Subaru 2009 IMPREZA Service Manual page 1964

AUTOMATIC TRANSMISSION
B: INSTALLATION
1) Apply ATF to the lip, and install the low & reverse
brake piston.
NOTE:
Take care not to damage the lip seal.
2) Install the return spring.
3) Install the spring retainer.
4) Install the one-way clutch inner race.
5) Tighten the socket head bolts evenly from the
rear side of transmission case.
Tightening torque:
25 N·m (2.5 kgf-m, 18.4 ft-lb)
AT Main Case
6) Place the front side of transmission body up.
7) Install the thrust needle bearing.
8) Place the dish plate, driven plate, drive plate and
retaining plate neatly in this order on surface table.
9) Set the dial gauge to retaining plate, and read its
scale.
NOTE:
The value, which is read in the gauge at this time, is
zero point.
10) Scale and record the weight "Z" of the flat board
that will be placed on the retaining plate.
NOTE:
• Use a stiff board which does not bend against
load as a flat board to be put on retaining plate.
• Use a flat board weighing less than 8.5 kgf (18.7
AT-00300
lb).
11) Put the flat board on retaining plate.
AT-00301
12) Using the following formula, read the push/pull
gauge, and calculate "N".
N = 83 N (8.5 kgf, 18.7 lb) – Z
N: Value indicated on push/pull gauge
83 N (8.5 kgf, 18.7 lb) : Load applied to clutch plate
Z: Flat board weight
AT-00302
AT-00296
4AT-108
AT-01720