Cylinder Head Cover - Revised
86porsche01Subject:
Cylinder Head Cover
Model
928S
Group
1
Part Identifier
1570
Number
8606
July 9, 1986
ATTENTION: This Bulletin supersedes Group 1, Number 8606, dated March 14, 1986.
To improve sealing of the cylinder head cover and the eliminate the possibility of the spacer stud (6) becoming loose or breaking off during removal, the stud was deleted. The gaskets for cylinder head cover (1), spark plug holes (2) and the sealing washer
(4) are improved.
Torque for spacer bolts (3): 10 N-m (7 ft. lbs.)
As of production date : Jan. 9, 1986
Engine Numbers: 81G00549 81G06147
Key New Part Numbers Description
(1) 928 104 447 06 Cover gasket
(2) 928 104 443 07 Spark plug hole seal
(3) 928 104 481 17 Spacer belt (long)
(3) 928 104 481 18 Spacer belt (short)
(4) 928 104 417 01 Washer
(5) 999 701 731 40 O-ring
The new gaskets can be installed on early four valve engines.
The new bolts and washers cannot be replaced separate. The complete cylinder head has to be modified.
Old spacer stud (6) remains available as a spare part. Loose studs can be reinstalled using Loctite 270.