Crankshaft Pulley - Modified Bolt

TO: OUR MERCEDES-BENZ PASSENGER CAR DEALERS

DATE: January 1994

REF.NO. 03/48

SUBJECT:
Engines 601, 602, 603
Modified Front Crankshaft Pulley Bolt

Figure 1:

As of May 1992 production, the front crankshaft bolt (2, Figure 1) has been modified. The bolt tensile strength rating has been changed from DIN 10.9 to 8.8. Additionally, the three belleville washers have been replaced by a flat washer (3, Figure 1).

Tightening torque: Preload bolt: 200 Nm
Torque angle: 90°

CAUTION!
The 2 versions of bolts and washers are not interchangeable (i.e. the modified bolt can not be used with the belleville washers, and vice-versa).




Effective Serial Number And Parts Information