911 SC Cabriolet F6-2994cc 3.0L SOHC (1983)
Mainshaft: Technical Service Bulletins
A/T - Modified Mainshaft Seal and Guide Tube
Subject:
Mainshaft Seal And Guide Tube
Model
911
Group
3
Part Identifier
3550
3047
Number
8501
April 25, 1985
As of the below VIN's, the seal and guide tube were modified:
914ES121832 - Coupe 91XES161758 - Targa 918ES170968 - Cabriolet
Parts Information:
OLD
NEW
999.113.283.40 - Seal
999.113.327.40 - Seal
915.116.087.03 - Guide Tube
915.116.087.04 - Guide Tube
The new seal has an additional dust lip (arrow) and its location in the guide tube has been moved 10 mm to assure proper alignment with the shaft.
FIGURE 2
In case of repair, you should be aware of the following:
-
Only the new seal is available
-
The new guide tube can be installed in all older models including M.Y. 1976.