Adjusting The Rear Brake - APRILIA RS 50 Workshop Manual

Routine maintenance operations
RS 50

ADJUSTING THE REAR BRAKE

4
3
The brake pedal is adjusted to fit most riders during
manufacture.
If you wish to adjust the brake pedal:
2
Position the motorcycle on the stand.
1
Loosen the lock nut (1).
Unscrew the brake adjusting bolt (2) completely.
Loosen the lock nut (3) on the master cylinder push
rod (4) and run it as far towards the master cylinder as
far as it will go on the threads of the push rod.
Screw the push rod (4) completely into the clevis, then
unscrew it three to four turns.
Adjust the brake adjuster bolt (2) until the brake pedal
(5) is positioned as you like it.
Screw down and tighten the lock nut (1) on the brake
adjuster bolt (2).
Screw the master cylinder push rod (4) out of the
clevis until it just contacts the master cylinder piston.
Then, screw the push rod into the clevis to obtain a
minimum clearance of 0.5 - 1 mm (0.02 - 0.04 in)
between the master cylinder push rod (4) and the
master cylinder piston.
CAUTION
Be sure there is the specified clearance between
the master cylinder push rod and the master
cylinder piston. If this caution is not observed, the
brake will remain slightly applied, with subse-
quent brake overheating and wear of pads and
discs.
Clearance between the push rod and the piston:
0.5 - 1 mm (0.02 - 0.04 in).
Lock the push rod in position with the lock nut (3).
5
WARNING
After making any brake adjustment apply the
brakes repeatedly. Try the brakes in a parking lot
or other area where there is little traffic. After you
have completed the adjustment, lift the wheel free
of the ground and ensure that it rotates freely
when the brake is released.
2-30
ch. 2
Release 00 2001-03