Brake Fluid - Subaru Legacy 2004 Service Manual

PERIODIC MAINTENANCE SERVICES

17.Brake Fluid

A: REPLACEMENT
1) Either jack-up the vehicle and place a rigid rack
under it, or lift-up the vehicle.
2) Remove all the wheels.
3) Drain the brake fluid from master cylinder.
4) Refill the reservoir tank with recommended
brake fluid.
Recommended brake fluid:
Refer to "RM" section. <Ref. to RM-5, FLUID,
RECOMMENDED MATERIALS, Recommend-
ed Materials.>
NOTE:
• 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.
Air bleeding sequence (1) % (2) % (3) % (4)
(1)
(5) (6)
(3)
(1) Front RH
(2) Rear LH
(3) Front LH
(4) Rear RH
(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
NOTE:
• Cover the bleeder with cloth, when loosening it,
to prevent brake fluid from being splashed over sur-
rounding parts.
• During the bleeding operation, keep the brake
reservoir tank filled with brake fluid to eliminate en-
try of air.
• The brake pedal operation must be very slow.
• For convenience and safety, two people should
do the work.
• The amount of brake fluid required is approx. 500
m2 (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 de-
pressed.
7) Loosen the bleeder screw approximately 1/4
turn until a small amount of brake fluid drains into
the container, and then quickly tighten the screw.
8) Repeat steps 6) and 7) until there are no air bub-
bles in drained brake fluid and new fluid flows
(4)
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 the
brake pedal depressed and tighten the screw and
install bleeder cap.
(2)
PM-00047
Tightening torque:
10) Bleed air from each wheel cylinder by following
steps from 5) to 9).
11) Depress the brake pedal with a force of approx.
294 N (30 kgf, 66 lb) and hold it there for approx. 20
seconds. At this time check the pedal to see if it
makes any unusual movement. Visually inspect the
bleeder screws and brake pipe joints to confirm
there is no fluid leakage.
12) Install the wheels, and drive the vehicle for a
short distance between 2 to 3 km (1 to 2 miles) to
confirm brakes are operating properly.
PM-00048
PM-32
!
8 N m (0.8 kgf-m, 5.8 ft-lb)