2020 Mercedes Benz Truck ML 350 Technical Service Bulletin # LI01-30_P-048997 Date: 100303

2020 Mercedes Benz Truck ML 350 Technical Service Bulletin # LI01-30_P-048997 Date: 100303

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.

2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) Page 265

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

2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) Page 266