APRILIA SL 750 SHIVER Service Station Manual page 272

Braking system
THE FOLLOWING OPERATIONS REFER TO ONLY ONE FRONT BRAKE CALLIPER BUT APPLY
TO BOTH CALLIPERS. THE VEHICLE MUST BE ON LEVEL GROUND TO BE PURGED. WHILE
PURGING THE HYDRAULIC SYSTEM, FILL THE RESERVOIR WITH THE NECESSARY QUANTITY
OF BRAKE FLUID. CHECK THAT, DURING THE OPERATION, THERE IS ALWAYS BRAKE FLUID
IN THE RESERVOIR.
•
Remove the rubber protection cover
from the bleed valve.
•
Insert the transparent plastic pipe in
the front brake calliper bleed valve and
slide the other end of this pipe in a con-
tainer to collect the fluid.
•
Remove the front brake oil reservoir
cap.
•
Quickly press and release the front
brake lever several times and then
keep it fully pressed.
•
Loosen the bleed valve 1/4 of a turn so
that the brake fluid flows into the con-
tainer. This will release the tension on
the brake lever and will make it reach
the end of stroke.
•
Close the bleed valve before the lever
reaches its end of stroke.
•
Repeat the operation until the fluid
draining into the container is air-bubble
free.
NOTE
WHILE PURGING THE HYDRAULIC SYSTEM,
FILL THE RESERVOIR WITH THE NECESSARY
QUANTITY OF BRAKE FLUID. CHECK THAT,
DURING THE OPERATION, THERE IS ALWAYS
BRAKE FLUID IN THE RESERVOIR.
•
Screw the bleed valve and remove the pipe.
•
Top-up the reservoir until the correct brake fluid level is obtained.
•
Refit and block the front brake oil reservoir cap.
•
Refit the rubber protection cover.
Rear
If there is air in the hydraulic system, it acts as a bearing, absorbing a large part of the pressure from
the brake pump and minimising calliper efficiency during braking.
The presence of air is signalled by the "sponginess" of the brake control and poor braking efficiency.
BRAK SYS - 6
SL 750 SHIVER