Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 440
6MT-97
Drive Pinion Shaft Assembly
MANUAL TRANSMISSION AND DIFFERENTIAL
8) Using the ST, measure drive pinion measure-
ment B.
ST 398643600
GAUGE
9) Calculate from the calculation below to select 1
or 2 drive pinion shims from the following table.
6.5±0.0625 mm – (B – A) [0.26±0.0025 in – (B – A)]
NOTE:
A: Measurement value in step 1)
B: Measurement value in step 8)
10) Apply transmission gear oil to the side face of
the taper roller bearing, and attach the drive pinion
shaft and the selected shims to the adapter plate.
Tightening torque:
54 N·m (5.5 kgf-m, 39.8 ft-lb)
11) Install the oil guide A.
Tightening torque:
18 N·m (1.8 kgf-m, 13.3 ft-lb)
E: INSPECTION
1) Using a spring scale, measure the starting
torque. If the starting torque is outside the specifi-
cation range, replace the taper roller bearing.
Starting torque:
0 — 0.95 N (0 — 0.097 kgf, 0 — 0.21 lbf)
2) Gear
Replace gears in the following cases.
• The gear teeth surface is damaged or excessive-
ly worn.
3) Bearing
Replace the bearings in the following cases.
• Wear, rusting or damage of the bearings
• The bearing does not rotate smoothly or an ab-
normal noise is emitted when turning.
4) Adapter plate
Replace the adapter plate in the following cases:
• Wear, rusting or damage of the bearings
• Damage of the adapter plate
5) Check that the pipes and pipe chambers are not
damaged or clogged. Repair or replace if damaged
or clogged.
Drive pinion shim
Part No.
Thickness mm (in)
32295AA270
0.15 (0.0059)
32295AA280
0.175 (0.0069)
32295AA290
0.20 (0.0079)
32295AA300
0.225 (0.0089)
32295AA310
0.25 (0.0098)
32295AA320
0.275 (0.0108)
MT-00650
B
ST
MT-00642
(A) Oil guide A
MT-01624
(A)
MT-00651