DV11
Operation and Maintenance
191
Maintenance of Major Components
Printed in Mar. 2005 PS-MMA0608-E1A
Operation Caution
Reason
Following items must be confirmed.
1) Oil pressure
At idling : 1.0 ~ 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.
During
operation
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 5min. 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.
Downloaded from
www.Manualslib.com
manuals search engine
