AT Main Case: Installation

Install the low and reverse piston without tilting.
NOTE: Be careful not to damage the lip seal.

Fig 1: Installing Low And Reverse Piston Without Tilting
Courtesy of SUBARU OF AMERICA, INC.
Install the return spring.

Fig 2: Installing Return Spring
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Install the spring retainer.

Fig 3: Installing Spring Retainer
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Install the one-way clutch inner race, spring retainer and return spring.
Tighten the socket head bolts evenly from the rear side of transmission case.
Tightening torque:

25 N.m (2.5 kgf-m, 18.1 ft-lb)

Fig 4: Tightening Socket Head Bolts From Rear Side Of Transmission Case
Courtesy of SUBARU OF AMERICA, INC.
Place the front side of transmission body upward.
Install thrust needle bearing.
Place dish plate, driven plate, and retaining plate on a surface plate in order.
Set the micro gauge to clutch, and read its scale.
NOTE: The value, which is read in the gauge at this time, is zero point.
Scale and record the weight "Z" of a flat board which will be put on plates.
NOTE:
- Use a stiff flat board which does not bend against load.
- Use a flat board of its weight less than 83 N (8.5 kgf, 18.7 lb).
Put the flat board on retaining plate.

Fig 5: Putting Flat Board On Retaining Plate
Courtesy of SUBARU OF AMERICA, INC.
Using the following formula, calculate "N" indicated on the push/pull gauge.
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
Press the center of retaining plate applying force of N with push/pull gauge, and then measure and record the height A. Make more than three measurements at even distance and take the average value.
NOTE: If three points, measure the height every 120°. If four points, measure the height every 90°.

Fig 6: Measuring Height Every 120°
Courtesy of SUBARU OF AMERICA, INC.
Installation of the low & reverse brake: Install dish plate, driven plates, drive plates, and a retaining plate, and secure with a snap ring.
NOTE: Pay attention to the orientation of the dish plate.

Fig 7: Installing Dish Plate, Driven Plates, Drive Plates, And Retaining Plate
Courtesy of SUBARU OF AMERICA, INC.
Apply compressed air intermittently to check for operation.

Fig 8: Applying Compressed Air Intermittently To Check For Operation
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Measure the clearance. Place the same thickness of shim on both sides to prevent the retaining plate from tilting.

Fig 9: Measuring Clearance
Courtesy of SUBARU OF AMERICA, INC.

Calculation of piston stroke Calculate piston stroke from the recorded measurement A and B, and select the retaining plate so that the piston stroke is within the standard value. If the value from the equation exceeds the service limit, replace the drive plate with new one and adjust it to be within the standard.

T = A + C

T: Piston stroke

A: Amount of the flattened drive plate

B: Clearance between the retaining plate and the snap ring

TURBO model

Standard value:

2.7 - 3.2 mm (0.106 - 0.126 in)

Limit value:

3.9 mm (0.154 in)

NON-TURBO model

Standard value:

2.4 - 2.9 mm (0.094 - 0.114 in)

Limit value:

3.6 mm (0.142 in)

RETAINING PLATES THICKNESS SPECIFICATION

Retaining plates
Part No.	Thickness mm (in)
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)

Install the low & reverse brake leaf spring.

Fig 10: Installing Low & Reverse Brake Leaf Spring
Courtesy of SUBARU OF AMERICA, INC.
Install the 2-4 brake piston and 2-4 brake retainer by aligning the hole of 2-4 brake retainer and the hole of transmission case.

Fig 11: Installing 2-4 Brake Piston And 2-4 Brake Retainer
Courtesy of SUBARU OF AMERICA, INC.
Install the 2-4 brake piston return spring to transmission case.

Fig 12: Installing 2-4 Brake Piston Return Spring To Transmission Case
Courtesy of SUBARU OF AMERICA, INC.
Position the snap ring in transmission. Using ST, press the snap ring into place.
ST 498677100 COMPRESSOR

Fig 13: Installing Snap Ring Using Compressor ST498677100
Courtesy of SUBARU OF AMERICA, INC.
Install the planetary gear and low clutch assembly to transmission case.
Install carefully while rotating the low clutch and planetary gear assembly slowly paying special attention not to damage the seal ring.

Fig 14: Installing Planetary Gear And Low Clutch Assembly To Transmission Case
Courtesy of SUBARU OF AMERICA, INC.
Install pressure plate, drive plate, driven plate, retaining plate and snap ring.

Fig 15: Installing Pressure Plate, Drive Plate, Driven Plate, Retaining Plate And Snap Ring
Courtesy of SUBARU OF AMERICA, INC.
Install a new 2-4 brake oil seal to transmission case.

Fig 16: Installing New 2-4 Brake Oil Seal To Transmission Case
Courtesy of SUBARU OF AMERICA, INC.
After all 2-4 brake component parts have been installed, blow in air intermittently and confirm the operation of the brake.

Fig 17: Applying Air Intermittently And Confirm Operation Of Brake
Courtesy of SUBARU OF AMERICA, INC.

Check the clearance between the retaining plate and the snap ring.

NOTE: Select a retaining plate with a suitable value from the following table, so that the clearance becomes the standard value.

If the clearance is above the limit, replace the drive plate with new one and adjust so that the clearance becomes the standard value.

Standard value:

0.8 - 1.2 mm (0.031 - 0.047 in)

Allowable limit:

1.5 mm (0.059 in)

Fig 18: Checking Clearance Between Retaining Plate And Snap Ring

Courtesy of SUBARU OF AMERICA, INC.

RETAINING PLATES THICKNESS SPECIFICATION

Retaining plates
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)

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

Fig 19: Installing Leaf Spring
Courtesy of SUBARU OF AMERICA, INC.
Install thrust needle bearing in the correct direction.

Fig 20: Installing Thrust Needle Bearing
Courtesy of SUBARU OF AMERICA, INC.
Install front sun gear and thrust needle bearing.

Fig 21: Installing Front Sun Gear And Thrust Needle Bearing
Courtesy of SUBARU OF AMERICA, INC.
Install the high clutch hub.
Attach the thrust needle bearing to the hub with vaseline and install the hub by correctly engaging the splines of the front planetary carrier.
Install the thrust needle bearing in proper direction.

Fig 22: Installing Thrust Needle Bearing
Courtesy of SUBARU OF AMERICA, INC.
Install the high clutch assembly.

Fig 23: Installing High Clutch Assembly
Courtesy of SUBARU OF AMERICA, INC.
Adjust total end play. < Ref. to , ADJUSTMENT , Oil Pump Housing. >
Install the thrust needle bearing in proper direction.

Fig 24: Installing Thrust Needle Bearing
Courtesy of SUBARU OF AMERICA, INC.
Install the oil pump housing assembly.
Install the torque converter clutch case assembly to the transmission case assembly. < Ref. to , INSTALLATION . >
Insert inhibitor switch and transmission connector into stay.
Install air breather hose. < Ref. to , INSTALLATION . >

Fig 25: Inserting Inhibitor Switch And Transmission Connector Into Stay
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Install oil cooler pipes. < Ref. to , INSTALLATION . >
Install the oil charger pipe with O-ring. < Ref. to , INSTALLATION . >
Insert the input shaft while turning lightly by hand. At this time, not to damage the bushing.
Normal protrusion A:

50 - 55 mm (1.97 - 2.17 in)

Fig 26: Inserting Input Shaft While Turning Lightly By Hand
Courtesy of SUBARU OF AMERICA, INC.
Install the torque converter clutch assembly. < Ref. to , INSTALLATION . >
Install the transmission assembly to the vehicle. < Ref. to , INSTALLATION . >