Disassembling And Assembling Valve Train - Porsche 928 Workshop Manual

928
Engine, Cylinder Head, Valves
15
DISASSEMBLING AND ASSEMBLING
VALVE TRAIN
Installing Cylinder Head
Camshaft Housing
The cylinder head can be removed from an en
gine in the car.
Lubricate plugs lightly and install by hand. For
engine with aluminum plugs the torque is 40 Nm.
use new seals.
Printed in Germany VII, 1983
Disassembling and Assembling Valve Train
15.7
Tightening sequence: see figure
Loosening sequence: opposite
Note
Never use any lubricant for the installation of
cylinder head nuts and washers. Only the threads
of the studs must be given a light coat of engine
oil.
Washer must not turn when tightening cylinder
head nuts! Control by making paint marks if ne
cessary. On the repair sector the washer can be
made reusable by roughening the bearing surface
facing the cylinder head with a rough grain sand-
paper.
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Note installed position of camshaft housing gasket
Camshaft oil bore must be clear (arrow).
Position of installed cylinder head gasket.
Watch marks, "TOP" and arrow. when installing
Arrow faces forward (see figure).