S 320 SWB (140.032) L6-3.2L (104.994) (1994)
Technical Service Bulletin # 05_086A
Date: 911201
Camshaft - Replacement, Changes and Parts
TO: OUR MERCEDES-BENZ PASSENGER CAR DEALERS
DATE: December 1991
REF.NO. 05/86a
Revision: This S.I. contains corrected information concerning camshaft applications (section B).
SUBJECT:
Engine 104
Updates Section 3 of SI 05/86, Dated January 1, 1991
A: Removing And Installing Camshafts
B: Camshafts With Modified Cam Profile
C: Versions And Combinations Of Engine Timing Parts In Case Of Repair
A: Removing/Installing Camshaft
Camshaft Removal
The camshafts of this engine must be removed/installed with the utmost care. To avoid breaking of camshafts, the loosening and tightening specifications
for camshaft bearing caps, as well as the basic setting of camshafts in relation to ignition TDC of cylinder no. 1, must be observed with critical attention.
The following repair notes complement the Microfiche Repair Instructions, Engine 104, Mechanical, Group 05, job number 05-220 "Installing/removing
camshafts". Please refer to the microfiche together with this service information.
Note:
The camshafts must only be installed/removed in the basic position.
Basic Position
Figure 1
1.
Piston of cylinder no. 1 at ignition TDC. The camshaft setting bores with 4 mm diameter (arrows) touch the upper edge of the cylinder head (both
on the outside). Be sure the camshaft timing adjuster is in the retard position. (This is achieved by ensuring the engine is only rotated in the correct
direction of rotation, never backwards, throughout the entire procedure) (Figure 1).