Drive/Propeller Shaft - Modifications
REF. NO. 41/14To: OUR MERCEDES-BENZ PASSENGER CAR DEALERS
DATE: April 1989
SUBJECT:
A. MODIFIED CENTERING SLEEVE ON FRONT PROPELLER SHAFT
MODELS 124 AND 201
B. MODIFIED FLEX DISC ON FRONT PROPELLER SHAFT
MODEL 201.126
C. INSTALLING FLEX-RESISTANT DISC (80 MM BOLT CIRCLE)
MODELS 201.024 AND 201.126
A. Modified centering Sleeve on Front Propeller Shaft
Models 124 and 201
As of October 1988 production a composite material centering sleeve is installed on the front propeller shaft (X, Figure 1)
Effective Serial Number
The new centering sleeve may be installed in earlier production vehicles.
Dealer stock of the previous bronze centering sleeve is to be depleted on the rear propeller shaft.
Note:
1. On vehicles with manual transmission, only propeller shafts with the composite material centering sleeve, identifiable by a gray/black coloring, may be installed. The bronze centering sleeve, identifiable by its gold/yellow coloring should be removed from any propeller shaft in dealer stock.
2. When installing a composite material centering sleeve, the press-in dimension (a, Figure 1) from the face of the centering sleeve to the three-armed mounting flange, as listed in the table, is to be adhered to.
3. The composite material centering sleeve is packed with multipurpose grease when supplied as a replacement part. Multipurpose grease (NLGI class 2) is also to be used when repacking the centering sleeve. For bronze, and plastic centering sleeves, long-term lubricating grease (NLGI class 2) continues to be approved/recommended
Note:
Refer to "Factory Approved Service Products" S.I. in group 00 for complete listing of greases.
4. Adhere to the tightening torque of 30-40 Nm for the lock nut at the sliding joint (center support bearing).
5. Pay close attention to the installation position of the vibration damper in relation to the three-armed flange (Figures 2 & 3).
B. Modified Flex Disc on Front Propeller Shaft
Mode1 201.126
As of March 1989 production (from end number F616732), a modified flex disc is installed (bolt circle increased from 80 mm to 90 mm) on the transmission side of the propeller shaft (see also S.I. 27/80, April 1989). The vibration damper (20) is secured with hex. head bolts (11) behind the three-armed flange (on flex disc with 80 mm bolt circle the damper (20) was secured between the flex disc and the flange).
See Figures 4 and 5. The rear flex disc and the rear axle center piece remain unchanged.
C. Installing Flex-Resistant Disc (80 mm Bolt Circle)
Mode1s 201.024, 201.126 (up to F616731) and 201.122
For vehicles that operate under extreme conditions with a high degree of wear of the front flex disc (A), a flex-resistant disc may be installed (B, Figure 6). After the old stock of the flex disc is depleted, only the flex-resistant disc will be available from the PDC's.
Parts Information
In Case of Warranty
Time Allowance
Refer to latest time guide microfiche
Damage Code
41033 Flex disc, drive shaft; broken 06
wear 08
noisy 36