Subaru Impreza 2003, Service Manual

Page: 2535 / 3610

BR-3
BRAKE
GENERAL DESCRIPTION
[ ]: Model with ABS.
NOTE:
Refer to “PB section” for parking brake SPECIFICATIONS. <Ref. to PB-2, SPECIFICATIONS, General De-
scription.>
Propor-
tioning
valve
Split point
1,961 kPa
(20 kg/cm
2
, 285 psi)
—
Reduce ratio 0.4 —
Brake line Dual circuit system
Brake fluid
CAUTION:
• Avoid mixing brake fluid
of different brands to pre-
vent the fluid performance
from degrading.
• When brake fluid is sup-
plemented, be careful not to
allow any dust into the res-
ervoir.
• Use fresh DOT3 brake
fluid when replacing or
refilling the fluid.
FMVSS No. 116, DOT3
ITEM STANDARD SERVICE LIMIT
Front brake
Pad thickness
14
″
, 15
″
11 mm (0.43 in) 1.5 mm (0.059 in)
16
″
10 mm (0.39 in) 1.5 mm (0.059 in)
17
″
9.2 mm (0.362 in) 1.2 mm (0.047 in)
Disc thickness
Except
17
″
24 mm (0.94 in) 22 mm (0.87 in)
17
″
30 mm (1.18 in) 28 mm (1.10 in)
Disc runout — 0.075 mm (0.0030 in)
Rear brake (Disc type)
Pad thickness
14
″
9.0 mm (0.354 in) 1.5 mm (0.059 in)
15
″
11.5 mm (0.452 in) 1.5 mm (0.059 in)
17
″
9.0 mm (0.354 in) 1.2 mm (0.047 in)
Disc thickness
14
″
10 mm (0.39 in) 8.5 mm (0.335 in)
15
″
18 mm (0.71 in) 16 mm (0.63 in)
17
″
20 mm (0.79 in) 18 mm (0.71 in)
Disc runout — 0.07 mm (0.0028 in)
Rear brake (Drum type)
Inside diameter 228.6 mm (9 in) 230.6 mm (9.08 in)
Lining thickness 4.1 mm (0.161 in) 1.5 mm (0.059 in)
Rear brake (Disc type
parking)
Inside diameter 170 mm (6.69 in) 171 mm (6.73 in)
Lining thickness 3.2 mm (0.126 in) 1.5 mm (0.059 in)
Parking brake Lever stroke 7 to 8 notches/196 N (20 kgf, 44 lb)
Model BASE, TS GX, RS, OBK WRX STi