Subaru Legacy (2005 year). Service manual — part 536

4AT-125

AUTOMATIC TRANSMISSION

AT Main Case

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
places or more in even distance and take the aver-
age value.

NOTE:
If three places, measure in every 120

°. If four plac-

es, measure in every 90

°.

14) Installation of the low & reverse brake
Install the dish plate, driven plate and retaining
plate, and then secure them with snap ring.

NOTE:
Pay attention to the orientation of dish plate.

15) Apply compressed air intermittently to check for
operation.

16) Place the same thickness of shim on both sides
to prevent plate from tilting, measure and record
the clearance B.

NOTE:
Do not press the shim downward with excessive
force, otherwise the waveform of drive plates will
be broken down.

17) Piston stroke calculation
Select the retaining plate within the specification by
calculating with A and B dimensions recorded be-
fore. If the calculated value exceeds the service
limit, replace the drive plate with a new one and ad-
just it within the specification.
T = A + B
T: Piston stroke
A: Collapse amount of drive plate
B: Clearance between retaining plate and snap ring

Initial specification:

2.15 — 2.65 mm (0.085 — 0.104 in)

Service limit:

2.95 mm (0.116 in)

(A) Dish plate

(B) Driven plate

(C) Drive plate

(D) Retaining plate

(A) Snap ring

AT-01721

(B)

(D)

(C)

(A)

A

AT-00294

( A )

AT-00297

AT-02216

B

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18) Install the leaf spring of low & reverse brake.

19) Install the 2-4 brake piston and 2-4 brake re-
tainer by aligning the holes of 2-4 brake retainer
and hole of transmission case.

20) Install 2-4 brake piston return spring to trans-
mission case.

21) Position the snap ring in transmission. Using
the ST, press-fit the snap ring into specified place.
ST

498677100

COMPRESSOR

22) Install the planetary gear and low clutch as-
sembly to transmission case.
Install carefully while rotating the low clutch and
planetary gear assembly slowly paying special at-
tention not to damage the seal ring.

23) Place the dish plate, driven plate, drive plate
and retaining plate neatly in this order on surface
table.
24) Set the dial gauge to clutch, and read its scale.

NOTE:
The value, which is read in the gauge at this time, is
zero point.
25) Scale and record the weight “Z” of a flat board
which will be put on 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 of its weight less than 10.2 kg
(22.5 lb).

Retaining plate

Part No.

Thickness mm (in)

31667AA420

3.8 (0.150)

31667AA320

4.1 (0.161)

31667AA330

4.4 (0.173)

31667AA340

4.7 (0.185)

31667AA350

5.0 (0.197)

31667AA360

5.3 (0.209)

31667AA370

5.6 (0.220)

31667AA380

5.9 (0.232)

(A) Leaf spring

(A) 2-4 brake piston

(B) 2-4 brake piston retainer

AT-00293

(A)

AT-00287

(A)

(B)

AT-00286

AT-00289

S T

AT-00255

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26) Put the flat board weighed on retaining plate.

27) Using the following formula, calculate “N” indi-
cated on the push/pull gauge.
N = 100 N (10.2 kgf, 22.5 lbf)

− Z

N: Value indicated on push/pull gauge
100 N (10.2 kgf, 22.5 lbf): Load applied to clutch
plate
Z: Flat board weight
28) 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
places or more in even distance and take the aver-
age value.

NOTE:
If three places, measure in every 120

°. If four plac-

es, measure in every 90

°.

29) Install the pressure plate, drive plate, driven
plate, retaining plate and snap ring.

30) Install a new 2-4 brake oil seal to transmission
case.

31) After all 2-4 brake component parts have been
installed, blow in air intermittently and confirm the
operation of brake.

32) Measure the clearance B between retaining
plate and snap ring.

(A) Driven plate

(B) Drive plate

(C) Retaining plate

AT-01720

AT-01723

(C)

(B)

(A)

A

AT-00254

AT-02215

AT-00290

AT-01724

B

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33) Piston stroke calculation
Select the retaining plate within the specification by
calculating with A and B dimensions recorded be-
fore. If the calculated value exceeds the service
limit, replace the drive plate with a new one and ad-
just it within the specification.
T = A + B
T: Piston stroke
A: Collapse amount of drive plate
B: Clearance between retaining plate and snap ring

2.0 L SOHC model:

Initial specification

1.4 — 1.8 mm (0.055 — 0.071 in)

Service limit

1.95 mm (0.077 in)

Except for 2.0 L SOHC model:

Initial specification

1.7 — 2.1 mm (0.067 — 0.083 in)

Service limit

2.3 mm (0.091 in)

34) Be careful not to mistake the location of the leaf
spring to be inserted.

35) Install the thrust needle bearing in correct di-
rection.

36) Install the front sun gear and thrust needle
bearing.

37) Install the high clutch hub.
Attach the thrust needle bearing to hub using vase-
line, and then install the hub by correctly engaging
the splines of the front planetary carrier.

Retaining plate

Part No.

Thickness mm (in)

31567AA991

5.6 (0.220)

31567AB001

5.8 (0.228)

31567AB011

6.0 (0.236)

31567AB021

6.2 (0.244)

31567AB031

6.4 (0.252)

31567AB041

6.6 (0.260)

(A) Leaf spring

(B) Retaining plate

AT-00252

(A)

(B)

(A) Snap ring

(B) Thrust needle bearing

(C) Upside

(D) Downside

(E) Outside

(A) Front sun gear

(B) Thrust needle bearing

(C) Upside

(D) Downside

(E) Outside

AT-02217

(A)

(B)

(C)

(D)

(E)

AT-02218

(A)

(B)

(C)

(D)

(E)