9 - BRAKING SYSTEM
217
BLEEDING THE BRAKE SYSTEM PIPE
The brake fluid has a very low compression coefficient, with
the result that almost all the movements of the brake lever are
transmitted directly to the calliper for braking. Air however
compresses easily. When air enters the brake system pipes,
the movement of the brake lever is partially used up in com-
pressing the air. This causes the lever to feel spongy and leads
to a loss of braking power.
BLEED AIR OUT OF THE BRAKE
WHEN THE BRAKE LEVER FEELS
SPONGY AFTER CHANGING
THE BRAKE FLUID OR WHEN
THE BRAKE SYSTEM PIPE HAS
BEEN LOOSENED FOR ANY
REASON.
1. Remove:
- Bolts (1).
- Reservoir cover (2).
2. Fill:
- The reservoir with brake fluid up to the top reservoir line.
3. Pump:
- With the cover removed, pump the brake lever slowly se-
veral times until no bubbles can be seen rising through the
liquid.
4. Bleed:
- The air completely from the master cylinder using this
procedure.
5. Remove:
- The transparent plastic cap from the bleed nipple (3) and
refill from the other end of the hose (lever reservoir).
6. Repeat:
- This procedure until there is no air left emerging towards
the bleed valve (3).
7. Pump:
- The brake pedal until it becomes hard and holds the
brakes down.
8. Open and close:
- The bleed valve (3) quickly while keeping the brake on.
9. Release:
- The brake.
WARNING
1
2
3
Содержание GPR 125 Racing
Страница 1: ...WORKSHOP MANUAL GPR 125 4 stroke ...
Страница 30: ...2 PDI Pre delivery inspection 30 2 PDI Pre delivery inspection PDI Pre delivery inspection 31 2 1 ...
Страница 169: ...6 COOLING SYSTEM 169 6 1 DIAGRAM OF THE SYSTEM ...
Страница 170: ...6 COOLING SYSTEM 170 ...
Страница 179: ...7 LUBRICATION SYSTEM 179 7 1 DIAGRAM OF THE SYSTEM ...
Страница 180: ...7 LUBRICATION SYSTEM 180 ...
Страница 192: ...8 CHASSIS 192 FITTING FRONT SUSPENSION ...
Страница 202: ...9 BRAKING SYSTEM 202 9 BRAKING SYSTEM FRONT BRAKE REAR BRAKE 203 211 9 1 9 2 ...
Страница 247: ...Rev 0 2009 ...