Subaru 2009 IMPREZA Service Manual page 1976

AUTOMATIC TRANSMISSION
(6) Press the center of retaining plate with a
force of N using a push/pull gauge, and mea-
sure and record height "A". Measure at three or
more locations 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 Measured value
(A) Driven plate
(B) Drive plate
(C) Retaining plate
9) Install the thickest driven plate to piston side,
and then install the driven plate, drive plate, retain-
ing plate to high clutch drum.
10) Install the snap ring to high clutch drum.
AT Main Case
11) Apply compressed air intermittently to check for
operation.
12) Check the piston stroke. (Non-turbo model)
(1) Measure clearance "B" between the retain-
ing plate and snap ring. (High clutch) At this
time, do not press down the retaining plate.
(C)
(B)
(A)
AT-01725
AT-00245
4AT-120
(A)
B
B Measured value
(A) Thickness gauge
AT-00246
AT-01726