Brake Fluid Level Check; Brake Hose Inspection; Air Bleeding From Brake Fluid Circuit - Suzuki GSX-R600 Manual

Brake Fluid Level Check

Refer to "Brake System Inspection in Section 0B
(Page 0B-17)".

Brake Hose Inspection

Refer to "Brake System Inspection in Section 0B
(Page 0B-17)".

Air Bleeding from Brake Fluid Circuit

Air trapped in the brake fluid circuit acts like a cushion to
absorb a large proportion of the pressure developed by
the master cylinder and thus interferes with the full
braking performance of the brake caliper. The presence
of air is indicated by "sponginess" of the brake lever and
also by lack of braking force. Considering the danger to
which such trapped air exposes the machine and rider, it
is essential that after remounting the brake and restoring
the brake system to the normal condition, the brake fluid
circuit be purged of air in the following manner:
CAUTION
!
Handle brake fluid with care: the fluid reacts
chemically with paint, plastic, rubber
materials, etc.
Front Brake
NOTE
If air is trapped in the master cylinder, bleed
air from the master cylinder first in the same
manner as follows. Refer to "Front Brake
Master Cylinder Assembly Removal and
Installation (Page 4A-11)".
1) Fill the reservoir with brake fluid to the upper mark of
the reservoir. Place the reservoir cap to prevent dirt
from entering.
2) Attach a hose to the air bleeder valve, and insert the
free end of the hose into a receptacle.
3) Squeeze and release the brake lever several times
B837H14106005 in rapid succession and squeeze the lever fully
without releasing it.
B837H14106006
B837H14106007
4) Loosen the air bleeder valve by turning it a quarter of
a turn so that the brake fluid runs into the receptacle,
this will remove the tension of the brake lever
causing it to touch the handlebar grip.
5) Close the air bleeder valve, pump and squeeze the
lever, and open the valve.
6) Repeat this process until the fluid flowing into the
receptacle no longer contains air bubbles.
NOTE
While bleeding the brake system, replenish
the brake fluid in the reservoir as necessary.
Make sure that there is always some fluid
visible in the reservoir.
7) Close the air bleeder valve and disconnect the hose.
Tightening torque
Air bleeder valve (Front): 7.5 N·m (0.75 kgf-m,
5.5 lb-ft)
I837H1410004-01
Brake Control System and Diagnosis: 4A-5
I837H1410005-01
I837H1410006-01