Porsche 928 S 1984 Owner's Manual page 26

Brake booster
The brake booster assists braking only
when the engine is running.
When the car is moving while the engine is not
running, or if the brake booster is defective,
more pressure on the brake pedal is required
to bring the car to a halt.
Brake operation and brake warning light
Make it a habit to check the operation of your
brakes before driving.
The central warning light and the brake fluid
warning light in the combination instrument
will flash when the level in the brake fluid re-
servoir is too low (see "Central warning light
system").
Brake wear
Our automobiles have excellent brakes, but
they are still subject to wear, depending on
how the brakes are used. Have the brake sys-
tem inspected at the intervals recommended
in your Warranty & Maintenance booklet.
New brake pads or linings
Brake pads or linings may not have the highest
possible braking efficiency when new. There-
fore, allow for longer braking distance during
the initial 100 to 150 miles or 150 to 250 kilo-
meters of normal city driving if fewer stops are
realized.
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 big-
ger, it could mean a malfunction of the clutch.
See your Porsche dealer for rectification.
The specified maximum rpm figures should
not be exceeded when shifting down, as other-
wise the engine speed would be too high. This
applies to standard gear ratios only.
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