Subaru 2009 IMPREZA, Service Manual

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BR-2
General Description
BRAKE
1. General Description
A: SPECIFICATION
Model 2.5 i OUTBACK WRX
Front disc
brake
Size 15-inch type 16-inch type
Type Disc (Floating type, ventilated)
Effective disc diameter mm (in) 228 (8.98) 244 (9.61)
Disc thickness × Diameter mm (in) 24 × 277 (0.94 × 10.91) 24 × 294 (0.94 × 11.57)
Effective cylinder diameter mm (in) 42.8 (1.685) × 2
Pad dimensions
(Length × Width × Thickness)
mm (in) 117.8 × 50.5 × 11.0 (4.638 × 1.988 × 0.433)
Clearance adjustment Automatic adjustment
Rear disc
brake
Size — 15-inch type
Type — Disc (Floating type, solid)
Effective disc diameter mm (in) — 250 (9.84)
Disc thickness × Diameter mm (in) — 10 × 286 (0.39 × 11.26)
Effective cylinder diameter mm (in) — 38.1 (1.500)
Pad dimensions
(Length × Width × Thickness)
mm (in) — 92.0 × 33.0 × 9.0 (3.622 × 1.299 × 0.354)
Clearance adjustment — Automatic adjustment
Rear
drum
brake
Type
Drum
(Leading/Trailing type)
— —
Effective drum inner diameter mm (in) 254 (10) — —
Effective cylinder diameter mm (in) 19 (0.75) — —
Lining dimensions
(Length × Width × Thickness)
mm (in)
243.8 × 40.0 × 4.5
(9.6 × 1.575 × 0.177)
— —
Clearance adjustment Automatic adjustment — —
Master
cylinder
Type Tandem
Effective diameter mm (in) 23.8 (15/16)
Reservoir type Sealed type
Brake fluid
reservoir capacity cm
3
(cu in)
205 (12.51)
Brake
booster
Type Vacuum suspended
Effective diameter mm (in) 208 + 229 (8.19 + 9.02)
Brake line Dual circuit system
Brake fluid
CAUTION:
• Avoid mixing brake fluid of different brands to
prevent fluid performance from degrading.
• When filling with brake fluid, be careful not to al-
low any dust to enter the reservoir.
• Use new SUBARU genuine brake fluid when re-
placing or refilling the fluid.
FMVSS No. 116, DOT3, or DOT4