Subaru 2004 Impreza Service Manual page 30

CAUTION:
• Face 5th driven gear in the correct direction.
• Be careful not to dislocate woodruff key while
installing 5th driven gear.
(A) Rear
11) Install lock washer and tighten lock nut to the
specified torque using ST1 and ST2.
ST1 49987100 or 499987003 or 899984103
SOCKETWRENCH (35)
ST2 899884100 HOLDER
CAUTION:
• Discard old lock nuts, replace with new ones.
• Secure lock nut in four places.
Tightening torque:
120 N·m (12.2 kgf-m, 88.5 ft-lb)
ST2
ST1
Drive Pinion Shaft Assembly
ST
MT-00834
(A)
MT-00835
MT-00822
5MT-99
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)
(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.
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.
(B)
MT-00264