Subaru Impreza 2003 Service Manual page 2232

DIFFERENTIALS
2. CROWN GEAR BACKLASH
Using a dial gauge, check the backlash of the
crown gear.
Crown gear backlash:
0.1 — 0.2 mm (0.004 — 0.008 in)
If the crown gear backlash is not within the specifi-
cation, adjust the side bearing preload or repair if
necessary.
3. CROWN GEAR RUNOUT
Using a dial gauge, check the crown gear runout.
Crown gear runout:
Less than 0.05 mm (0.0020 in)
If the crown gear runout exceeds 0.05 mm (0.0020
in), replace the crown gear.
REAR DIFFERENTIAL FOR T-TYPE
DI-00099
DI-00101
DI-52
4. TOOTH CONTACT BETWEEN CROWN
GEAR AND DRIVE PINION
Inspect the tooth contact between crown gear and
driven pinion. <Ref. to DI-35, ASSEMBLY, Rear
Differential for T-type.>
5. TOTAL PRELOAD
Using a gauge, check the turning resistance in-
crease.
Total preload:
Except for STi model:
20.7 — 54.4 N (2.1 — 5.5 kgf, 4.7 — 12.2 lb)
STi model:
28.5 — 57.0 N (2.9 — 5.8 kgf, 6.4 — 12.8 lb)
If the total preload is not within the specification,
adjust the side bearing retainer shims.
F: ADJUSTMENT
1. SIDE GEAR BACKLASH
Adjust the side gear backlash. <Ref. to DI-35, AS-
SEMBLY, Rear Differential for T-type.>
2. CROWN GEAR BACKLASH
Adjust the crown gear backlash. <Ref. to DI-35,
ASSEMBLY, Rear Differential for T-type.>
3. TOOTH CONTACT BETWEEN CROWN
GEAR AND DRIVE PINION
Adjust the tooth contact between crown gear and
drive pinion gear. <Ref. to DI-35, ASSEMBLY,
Rear Differential for T-type.>
4. TOTAL PRELOAD
Adjust the side bearing shim. <Ref. to DI-35, AS-
SEMBLY, Rear Differential for T-type.>
DI-00117