Saab SONETT III Service Manual page 100

BRAKE OPERATION
Brake pedal
The brake pedal is c,arried together with the clutch pedal
under the pedal plate on a common shaft. The shaft, in
its tum, is carried in two brackets which are welded to
the dash panel and floor. The master cylinder is attached
to the dash panel.
The brake-pedal movement is transmitted to the master
cylinder via a push-rod of adjustable iength which is pivot-
connected to the pedal.
Pedal stand
Each pedal can be removed separately if the pedal shaft is
removed.
1. Remove the floor mat and the wallboard panels. Re-
move the gear lever knob and rubber boot. Remove
the gearbox cover (4 screws).
2. Back off and remove the screws hold ing the pedal
plate and lift out the two parts of the latter.
3. Release the clutch-pedal push-rod by removing the
cotter pin and shaft bolt.
4. Release the return springs of the brake pedal and
clutch pedal.
5. Strike out all slotted pins and pull out the pedal shaft.
6. Detach the push-rod from the rubber boot, thereby
enabling the brake pedal to be separated from the
master cylinder. When the pedal is then lifted out, it
will be accompanied by the push-rod.
Reinstall in the reverse sequence and then adjust the brake-
pedal free movement.
BRAKE PEDAL FREE MOVEMENT
A = 0.12-0.24
in.
(3-6 mm)
Adjustment of brake-pedal free movement
In order to ensure that the piston in the master cylinder
will return fully every time the brake pedal is released,
there must always be a clearance between the master-
cylinder piston and the brake-pedal push-rod when the
pedal is at rest. This clearance, measured at the tip of
the pedal, should be 0.12-0.24 in. (3-6 mm). Measured
between the push-rod and the piston, the clearance
should amount to 0.024-0.047 in. (0.6-1.2 mm). See
Tig.
Adjust as foliows:
1. Back off the locking nut, see fig.
2. Tum n the hexagonal part of the push-rod until the
correct clearance is obtained at the tip of the pedal.
3. Tighten the lock ing nut.
Brake warning system
See Chapter 3 "Electrical controls and switches".
524-1
SAAB
June 1970