APRILIA SHIVER 900 Service Station Manual page 382

Braking system
•
Once the procedure with PADS has been completed, repeat the TRADITIONAL BLEEDING
procedure to remove any remaining air from the system.
CAUTION
PERFORM THE STANDARD BRAKING SYSTEM BLEEDING PROCEDURE, AS DESCRIBED AT
THE END OF THE CHAPTER.
See also
Front
Rear
Front
Any air trapped in the hydraulic circuit acts as a cushion, absorbing much of the pressure applied by
the brake pump and minimising the braking power of the calliper.
The presence of air is signalled by the "sponginess" of the brake control and by poor braking efficiency.
CAUTION
IN VIEW OF THE DANGER THIS POSES FOR VEHICLE AND RIDER, THE HYDRAULIC CIRCUIT
MUST BE BLED AFTER REFITTING THE BRAKES AND RESTORING THE BRAKING SYSTEM TO
ITS NORMAL OPERATING CONDITIONS.
NOTE
THE FOLLOWING OPERATIONS REFER TO ONE FRONT BRAKE CALLIPER ONLY, BUT ARE
VALID FOR BOTH. THE VEHICLE MUST BE ON LEVEL GROUND TO BE BLED. WHILE BLEEDING
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.
CONVENTIONAL AIR PURGING SYSTEM
•
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 fluid reservoir
cap.
•
Operate the brake lever and then open
the bleed valve on the calliper 1/4 of a
turn to let the air out.
•
Close the bleed again before reaching
the lever end of the stroke and repeat
the operation until there is no air.
•
Repeat the procedure for both callip-
ers.
•
Screw the bleeding valve and remove the pipe.
BRAK SYS - 382
SHIVER 900