Bleeding The Hydraulic Brake System - Yamaha YFM45FAR Service Manual

BLEEDING THE HYDRAULIC BRAKE SYSTEM

È
É
BLEEDING THE HYDRAULIC BRAKE
SYSTEM
WARNING
Bleed the brake system if:
The system has been disassembled.
G
A brake hose or brake pipe have been
G
loosened or removed.
The brake fluid has been very low.
G
The brake operation has been faulty.
G
A loss of braking performance may occur if
the brake system is not properly bled.
1.Bleed:
Brake system
G
*****************************************************
Air bleeding steps:
a.Add the proper brake fluid to the reservoir.
b.Install the diaphragm. Be careful not to spill
any fluid or allow the reservoir to overflow.
c.Connect the clear plastic hose 1 tightly to
the caliper bleed screw 2.
È Front
É Rear
d.Place the other end of the hose into a
container.
e.Slowly apply the brake lever or pedal several
times.
f. Pull the lever in or push down on the pedal
and hold it.
g.Loosen the bleed screw and allow the lever
or pedal to travel towards its limit.
h.Tighten the bleed screw when the lever or
pedal limit has been reached, then release
the lever or pedal.
i. Repeat steps (e) to (h) until all the air
bubbles have disappeared from the fluid.
j. Tighten the bleed screw.
Bleed screw:
6 Nm (0.6 m • kg, 4.3 ft • lb)
NOTE:
If bleeding is difficult, it may be necessary to
let the brake fluid settle for a few hours.
Repeat the bleeding procedure when the tiny
bubbles in the system have disappeared.
3 - 41
CHK
ADJ