Checking Clutch Pressure Plate; Checking Clutch Intermediate Plate - Porsche 928 Workshop Manual

30
Clutch,
Controls
928
CHECKING CLUTCH PRESSURE PLATE
Clutch pressure plates have not been designed to
permit overhauling or repairing. Checking is limited to
dry cleaning and removing of dust with compressed
air and emery cloth as well as a thorough visual
inspection.
1. Clean clutch. Clean bearing surface of pressure
plate with emery cloth, if necessary. Then blow
out entire mechanism thoroughly with compressed
air.
2. Check tips of diaphragm springs for traces of wear
from clutch release bearing. Scoring to a depth of
0.3 mm is not significant.
3. Inspect bearing surface of pressure plate for
cracks, burnt spots and wear. Check deflection
with a steel ruler. Pressure plates with up to
0.3 mm deflection inward (measured with a feeler
gauge blade1 can still be used.
4. Inspect spring connections between pressure plate
and cover for cracks. Check tightness of rivets.
Replace pressure plates with damaged or loose
rivets.
CHECKING CLUTCH INTERMEDIATE PLATE
Clutch intermediate plates have not been designed
to permit overhauling or repairing. Checking is
limited to dry cleaning and removing of dust with
compressed air and emery cloth as well as a
thorough visual inspection.
1. Clean intermediate plate. Clean bearing surfaces
with emery cloth when necessary. Polish out
burnt spots. Blow out entire mechanism with
compressed air.
2. Check bearing surfaces for cracks, burnt spots
and wear. Check deflection with a steel ruler.
Intermediate plates with up to 0.3 mm
deflection inward (measured with a feeler
gauge blade) can still be used.
3. Inspect spring connection between intermediate
plate and intermediate plate housing for cracks.
Inspect rivets for tight fit and adjusting elements
for damage, replacing intermediate plate if
necessary.
4. Check tight fit of centering pins in intermediate
plate of dowel pin centered clutch. Straighten
or replace bent or damaged centering pins.
30-24 Checking Clutch Pressure Plate
Printed in Germany
Checking Clutch Intermediate Plate