Subaru 2009 IMPREZA, Service Manual

Page: 1950 / 3619

4AT-94
Drive Pinion Shaft Assembly
AUTOMATIC TRANSMISSION
D: ASSEMBLY
1) Measure the dimension “A” of drive pinion shaft.
ST
398643600 GAUGE
2) Using a press, press-fit the new roller bearing
into the specified position.
CAUTION:
Damage may result if too much force is applied
to the roller bearing.
3) After applying ATF to a new O-ring and attaching
it to the drive pinion shaft, attach the drive pinion
collar to the drive pinion shaft.
4) Install the lock washer to drive pinion shaft in the
proper direction.
5) Tighten a new lock nut using the ST.
Calculate the lock washer and lock nut specifica-
tions using following formula.
T2 = L2/(L1 + L2) × T1
T1: 116 N·m (11.8 kgf-m, 85.6 ft-lb)
[Required torque setting]
T2: Tightening torque
L1: ST2 length 0.072 m (2.83 in)
L2: Torque wrench length
Example:
ST1 498937110 HOLDER
ST2 499787700 WRENCH
ST3 499787500 ADAPTER
NOTE:
Attach ST2 to torque wrench as straight as possi-
ble.
6) Measure the starting torque of the bearing. Make
sure the starting torque is within the specified
range. If the torque is not within specified range, re-
place the roller bearing.
Starting torque:
7.6 — 38.1 N (0.775 — 3.88 kgf, 1.7 — 8.6 lb)
7) Crimp the locknut in 2 locations.
A Measured value
(A) Drive pinion shaft
(B) Roller bearing
AT-00200
A
AT-00201
(B)
(A)
Torque wrench length
m (in)
Tightening torque
N·m (kgf-m, ft-lb)
0.4 (15.75) 98 (10.0, 72.3)
0.45 (17.72) 100 (10.2, 73.8)
0.5 (19.69) 101 (10.3, 74.5)
0.55 (21.65) 102 (10.4, 75.2)
AT-00202
ST1
L1 [m (in)]
L2 [m (in)]
ST2
ST3
AT-00203