Subaru 2002 IMPREZA Service Manual page 1816

MANUAL TRANSMISSION AND DIFFERENTIAL
E: INSPECTION
Disassembled parts should be washed clean first
and then inspected carefully.
1) Bearings
Replace the bearings in the following cases:
• Bearings whose balls, outer races and inner rac-
es are broken or rusty.
• Worn bearings
• Bearings that fail to turn smoothly or make ab-
normal noise when turned after gear oil lubrication.
• The ball bearing on the rear side of the drive pin-
ion shaft should be checked for smooth rotation be-
fore the drive pinion assembly is disassembled. In
this case, because a preload is working on the
bearing, its rotation feels like it is slightly dragging
unlike the other bearings.
(A) Drive pinion shaft
(B) Ball bearing
• Bearings having other defects
2) Bushing (each gear)
Replace the bushing in the following cases:
• When the sliding surface is damaged or abnor-
mally worn.
• When the inner wall is abnormally worn.
3) Gears
• Replace the gears with new ones if their tooth
surfaces are broken, damaged, or excessively
worn.
• Correct or replace if the cone that contacts the
baulk ring is rough or damaged.
• Correct or replace if the inner surface or end face
is damaged.
DRIVE PINION SHAFT ASSEMBLY
B3M0038E
MT-92
4) Baulk ring
Replace the ring in the following cases:
• When the inner surface and end face are dam-
aged.
• When the ring inner surface is abnormally or par-
tially worn down.
• If the gap between the end faces of the ring and
the gear splined part is excessively small when the
ring is pressed against the cone.
Clearance (A):
0.5 — 1.0 mm (0.020 — 0.040 in)
• When the contact surface of the synchronizer
ring insert is scored or abnormally worn down.
5) Shifting insert key
Replace the insert if deformed, excessively worn,
or defective in any way.
6) Oil seal
Replace the oil seal if the lip is deformed, hard-
ened, damaged, worn, or defective in any way.
7) O-ring
Replace the O-ring if the sealing face is deformed,
hardened, damaged, worn, or defective in any way.
S3M0188A
S3M0189