Driveshaft - Repair Hints and Modifications

83mercedes02

TO: OUR MERCEDES-BENZ PASSENGER CAR DEALERS


DATE: April, 1983 REF.. NO. 41/9


SUBJECT: MODIFICATIONS TO THE DRIVESHAFT - CHASSIS 107,123 AND 126
A. Intermediate Bearing with Pressed-on Protective Cap
B. Identification of Front and Rear Shaft
C. Repair Hints

FIGURE 1 - PREVIOUS VERSION:

FIGURE 2 - MODIFIED VERSION:

A. Intermediate Bearing with Pressed-On Protective Cap

Since August 1982, the protective cap (6, Figure 2) is pressed on the driveshaft securing the intermediate bearing, eliminating the need for a snap ring (5, Figure 1).

FIGURE 3 - ASSEMBLY MARKS:

B. Identification of Front and Rear Shaft

The front and rear driveshafts are marked for assembly (arrows, Figure 3). There is a small protrusion on the front shaft and two arrows on the yoke of the joint. The protrusion on the front shaft should be aligned between the two arrows on the yoke.
NOTE: Prior to August 1982, the assembly marks were present on some driveshafts, but were not used for alignment purposes when joining the shafts. Before removing these shafts, mark the yoke and shaft with alignment marks using a marking stick or paint. This will insure proper alignment of the components when the driveshaft is reassembled.

CAUTION: Misaligned shafts will cause the U-joint to be out of phase and an unbalanced driveline.
C. Repair Hints

The following must be observed when performing repair work on the driveshaft intermediate bearing or radial ball bearing:

1. Observe or apply marks (see NOTE, section B) before disassembling the front and rear driveshafts.

2. The protective cap and intermediate bearing should be removed together, using a two-arm type Puller (Special Tool No. 000 589 88 33 00).

FIGURE 4 INSTALLATION SLEEVE (SELF-MADE):

FIGURE 5 - PROTECTIVE CAP AND RADIAL BALL BEARING:

3. Install the protective cap with a self-made installation sleeve (Figure 4). Be sure that the protective cap fits properly on the radial ball bearing (Figure 5).
IMPORTANT: The pressed-on protective cap should only be used once.

4. The previous version protective cap with locking ring must be retained for repair purposes. The two protective cap versions are not interchangeable.


Parts Information


Part Name Part Number


Protective cap 123 411 00 96
(pressed-on version)


Special Tools


Tool Name Tool Number Group/Category Dealer Net Price*


Puller (2-arm type) 000 589 88 33 00 41/C $32.78


*Price subject to change