Timing Chain - Updated Replacement Parts

TO: OUR MERCEDES-BENZ PASSENGER CAR DEALERS

DATE: March 1990 (supersedes 05/77, Jan. '90)

REF.NO. 05/77a

Repair Instructions For Engines With Single Roller Timing Chain
Model 201 With Engine 102

Note:
Item 1. from the original issue has been deleted. Please discard your copy of S.I. 05/77.

Figure 1:

The timing chain housing cover for the single roller timing chain is no longer supplied as a spare part. As replacement the cover for the double roller timing chain must be used. In addition, the corresponding tensioning rail with a wider mounting hole (Fig. 1, L), as well as the wider slide rail must be installed.

Note:
The timing chain running over the timing chain sprockets produces a whining noise which can be heard at an engine speed up to 1800 rpm. Replacing the timing chain, tensioner or sprocket will not eliminate this noise.

Parts Information:

Parts Information

In Case of Warranty:

Damage Code
Depending upon diagnosis and origin of defect, select appropriate damage code from Damage Code Microfiche.