Subaru Impreza 2002 Service Manual page 770

21.Disc Brake Pads and Discs
A: INSPECTION
1. DISC BRAKE PAD AND DISC
1) Jack-up the vehicle and support with rigid racks.
Then remove the wheels.
2) Visually check the pad thickness through inspec-
tion hole of disc brake assembly. Replace the pad if
necessary.
• Non-turbo MODEL
Pad thickness including back metal
Standard
Service limit
• Turbo MODEL
Pad thickness including back metal
Standard
Service limit
DISC BRAKE PADS AND DISCS
GI0056A
mm (in)
Front Rear
17 (0.67) 14 (0.55)
7.5 (0.295) 6.5 (0.256)
Inspection
hole
GI0146
mm (in)
Front Rear
14.5 (0.570) 16 (0.629)
6.0 (0.236) 6.0 (0.236)
GI0057A
PERIODIC MAINTENANCE SERVICES
3) Check the disc rotor, and correct or replace if it is
damaged or worn.
• Non-turbo MODEL
Standard
Wear limit
• Turbo MODEL
Standard
Wear limit
4) Measure the disc rotor runout at a point less than
5 mm (0.20 in) from the outer periphery of the rotor.
Disc rotor runout limit:
Front: 0.070 mm (0.0028 in)
Rear: 0.075 mm (0.0030 in)
NOTE:
When replacing a pad, always replace the pads for
both the right and left wheels at the same time. Also
replace the pad clips if they are twisted or worn.
PM-33
Brake disc thickness
Front
24 (0.94) 10 (0.39)
22 (0.87) 8.5 (0.335)
Brake disc thickness
Front
24 (0.94) 18 (0.71)
22 (0.87) 16 (0.63)
mm (in)
Rear
mm (in)
Rear
GI0147