavy load operation, if the
engine were stopped suddenly,
the heat would be conducted to
bearing parts from red hot turbine
wings that would result in burning
the oil to cause the stuck bearing
metal and revolving shaft.
5.3.5. Routine inspection and maintenance
Since the state of turbocharger depends largely on the state of engine maintenance, to
perform the specified up keep thoroughly is needed.
1) Air intake system
System the intake air system, care must be taken to the air cleaner. In case of oil
passing type air cleaner, if the oil level is lower than the specified value, the cleaning
efficiency get worse, if higher, the sucked oil pollutes a case. Particularly, for if the
rotor were polluted, the balance adjusted precisely would be deviated to cause a
vibration that may cause the stuck or abnormal wear by loading large force to the
bearing, the perfect air cleaner must always be used. In case of dry type filter,
according to the indication of a dust indicator, cleaning must be done to make the
intake air resistance as small as possible.
2) Exhaust system
In exhaust system, a care must be taken to the gas leak and the stuck prevention if
exhaust gas leaks from the exhaust pipe and turbocharger etc., for the super
charging effect will be lowered, the installed states of various parts must be paid with
careful attention. Since the parts that reach to high temperature during operation
such as the turbine room use the anti- heat nuts, a care must be paid not to mix with
the general nuts and at the same time, bolt stuck preventing paint should be coated
on the nut for the designated places.
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