Subaru Impreza 2003, Service Manual

Page: 1640 / 3610

4AT-108
AUTOMATIC TRANSMISSION
DRIVE PINION SHAFT
D: ASSEMBLY
1) Measure dimension “A” of the drive pinion shaft.
ST
398643600 GAUGE
2) Using a press, force-fit a new roller bearing in
position.
NOTE:
If too much pressure is applied, the roller bearing
will not turn easily.
3) After fitting a new O-ring to the shaft, attach the
drive pinion collar to the shaft.
4) Install the lock washer to drive pinion shaft in
proper direction.
5) Tighten a new lock nut with ST1, ST2 and ST3.
Calculate lock washer and lock nut specifications
using the following formula.
T2 = L2/(L1 + L2)
×
T1
T1: 116 N·m (11.8 kgf-m, 85.3 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:
Install 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 out of the allowable range, replace the roll-
er bearing.
Starting torque:
7.6 — 38.1 N (0.776 — 3.88 kgf, 1.7 — 8.6 lb)
7) Stake the lock nut securely at two places.
8) Measure dimension “B” of the drive pinion shaft.
ST
398643600 GAUGE
9) The thickness “t” (mm) of the drive pinion shim.
t = 6.5
±
0.0625
−
(B
−
A)
(A) Drive pinion shaft
(B) Roller bearing
Torque wrench length
m (in)
Tightening torque
N·m (kgf-m, ft-lb)
0.4 (15.75) 98 (10.0, 72)
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)
A
AT-00200
AT-00201
(B)
(A)
ST1
AT-00202
L1 [m (in)]
L2 [m (in)]
ST2
ST3
AT-00203
B
AT-00204