Engine - Oil Leaks At Back Of Engine Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948)

2010 Engine - Oil Leaks At Back Of Engine Mercedes Benz C 300 4MATIC (204.081) V6-3.0L (272.948)

Vehicle: All Technical Service Bulletins

Engine - Oil Leaks At Back Of Engine

Camshaft caps leaking: Oil loss at rear of engine

Topic number         LI01.30-P-048997

Version               4

Design group          01.30 Cylinder head

Date                  03-03-2010

Validity              All models with engine 272

All models with engine 273

Cleanpoint engine for cap A000 998 5690: Engine 273: 2739xx30268766 Engine 272: 2729xx31006851

Cleanpoint engine for cap A000 998 5590: Engine 273: 2739xx30264566 Engine 272: 2729xx30992044

Reason for change     Supersedes DTB S-B-01.30/23b

Reason for block

Complaint:

Oil loss at rear of engine.

Note:

In isolated cases oil loss can occur at the rear caps (cover plugs) of the camshafts.

Cause:

Cap sealing ring leaking.

(In the event of borderline tolerances and under unfavorable climatic conditions the sealing ring can lose the preload necessary to seal off the oil

gallery)

Remedy:

Replace cap.

Note:

Replace all 3 or both (on engines with mechanical vacuum pump) caps.

Part number:

A000 998 55 90 (cap, small)

A000 998 56 90 (cap, large)

Symptoms

Parts

Work units

Validity

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