Subaru 2002 Impreza Service Manual page 343

PARKING BRAKE (REAR DRUM BRAKES)
Parking Brake
2. Parking Brake (Rear Drum Brakes)
When the parking brake lever is moved up, the parking lever in each rear drum brake moves
around point "A" so that the trailing shoe expands. The leading
shoe
also expands by way of the
adjuster assembly. The shoes are thus pressed against the drum to generate a wheel locking
force.
(1) Wheel cylinder
(2) Upper shoe return spring
(3) Point"A
(4) Adjuster lever
(5) Trailing shoe
(6) Leading shoe
NFO109
Lower shoe return spring
Adjuster assembly
Parking lever
Automatic brake lining clearance adjustment mechanism
Parking brake mechanism
P B-5