Subaru IMPREZA GD 2007 Series Manual page 2631

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AUTOMATIC TRANSMISSION
(5) Using the following formula, read the push/
pull gauge, and calculate N.
N = 150 N (15.3 kgf, 33.7 lbf) – Z
N: Value indicated on push/pull gauge
150 N (15.3 kgf, 33.7 lbf): Load applied to the
clutch plate
Z: Flat board weight
(6) Press the center of retaining plate by apply-
ing a force of N using push/pull gauge, and then
measure and record the height "A". Measure at
three locations or more spaced by equal dis-
tances and take the average value.
NOTE:
If measuring in three locations, measure every
120°. If measuring in four locations, measure every
90°.
A
(A) Driven plate
(B) Drive plate
(C) Retaining plate
(7) Install the driven plate, drive plate, retaining
plate and snap ring.
AT Main Case
(8) Apply compressed air intermittently to check
for operation.
15) Check the piston stroke.
(1) Measure clearance "B" between the retain-
ing plate and snap ring. (Reverse clutch)
At this time, do not press down the retaining
plate.
B
(A) Thickness gauge
(2) Piston stroke calculation
(C)
Calculate from the recorded dimension A and
B, and if the service limit is exceeded, replace
(B)
the drive plate and adjust so that it is within
(A)
standard.
T = A + B
T: Piston stroke
AT-01727
A: Amount of drive plate compression
B: Clearance between retaining plate and snap
ring
Initial standard:
1.1 — 1.4 mm (0.043 — 0.055 in)
Limit thickness:
1.6 mm (0.063 in)
AT-00247
4AT-124
AT-00248
(A)
AT-01728