Clutch - Porsche 928 1980 Owner's Manual

Gearshifting
(Manual Transmission)
The Porsche transmission with servo-lock
synchronisation permits rapid and precise
shifting of gears. When changing gears
make sure that the clutch pedal is fully de-
pressed to the floor, and that the gearshift
lever is completely engaged. The engine
speeds for the individual gears are listed in
the chart on this page.
The clutch pedal must be depressed several
seconds before shifting into reverse; only
then move the gearshift lever to the left,
overcoming the spring resistance, and to the
front.
Both back-up lights come on when the trans-
mission is put into reverse (with ignition on).
Reverse should only be selected after the
vehicle has come to a complete stillstand.
The gear positions are shown in the diagram
on the right.

Clutch

Due to the hydraulic operation of the clutch,
a free travel of the clutch pedal of 0 , 1 " or
2.5 mm is necessary.
Should this free travel suddenly become
bigger, it could mean a malfunction of the
clutch. See your Porsche dealer for recti-
fication.
The specified maximum rpm figures should
not be exceeded when shifting down, as
otherwise the engine speed would be too
high. This applies to standard gear ratios
only.
For smooth shifting, observe the following
shift points (applies to standard gear ratios
only):
Maximum downshift points
5th to 4th gear
120 mph / 1 9 2 km/h or 4500 rpm
4th to 3rd gear
89 mph / 1 4 2 km/h or 4500 rpm
3rd to 2nd gear
65 mph /103 km/h or 4500 rpm
2nd to 1st gear
45 mph / 71 km/h or 4200 rpm
Minimum upshifting points
1st to 2nd gear
15 mph / 24 km/h or 1900 rpm
2nd to 3rd gear
25 mph / 40 km/h or 2300 rpm
3rd to 4th gear
40 mph / 64 km/h or 2700 rpm
4th to 5th gear
48 mph / 77 km/h or 2400 rpm
Please observe all local and national
speed limits!
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