Subaru LEGACY 2004 Service Manual page 114

DIFFERENTIALS
If the side gear backlash is not within the specifica-
tion, adjust it as specified by selecting side gear
thrust washer.
2. HYPOID DRIVEN GEAR BACKLASH
Using a dial gauge, check the backlash of hypoid
driven gear.
Hypoid driven gear backlash:
0.1 — 0.2 mm (0.004 — 0.008 in)
If the hypoid driven gear backlash is not within the
specification, adjust the side bearing preload or re-
pair if necessary.
3. HYPOID DRIVEN GEAR RUNOUT ON ITS
BACK SURFACE
Using a dial gauge, check the hypoid driven gear
runout on its back surface.
Hypoid driven gear runout on its back surface:
0.05 mm (0.0020 in)
If the hypoid driven gear runout exceeds 0.05 mm
(0.0020 in), replace the hypoid driven gear.
Rear Differential (T-type)
4. TOOTH CONTACT BETWEEN HYPOID
DRIVEN GEAR AND DRIVE PINION
Inspect the tooth contact between hypoid driven
gear and drive pinion. <Ref. to DI-35, ASSEMBLY,
Rear Differential (T-type).>
5. TOTAL PRELOAD
Using a spring balance, check the total preload.
Total preload:
20.7 — 54.4 N (2.1 — 5.5 kgf, 4.7 — 12.2 lb)
If the total preload is not within the specification,
adjust the side bearing retainer shims.
DI-00315
6. COMPANION FLANGE
1) If rust or dirt is attached to the companion flange,
remove them.
2) Set a dial gauge at a companion flange surface
(mating surface of propeller shaft and companion
flange), and then measure the companion flange
runout.
Limit of runout:
DI-00099
0.08 mm (0.0031 in)
DI-00101
DI-44
DI-00117
DI-00360