APRILIA SR 50 Workshop Manual page 44

PERIODIC MAINTENANCE
WARNING
Avoid prolonged exposure of brake fluid to air.
Brake fluid is hygroscopic and will absorb
moisture from the air. Keep the brake fluid
reservoir open JUST LONG ENOUGH to top up
the level.
•
Raise and remove the cover (1).
•
Remove the gasket (2).
CAUTION In order not to spill the brake fluid while topping
up, do not shake the vehicle.
•
Top up the tank (3) with brake fluid to the correct level.
WARNING
Never top up to the maximum level, just top up
until the level is above the "MIN" mark. It is
advisable to top up until reaching the "MAX"
level only with new pads. The brake fluid level
decreases as the brake pads wear down. Do not
reach the "MAX" level with worn out pads,
since this will cause a fluid outflow when the
pads are changed.
•
To refit components, follow the disassembly procedure
in reverse order.
CHANGING THE BRAKE FLUID
•
Remove the bleed valve rubber cap.
•
Insert one end of a transparent plastic tubing inside the
caliper bleed valve and the other end in a receptacle
for collection.
•
Loosen the bleed valve by about one turn.
CAUTION While carrying out this operation, ensure that
some fluid is always present inside the reservoir. If this is not
the case, once the operation is over, the air must be bled
out.
• Check that the fluid is flowing off the tank and, before
emptying, tighten the bleed valve.
• Top up.
•
Loosen the bleed valve again by about half a turn.
•
Check that the fluid comes out of the plastic tubing
and, as soon as the fluid color changes (from a darker
to a lighter color) tighten the bleed valve and remove
the tubing.
•
Refit the rubber cap.
•
Top up fluid inside the reservoir.
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SR 50