mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

Timing Chain Knock Between Idle and 2000 Rpm|Page 2799 > < Timing Chain Knock Between Idle and 2000 Rpm|Page 2797
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Timing Chain Tensioner: Technical Service Bulletins
Camshaft Timing Adjuster - Revised Mounting Bolts

REF. NO.

MBNA 05/6a

TO:

OUR MERCEDES-BENZ PASSENGER CAR DEALERS

DATE:

September 1991

SUBJECT:

ENGINES 104.980/981 MOUNTING BOLTS FOR CAMSHAFT TIMING ADJUSTER

Note:

This Service Information includes revised Parts Information.

Figure 1

Figure 2

As of 5/91 and the effective serial numbers below, the mounting bolts (item 15a, Figures 1 and 2) for the camshaft timing adjuster have been modified.
Torx screw T30 is now used (item 15c [M7 x 13.5], Figures 1 and 2) instead of the previous hex. head screw (M7 x 11.6).

Effective Serial Number

Engine

Transmission

Engine End Number

104.980

Automatic

023614

104.981

Manual

001035

104.981

Automatic

010154

When performing repairs requiring the removal of the camshaft timing adjuster, use only the Torx screws (see table on page 2 for parts application).

Tightening Torque:

22 N-m

Parts Information

Part Name

Part Number

Camshaft timing adjuster 

Intake camshaft flange

Mounting holes "d"

Dimension "e"

(15a) Hex. head screw

104 990 03 22

With countersink

6.8 mm (1)

(M7 x 11.6)

(15b) Torx screw

104 990 05 04

Without countersink

6.8 mm (2)

T30 (M7 x 12.4)

Timing Chain Knock Between Idle and 2000 Rpm|Page 2799 > < Timing Chain Knock Between Idle and 2000 Rpm|Page 2797