Gilera 633499 - Front Brake System Bleeding and Pump

Removal
- To facilitate this operation remove the two calliper
fixings. With the calliper detached from its support
but still connected to the brake fluid line, remove
the plastic cover by prising it with a screwdriver.
- Remove the outside circlip from the brake pad
pin, the leaf spring and the pads.
- Renew the pads when friction facing thickness is
less than 1.5 mm.
Refitting
- To reassemble perform the above steps in reverse order. Position the leaf spring with the arrow facing
up.
Fill
Front
- With the bleed valve closed, fill the system to the
maximum level with brake fluid.
- Loosen the bleed valve.
- Apply the tube of the specific tool to the bleed
valve.
To bleed the circuit you must supply the reservoir
constantly with oil while pumping the Mityvac
pump until there is no more air leaving the circuit.
The operation is concluded when the bleed screw
delivers only oil and no air.
- Close the bleed screws.
- When you have finished the above procedure,
tighten the bleed screw to the prescribed torque.
N.B.
IF AIR CONTINUES TO COME OUT DURING
PURGING, EXAMINE ALL THE FITTINGS:
IF SAID FITTINGS DO NOT SHOW SIGNS OF
BEING FAULTY, LOOK FOR THE AIR INPUT
AMONG THE VARIOUS SEALS ON THE PUMP
AND CALLIPER PISTONS.
CAUTION
Braking system Runner Purejet
BRAK SYS - 6