Subaru 2004 LEGACY, Service Manual

Page: 495 / 609

BR-36
BRAKE
Brake Fluid
10.Brake Fluid
A: INSPECTION
1) Check that the brake fluid level remains between
“MIN” and “MAX”. If out of the specified range, refill
or drain fluid. If the fluid level becomes close to
“MIN”, refill fluid.
2) Check the fluid for discoloration. If the fluid color
has excessively changed, drain the fluid and refill
with new fluid.
B: REPLACEMENT
CAUTION:
• To always maintain the brake fluid character-
istics, replace the brake fluid according to
maintenance schedule or earlier than that when
used in severe condition.
• Fresh Subaru genuine fluid must be used.
• Cover the bleeder with cloth, when loosening
it, to prevent brake fluid from being splashed
over surrounding parts.
• Do not allow brake fluid to come in contact
with vehicle body; wash away with water and
wipe off completely 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.
NOTE:
• During the bleeding operation, keep the brake
reservoir tank filled with brake fluid to eliminate en-
try of air.
• The brake pedal operating must be very slow.
• For convenience and safety, two people should
do the work.
• The amount of brake fluid required is approxi-
mately 500 m
2
(16.9 US fl oz, 17.6 Imp fl oz) for to-
tal brake system.
1) Either lift-up the vehicle to place a rigid rack un-
der it, or lift-up the vehicle.
2) Remove both the front and rear wheels.
3) Draw out the brake fluid from master cylinder.
4) Refill the reservoir tank with recommended
brake fluid.
Recommended brake fluid:
Refer to the specification. <Ref. to BR-2,
SPECIFICATION, General Description.>
5) Install one end of a vinyl tube onto air bleeder
and insert the other end of the tube into a container
to collect brake fluid.
CAUTION:
Brake fluid replacement sequence; (A) Front
RH
→
(B) Rear LH
→
(C) Front LH
→
(D) Rear RH
6) Instruct your co-worker to depress the brake
pedal slowly two or three times and then hold it de-
pressed.
7) Loosen the bleeder screws to drain brake fluid.
And then quickly tighten the screw.
8) Release the brake pedal slowly. Repeat steps 6)
through 8) until there are no more air bubbles in the
drained brake fluid.
NOTE:
Add brake fluid as necessary while performing air
bleed operation, in order to prevent the tank from
running short of brake fluid.
9) After completing the bleeding operation, hold the
brake pedal depressed and tighten the screw and
install bleeder cap.
Tightening torque (Bleeder screw):
8 N
⋅
m (0.8 kgf-m, 5.8 ft-lb)
10) Bleed air from each wheel cylinder using the
same procedures as described in steps 6) through
8) above.
(1) Master cylinder
(2) Hydraulic unit
(3) Proportioning valve
BR-00087
(3)
(1)
(2)
(A)
(C)
(D)
(B)
BR-00089