Subaru IMPREZA 2004 Service Manual page 15

E: INSPECTION
Disassembled parts should be washed clean first
and then inspected carefully.
1) Bearing
Replace the bearings in the following cases.
• Worn, rusted and damaged bearing
• Bearings that fail to turn smoothly or make ab-
normal noise when turned
• Bearings having other defects
2) Bushing (each gear)
Replace the bushings in the following case.
• When the sliding surface is damaged or abnor-
mally worn.
3) Gears
Replace the gears in the following cases.
• Gear teeth surfaces are broken or excessively
worn.
• Parts that contact the baulk ring is damaged.
• The inner surface of gear is damaged.
4) Baulk ring, synchro cone
Replace the baulk ring and synchro cone in the fol-
lowing case.
• Worn, rusted and damaged baulk ring
5) Shifting insert key
Replace the shifting insert key if deformed, exces-
sively worn or defective in any way.
F: ADJUSTMENT
1. SELECTION OF MAIN SHAFT SNAP
RING AND WASHER
NOTE:
Perform the following procedures when.
• Replacing the 1st to 6th driven gear.
• Replacing the 1st and 2nd synchro ring assem-
bly.
• Replacing the ball bearing.
• Replacing the adapter plate.
• Replacing the driven shaft.
1) Insert the drive pinion assembly in adapter plate.
NOTE:
Make sure the thrust bearing outer race is not re-
moved and drive pinion is not lift-up.
Main Shaft Assembly
2) Set the height gauge to adapter plate. Lower the
indicator of height gauge to mating surface of
adapter plate and case, then set to zero point.
ST 18853AA000 HEIGHT GAUGE
NOTE:
• Remove the remaining gasket on edge surface
with scraper, since the adapter plate is base point
of measurement.
• Do not place the height gauge on shaded area in
the figure during measurement.
MT-00581
6MT-83
MANUAL TRANSMISSION AND DIFFERENTIAL
ST
MT-00582
MT-00583