Subaru Impreza 2003 Service Manual page 2585

11.Master Cylinder
A: REMOVAL
CAUTION:
Do not allow brake fluid to come in contact with
vehicle body; wash away with water and wipe
off completely if spilled.
1) Thoroughly drain brake fluid from reservoir tank.
2) Disconnect the fluid level indicator harness con-
nector.
3) Remove the brake pipes from master cylinder.
4) Remove the master cylinder mounting nuts, and
take out master cylinder from brake booster.
B: INSTALLATION
1) To install the master cylinder to body, reverse
the sequence of removal procedure.
Tightening torque:
Master cylinder mounting nut
14 N·m (1.4 kgf-m, 10.1 ft-lb)
Piping flare nut
15 N·m (1.5 kgf-m, 10.8 ft-lb)
CAUTION:
Be sure to use recommended brake fluid.
2) Bleed air from the brake system. <Ref. to BR-63,
PROCEDURE, Air Bleeding.>
C: DISASSEMBLY
1) Remove mud and dirt from the surface of brake
master cylinder.
2) Secure the master cylinder on a vise.
3) Remove the pin which secures reservoir tank to
master cylinder, and then remove the reservoir
tank and grommet.
4) Remove the cylinder pin with magnetic pick-up
tool while pushing in primary piston by screwdriver
which wrapped with tape. (Model with ABS)
(1)
(1) Cylinder pin (straight pin)
MASTER CYLINDER
5) Pry up the pawl, and then remove the piston re-
tainer. Hold piston retainer tight, because the pis-
ton may jump out from master cylinder.
6) Extract the primary piston assembly and sec-
ondary piston assembly straight out, while taking
care not to scratch the inner surface of cylinder.
7) Use brake fluid to wash the inside wall of cylin-
der, and piston assembly. If any damage, deforma-
tion, wear, rust, and other faults are found, replace
the faulty part.
D: ASSEMBLY
1) Apply recommended brake fluid to the inside
wall of cylinder, and to outer surface of the piston
assembly.
2) Ensure that the inside wall of cylinder, and piston
assembly are free from dirt when assembling. In-
stall the primary piston assembly and secondary
piston assembly, while taking care not to damage,
scratch, or dent the cylinder inside wall, and piston
assembly.
3) Install the cylinder pin while pushing in primary
piston by screwdriver which wrapped with tape.
(Model with ABS)
4) Install the piston retainer, and then secure it by
pressing the pawl.
BR-00069
BR-53
BRAKE
BR-00070
BR-00070