Subaru Legacy 2005 Service Manual page 3318

BRAKE
11.Air Bleeding
A: PROCEDURE
CAUTION:
• Keep the brake fluid away from painted sur-
faces of vehicle body. Wash away with water
and wipe off if spilled.
• Avoid mixing different brands of brake fluid
to prevent degrading the quality of fluid.
• Be careful not to allow dirt or dust to get into
the reservoir tank.
1. MASTER CYLINDER
NOTE:
• If the master cylinder is disassembled or reser-
voir tank is empty, bleed the master cylinder.
• If bleeding of master cylinder is not necessary,
bleed the brake line by skipping the procedure be-
low. <Ref. to BR-38, BRAKE LINE, PROCEDURE,
Air Bleeding.>
1) Fill the reservoir tank of master cylinder with
brake fluid.
NOTE:
During the operation, keep the reservoir tank filled
with brake fluid to eliminate entry of air.
2) Disconnect the brake line at primary and sec-
ondary sides.
3) Put a plastic bag cover on master cylinder.
4) Slowly depress the brake pedal and hold it.
5) Close the outlet plug with your finger, and then
release the brake pedal.
6) Repeat the step 4) to 5) several times.
7) Remove the plastic bag.
Air Bleeding
8) Install the brake pipes to master cylinder.
Tightening torque:
Model with ABS
15 N
Model with VDC
19 N
9) Bleed air from the brake line. <Ref. to BR-38,
BRAKE LINE, PROCEDURE, Air Bleeding.>
2. BRAKE LINE
1) When the master cylinder has been disassem-
bled or the reservoir tank is empty, bleed the mas-
ter cylinder before bleeding brake line. <Ref. to BR-
38, Air Bleeding.>
2) Fill the reservoir tank of master cylinder with
brake fluid.
NOTE:
During the bleeding operation, keep the reservoir
tank filled with brake fluid to eliminate entry of air.
3) Fit one end of vinyl tube into the air bleeder and
put the other end into a brake fluid container.
4) Depress the brake pedal several times, and hold
it depressed.
5) Loosen the air bleeder screws to discharge
brake fluid. With the air bleeder tightened quickly,
release the brake pedal.
6) Repeat the steps 4) to 5) until there are no more
air bubbles in the vinyl tube.
BR-00090
7) Repeat the steps above from 2) to 6) to bleed air
from each wheel.
NOTE:
Perform the operation in the order from closest
wheel cylinder to master cylinder.
8) Tighten the air bleeder screws securely.
Tightening torque:
8 N
9) Check that there is no brake fluid leak evident in
the entire system.
BR-00091
BR-38
⋅
m (1.5 kgf-m, 10.8 ft-lb)
⋅
m (1.9 kgf-m, 14.0 ft-lb)
⋅
m (0.8 kgf-m, 5.8 ft-lb)
BR-00087