Bleeding The Brake Circuits - APRILIA RS 50 Workshop Manual

Routine maintenance operations
RS 50
Keep checking the fluid as it flows out of the reservoir
(2), and tighten up the bleed valve (1) before the
reservoir empties.
Top up the reservoir (2) see (CHECKING AND TOP-
PING UP THE BRAKE FLUID).
Slacken the bleed valve (1) again, about half a turn.
Check the fluid as it flows down the tube, and when
the color of the fluid changes (from darker to lighter)
tighten up the bleed valve (1) and remove the tube.
1
Refit the protective rubber cap.
2
Top up the fluid to the correct level in the reservoir (2)
see (CHECKING AND TOPPING UP THE BRAKE
FLUID).
MAX
MIN

BLEEDING THE BRAKE CIRCUITS

Read carefully (PRECAUTIONS AND GENERAL
INFORMATION) and (BRAKE FLUID).
Bleed the air from the system after the first 500 km
(312 miles).
If there is any air in the hydraulic system it acts as a
cushion, absorbing most of the pressure exerted on
the brake master cylinder and reducing the effective-
ness of the brake calipers when braking.
Air in the system also give a "spongy" feel to the brake
lever and reduces the braking capacity.
WARNING
Handle the fluid with care: it reacts chemically
with the paintwork, plastic parts, rubber parts, etc.
DO NOT DISPOSE OF BRAKE FLUID IN THE
ENVIRONMENT.
2-28
ch. 2
Release 00 2001-03