Subaru 2009 IMPREZA, Service Manual

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5MT-56
Main Shaft Assembly for Single-Range
MANUAL TRANSMISSION AND DIFFERENTIAL
4) Baulk ring
Replace the baulk 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.
• When the contact surface of the synchronizer
ring insert section is cracked or abnormally worn.
• If the gap between the end faces of the ring and
the gear splined part is excessively small, check
the clearance (A) while pressing the ring against
the cone.
Clearance (A):
0.5 mm (0.020 in) or more
5) Shifting insert key
Replace the insert key if deformed, excessively
worn or defective in any way.
6) Oil seal
Replace the oil seal if the lip is deformed, hard-
ened, 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.
8) Gearshift mechanism
Repair or replace the gearshift mechanism if ex-
cessively worn, bent or defective in any way.
F: ADJUSTMENT
Selection of main shaft rear plate:
Using the ST, measure the protrusion amount (A)
of ball bearing from transmission main case sur-
face, and select a suitable plate in the following ta-
ble.
NOTE:
Before measuring, tap the end of main shaft with a
plastic hammer lightly in order to make the clear-
ance zero between the main case surface and
moving flange of bearing.
ST
498147001 DEPTH GAUGE
• Non-turbo model
• Turbo model
(A) Measured value
MT-01674
(A)
Dimension (A)
mm (in)
Part No. Mark
4.00 — 4.13
(0.1575 — 0.1626)
32294AA041 1
3.87 — 4.00
(0.1524 — 0.1575)
32294AA051 2
(A) Measured value
(A) Measured value
MT-00209
(A)
MT-01807
(A)