Subaru 2009 IMPREZA, Service Manual

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BR-31
Master Cylinder
BRAKE
7) Clean the inside of master cylinder with brake
fluid. Check the inside of the cylinder for damage,
deformation and wear. Replace the master cylinder
as an assembly if faulty.
8) Apply brake fluid to the inner surface of master
cylinder and piston assembly.
9) 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.
10) While pushing-in the primary piston, install the
cylinder pin.
11) While pushing-in the primary piston, install the
C-ring to the groove using pliers.
CAUTION:
Make sure the C-ring is installed to the groove
securely.
12) Install the seal to reservoir tank.
13) Install the reservoir tank to the master cylinder,
and secure with pin.
14) Replace the O-ring for the master cylinder with
a new part.
D: INSPECTION
Inspect for brake fluid leakage from the master cyl-
inder.
NOTE:
After replacing the piston kit, if an brake fluid leak-
age is found even though there is no damage or
scratches on the inside of the cylinder, the master
cylinder inner wall may be worn. In this case, re-
place the master cylinder as an assembly.
(1) Seal
BR-00169
BR-00072
(1)
(1) Primary piston
(2) O-ring
(3) Do not install the O-ring on this groove.
BR-00363
(1)
(2)
(3)