Clutch Operation - Porsche 928 Workshop Manual

928 Clutch, Controls
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Clutch operation
Checking clutch free travel Adjusting the clutch spring
Due to the fact that the clutch is fitted with an
automatic hydraulic adjuster, the clutch free
travel cannot be checked at the clutch pedal.
To ensure proper operation of the clutch. how-
ever, the pushrod must be adjusted correctly,
Adjusting the pushrod
Adjust for zero clearance with the pushrod (1)
disengaged to allow the pushrod to be pushed
over the pin (2) without any load being present.
Then preload the pushrod by rotating by one
turn and lock with nut (3).
To boost foot pressure, a boost spring is fitted
to reduce the pedal force required. To achieve
this effect, the boost spring must be preloaded
sufficiently.
When measuring from the inside of the spring
cup to the center of the mounting pin, dimen-
sion A must be 43 mm for vehicles up to
MY '91 and 21 mm for vehicles as of MY '92
with the clutch engaged (clutch pedal at end
stop).
If required, correct setting by rotating the wing
nut or the hexagon nut, respectively.
Clutch operation
Printed in Germany - XXVII, 1991
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