APRILIA SR 50 Workshop Manual page 39

PERIODIC MAINTENANCE
WARNING
Avoid long 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 level.
•
Raise and remove 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 tank (3) with brake fluid to correct level.
WARNING
Never top up to maximum level, just top up
until level is above "MIN" mark. It is advisable
to top up until reaching the "MAX" level only
with new pads. 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
calliper bleed valve and the other end in a container for
collection.
•
Loosen the bleed valve of about one turn.
CAUTION While carrying out this operation, check that some
fluid is always present inside the tank. 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 again the bleed valve of about half a turn.
• Check that the fluid comes out of the plastic tubing
and, as soon as the fluid colour changes (from a darker
to a lighter colour) tighten the bleed valve and remove
the tubing.
•
Refit the rubber cap.
•
Top up fluid inside tank.
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