Honda TRX450R Service Manual page 407

HYDRAULIC BRAKE
Do not release the
brake pedal until
the bleed valve has
been closed.
Perform air bleeding for the other side bleed valve.
After bleeding air, operate the front brake lever. If it
still feels spongy, bleed the system again.
Fill the front master cylinder reservoir to the casting
ledge with DOT 4 brake fluid from a sealed con-
tainer.
Install the diaphragm, set plate and reservoir cap,
and tighten the screws.
TORQUE: 2 N m (0.2 kgf-m, 1.4 Ibfft)
Follow the
manufacturer's
operating
instructions.
Check the fluid level
often while
bleeding the brake
to prevent air from
being pumped into
the system.
If air enters the
bleeder from
around the bleed
valve threads, seal
the threads with
teflon tape.
REAR BRAKE
Close the rear brake caliper bleed valve.
Fill the rear brake reservoir with DOT 4 brake fluid
from a sealed container.
Connect a commercially available brake bleeder to
the bleed valve.
Operate the brake bleeder and loosen the bleed
valve.
If an automatic refill system is not used, add fluid
when the fluid level in the reservoir is low.
Perform the bleeding procedure until the system is
completely flushed/bled.
Tighten the bleed valve.
TORQUE: 6 N m (0.6 kgf m, 4.3 Ibfft)
Perform air bleeding for the other side bleed valve.
If the brake bleeder is not available, perform the fol-
lowing procedure:
Pump up the system pressure with the brake pedal
until the pedal resistance is felt.
Connect a bleed hose to the rear brake caliper bleed
valve and bleed the system as follows:
1. Depress the brake pedal all the way and loosen
the bleed valve 1/2 of a turn. Wait several sec-
onds and then close the bleed valve.
2. Release the brake pedal slowly and wait several
seconds after it reaches the end of its travel.
3. Repeat the steps 1 and 2 until there are no air
bubbles in the bleed hose.
CASTING LEDGE
19-7