Bleeding the rear braking system
A long travel and mushy feel of the brake pedal indicate that there is air
in the system and the brake needs bleeding.
Bleeding procedure is as follows:
- Remove reservoir cap (A) (21 mm wrench) and diaphragm and ll with uid
(DOT 4).
- Attach a clear plastic hose to the calliper bleed valve (1) and place the other
end of the hose in a vessel.
- Press the pedal (2) fully down.
- With the lowered pedal (2), loosen the bleed valve (1) so the uid can come
out of the small tube (initially only air will come out), then close the valve (1)
always keeping the pedal lowered, then release the pedal.
- Top up the uid level, wait a few seconds, then repeat a few times the proce-
dure described in the line above until the liquid comes out of the transparent
hose without bubbles.
- Tighten the bleed valve to the specied torque and check uid level (B) in the
reservoir before retting the cap (A). If the bleeding procedure was performed
correctly, the pedal will no longer have that mushy feel. If not so, repeat the
procedure.
Fluid level inside the reservoir shall never drop below the minimum
notch during the bleeding procedure.
If brake lever or brake pedal feel mush after a fall or a repair result-
ing in loss of braking, bleed the circuit as described above.
Bleed valve tightening torque: 12-16 Nm, 1.2-1.6 Kgm, 8.8-11.8 ft/
lb.
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