DV11
Operation and Maintenance
192
Maintenance of Major Components
Printed in Mar. 2005 PS-MMA0608-E1A
3) Lubricating system
In the lubricating system, a care must be paid to the oil quality and oil element
replacement cycle. For the oil deterioration of turbocharger equipped engine,
needless to speak of engine assembly itself, influences badly to the turbocharger
too. Suggested engine oils for the turbocharger-mounted engine are as follows:
Recommended oil
Engine model
SAE no. API no.
DV11
SAE 10W40
ACEA-E5
(API CI-4)
5.3.6. Periodical servicing
Make it a rule to check the turbocharger assembly for condition and contamination
periodically.
1) Guide for checking the rotor for rotating condition
The inspection of the rotor assembly for rotating condition should be performed
by the degree of unusual sound. If a sound detecting bar is used, install its tip on
the turbocharger housing and increase the engine revolutions slowly. If a high-
pitch sound is heard continuously, it means that the rotor assembly is not normal.
In this case, as the metal bearing and rotor are likely to be in abnormal
conditions, the turbocharger should be replaced or repaired.
2) Guide for checking rotor end play
Disassemble the turbocharger from the engine, then check the rotor axial play
and radial play. When disassembling the turbocharger, be sure to plug the oil
inlet and outlet ports with taps, etc.
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