Subaru IMPREZA GD 2007 Series Manual page 2619

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AUTOMATIC TRANSMISSION
13) Press the center of retaining plate by applying a
force of N using push/pull gauge, and then mea-
sure and record the height "A". Measure at three lo-
cations or more spaced by equal distances and
take the average value.
NOTE:
If measuring in three locations, measure every
120°. If measuring in four locations, measure every
90°.
A
(A) Dish plate
(B) Driven plate
(C) Drive plate
(D) Retaining plate
14) Installation of the low & reverse brake:
Install the dish plate, driven plate, drive plate and
retaining plate, and then secure them with a snap
ring.
NOTE:
Pay attention to the orientation of the dish plate.
(A) Snap ring
AT Main Case
15) Apply compressed air intermittently to check for
operation.
16) Place same thickness shims on both sides to
prevent plate from tilting, then measure and record
the clearance "B".
NOTE:
Do not push in the shim down with force to a point
where the waves on the drive plate will be crushed.
(D)
(B)
(C)
(A)
17) Piston stroke calculation
AT-01721
Calculate from the recorded dimension A and B,
and if the service limit is exceeded, replace with a
new drive plate and adjust so that it is within stan-
dard.
T = A + B
T: Piston stroke
A: Amount of drive plate compression
B: Clearance between retaining plate and snap ring
Non-turbo model:
Initial standard
2.15 — 2.65 mm (0.073 — 0.093 in)
Limit thickness
2.95 mm (0.104 in)
( A )
Turbo model:
Initial standard
2.70 — 3.20 mm (0.106 — 0.126 in)
Limit thickness
3.90 mm (0.154 in)
AT-00294
4AT-112
B
AT-00297
AT-02216