Porsche 928 Workshop Manual page 212

15
Engine, Cylinder Head, Valves 928
Note
The drag needle must always be placed on
the gauge needle after the lock pin has
engaged to exclude erroneous gauge
readings (turn anticlockwise).
10. Pull out lock pin to have gauge tip
disengage.
Important
Engine must be turned to position
described in point 5 for this test.
Repeat test one or two for checking!
Adjusting value: 5.0 + 0.3.
Correct belt tightness if necessary.
Adjusting
The toothed belt adjusting screw is located
on bottom of engine at front righthand side.
Loosen lock nut of adjusting screw and turn
adjusting screw until correct toothed belt
tightness is reached. Tighten lock nurt. Turn
engine two more turns and recheck belt
tightness.
Screw tightened - belt tightened.
Screw loosened - belt loosened
Note
Never turn engine anticlockwise, because
toothed belt could jump off if tightness
were insufficient.
, wii.
+.
15.104 Checking and Adjusting
Toothed Belt
Printed in Germany