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Porsche 944 User Manual

Page 73

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944

Engine/Cylinder Head, Valves

15

Adjusting with dial gages

2. Align dial gage with improvised

extension (205 mm long) on piston

crown {cylinder 1). 3 mm

pretension.

Align second gage with hydraulic

tappet of cylinder 1 intake

valve. The dial gage must be

aligned perpendicular to the

intake valve. 3 mm pretension.

3. Remove distributor rotor and lock

camshaft sprocket with 3

M 5 x 15, to prevent camshaft

sprocket or camshaft turning when

camshaft central bolt is

slackened.

4. Slacken camshaft central bolt -

note that it is essential to

counter. Slacken temporary

retaining bolts. Turn engine in

direction opposite to direction

of rotation until camshaft

sprocket reaches stop inside

feather-key groove

5. Tighten temporary retaining bolts

(6 Nm, 4.4 ftlb) and central bolt

(approx. 40 Nm, 30 ftlb).

Printed in Germany - XIII, 1987

Checking an Adjusting

Camshaft Settings

15 - 103