Brake Fluid - Subaru Legacy 2002 Service Manual

20. Brake Fluid

A: REPLACEMENT
1) Either jack up vehicle and place a safety stand
under it, or lift up vehicle.
2) Remove both front and rear wheels.
3) Draw out the brake fluid from master cylinder
with syringe.
4) Refill reservoir tank with recommended brake
fluid.
Recommended brake fluid:
FMVSS No. 116, fresh DOT3 or 4 brake
fluid
NOTE:
¼ Avoid mixing different brands of brake fluid to
prevent degrading the quality of the fluid.
¼ Be careful not to allow dirt or dust to get into the
reservoir tank.
Bleeding sequence (1) → (2) → (3) → (4)
(1) Front right
(2) Rear left
(3) Front left
(4) Rear right
(5) Secondary
(6) Primary
5) Install one end of a vinyl tube onto the air
bleeder and insert the other end of the tube into a
container to collect the brake fluid.
BRAKE FLUID
SA07162
SA07162A20
GI0054A
GI0055
NOTE:
¼ Cover bleeder with waste cloth, when loosening
it, to prevent brake fluid from being splashed over
surrounding parts.
¼ During bleeding operation, keep the brake
reserve tank filled with brake fluid to eliminate entry
of air.
¼ Brake pedal operation must be very slow.
¼ For convenience and safety, it is advisable to
have two people working.
¼ The amount of brake fluid required is approxi-
mately 500 m (16.9 US fl oz, 17.6 Imp fl oz) for
total brake system.
6) Instruct your co-worker to depress the brake
pedal slowly two or three times and then hold it
depressed.
7) Loosen bleeder screw approximately 1/4 turn
until a small amount of brake fluid drains into
container, and then quickly tighten screw.
8) Repeat steps 6) and 7) above until there are no
air bubbles in drained brake fluid and new fluid
flows through vinyl tube.
NOTE:
Add brake fluid as necessary while performing the
air bleed operation, in order to prevent the tank
from running short of brake fluid.
9) After completing the bleeding operation, hold
brake pedal depressed and tighten screw and
install bleeder cap.
Tightening torque:
8 N·m (0.8 kgf-m, 5.8 ft-lb)
10) Bleed air from each wheel cylinder by follow-
ing the previous 5 steps.
11) Depress brake pedal with a force of approxi-
mately 294 N (30 kgf, 66 lb) and hold it there for
approximately 20 seconds. At this time check
pedal to see if it makes any unusual movement.
Visually inspect bleeder screws and brake pipe
joints to make sure that there is no fluid leakage.
12) Install wheels, and drive vehicle for a short
distance between 2 to 3 km (1 to 2 miles) to make
sure that brakes are operating properly.
PM-31
Periodic Maintenance Services