Air-Bleeding The Braking Systems - APRILIA RS 50 Workshop Manual

Periodic Maintenance Operations
RS 50
Watch the outflow of the fluid on reservoir (2) and
tighten bleeder (1) before the reservoir has emptied.
Top up by pouring fluid into reservoir (2) (CHECKING
AND RESTORING THE BRAKE FLUID LEVEL).
Loosen bleeder (1) of about a half turn.
Check the outflow of the fluid from the tube and, when
the colour of the fluid changes (from a dark colour to a
lighter colour), tighten bleeder (1) and remove the
tube.
1
Replace the rubber cap.
2
Restore the level of the fluid in reservoir (2) (CHECK-
ING AND RESTORING THE BRAKE FLUID LEVEL).
MAX
MIN

AIR-BLEEDING THE BRAKING SYSTEMS

Read through the section PRECAUTIONS AND
GENERAL INFORMATION and the paragraph
BRAKE FLUID.
Air-bleed the system after the first 500 km (300 mi).
Air trapped in the hydraulic circuit acts like a cushion,
absorbing a large proportion of the pressure devel-
oped by the brake pump and interfering with the
performance of the brake caliper.
The presence of air in the circuit is denoted by a
"spongy" feel of the brake lever and a reduced braking
action.
WARNING
Handle the brake fluid with care as it chemically
alters painted, plastic and rubber parts.
DO NOT DISPOSE OF THE FLUID IN THE ENVI-
RONMENT.
2-28
chap. 2
Release 00 2000-11