Parking Brake - Subaru 2009 IMPREZA Service Manual

20.Parking Brake

A: INSPECTION
1. REAR DRUM BRAKE
1) Remove the brake drum and check that there is
no fluid leakage from the wheel cylinder.
If fluid leaks are found in the wheel cylinder, check
the wheel cylinder and replace it.
2) Inspect the brake shoes for damage or deforma-
tion and check the brake linings for wear.
NOTE:
• Always replace both leading and trailing brake
shoes for the left and right wheels at the same time.
• When replacing either the left or the right brake
assembly, always replace the leading shoe and the
trailing shoe of one side.
Thickness of brake lining (except for back metal):
Standard: 4.5 mm (0.177 in)
Service limit: 1.5 mm (0.059 in)
(A)
(B)
(A) Direction of drum rotation (Forward)
(B) Leading shoe
(C) Trailing shoe
Parking Brake
3) Check the brake drum for wear, dents or other
damage.
If the inside surface of the brake drum is streaked,
correct the surface with emery cloth (#200 or
more). If it is unevenly worn or tapered, or the outer
surface of the brake drum is damaged, repair or re-
place it.
Brake drum inside diameter:
Standard: 254 mm (10.000 in)
Service limit: 256 mm (10.08 in)
If the deformation or wear of back plate, shoe, etc.
is noticeable, replace problem parts.
2. PARKING BRAKE (REAR DISC BRAKE)
(C) 1) Measure the brake disc rotor inside diameter. If
the disc is scored or worn, replace the brake disc
rotor.
Disc rotor inside diameter:
PM-00407
Standard:
190 mm (7.48 in)
Service limit:
191 mm (7.52 in)
2) Measure the lining thickness. If it exceeds the
limit, replace the brake shoe.
Lining thickness:
Standard:
2.8 mm (0.11 in)
Service limit:
1.5 mm (0.059 in)
NOTE:
Replace the right and left brake shoe as a set.
PM-37
PERIODIC MAINTENANCE SERVICES
(A)
(A) Inside diameter
PM-00053