Subaru IMPREZA GD 2007 Series Manual page 3248

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8. Master Cylinder
A: REMOVAL
CAUTION:
Do not allow brake fluid to come in contact with
vehicle body. If it does, wash off with water and
wipe away completely.
1) Drain brake fluid from reservoir tank completely.
2) Disconnect the harness connector of the fluid
level gauge.
3) Remove the brake pipes from master cylinder.
4) Remove the master cylinder mounting nuts, and
remove the master cylinder from the brake booster.
B: INSTALLATION
1) Install in the reverse order of removal.
Tightening torque:
Master cylinder mounting nut
15 N·m (1.5 kgf-m, 10.8 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 brake system. <Ref. to BR-47,
PROCEDURE, Air Bleeding.>
C: DISASSEMBLY
1) Remove mud and dirt from the surface of brake
master cylinder.
2) Secure the master cylinder in a vise.
3) Remove the pin which secures the master cylin-
der and reservoir tank, then remove the reservoir
tank and grommet.
4) Remove the cylinder pin with magnetic pick-up
tool while pushing in the primary piston by screw-
driver wrapped with tape.
(1)
(1) Cylinder pin (straight pin)
Master Cylinder
5) Raise the claw and remove the piston retainer.
Hold the piston retainer while working, because the
piston may fly out with force.
6) Extract the primary piston assembly and sec-
ondary piston assembly straight out while taking
care not to scratch the inner surface of the cylinder.
7) Clean the inside of master cylinder and the pis-
ton assembly with brake fluid, and check each part
for damage, deformation, wear or rust. Replace the
part if defective.
D: ASSEMBLY
1) Apply brake fluid to the inner surface of master
cylinder and piston assembly.
2) Make sure that the inner surface of master cylin-
der and the piston assembly are free of foreign
matter. Install the primary piston assembly and the
secondary piston assembly to master cylinder,
while taking care not to scratch the master cylinder
inner surface.
3) Install the cylinder pin while pushing in the pri-
mary piston by screwdriver wrapped with tape.
4) Install the piston retainer and secure it with the
claw.
BR-00069
BR-39
BRAKE
BR-00070
BR-00070