Subaru Legacy 2003 Service Manual page 2711

DIFFERENTIALS
E: INSPECTION
Wash all the disassembled parts clean, and exam-
ine them for wear, damage, or other defects. Re-
pair or replace defective parts as necessary.
1) Crown gear and drive pinion
• If abnormal tooth contact is evident, find out the
cause and adjust to give correct tooth contact at as-
sembly. Replace the gear if excessively worn or in-
capable of adjustment.
• If crack, score, or seizure is evident, replace as a
set. Slight damage of tooth can be corrected by oil
stone or the like.
2) Side gear and pinion mate gear
• Replace if crack, score, or other defects are evi-
dent on tooth surface.
• Replace if thrust washer contacting surface is
worn or seized. Slight damage of the surface can
be corrected by oil stone or the like.
3) Bearing
Replace if seizure, peeling, wear, rust, dragging
during rotation, abnormal noise or other defect is
evident.
4) Thrust washers of side gear and pinion mate
gear
Replace if seizure, flaw, abnormal wear or other
defect is evident.
5) Oil seal
Replace if deformed or damaged, and at every dis-
assembling.
6) Differential carrier
Replace if the bearing bores are worn or damaged.
7) Differential case
Replace if its sliding surfaces are worn or cracked.
8) Companion flange
Replace if the oil seal lip contacting surfaces have
flaws.
REAR DIFFERENTIAL FOR VA-TYPE
DI-56
1. SIDE GEAR BACKLASH
Using a dial gauge, check the backlash of the side
gear.
Side gear backlash:
0.05 — 0.15 mm (0.0020 — 0.0059 in)
If side gear backlash is not within the specification,
adjust clearance as specified by selecting side gear
trust washer.
2. CROWN GEAR BACKLASH
Using a dial gauge, check the backlash of the
crown gear.
Crown gear backlash:
0.10 — 0.15 mm (0.0039 — 0.0059 in)
If crown gear backlash is not within the specifica-
tion, adjust the side bearing preload or repair if nec-
essary.
DI-00286
DI-00099