Subaru Outback manuals

Subaru Outback: AT Main Case

A: REMOVAL

1) Remove the transmission assembly from the vehicle.

<Ref. to 5AT-37, REMOVAL, Automatic Transmission Assembly.>

2) Pull out the torque converter assembly. <Ref. to 5AT-63, REMOVAL, Torque Converter Assembly.>

3) Remove the transmission harness connector from stay.

4) Remove the ATF cooler inlet pipe and outlet pipe. <Ref. to 5AT-58, REMOVAL, ATF Cooler Pipe and Hose.>

5) Remove the extension case. <Ref. to 5AT-65, REMOVAL, Extension Case.>

6) Remove the center differential carrier. <Ref. to 5AT-74, REMOVAL, Center Differential Carrier.>

7) Remove the reduction driven gear. <Ref. to 5AT- 71, REMOVAL, Reduction Driven Gear.>

8) Separate the converter case from the transmission case. <Ref. to 5AT-78, REMOVAL, Converter Case.>

9) Remove the control valve body. <Ref. to 5AT- 55, REMOVAL, Control Valve Body.>

10) Remove the oil pump cover. <Ref. to 5AT-80, REMOVAL, Oil Pump Cover.>

NOTE: The input clutch pack assembly and front sun gear assembly are also removed together.

Subaru Outback. Automatic Transmission

11) Remove the needle bearing of the middle carrier assembly.

Subaru Outback. Automatic Transmission

12) Remove the middle carrier assembly.

Subaru Outback. Automatic Transmission

13) Remove the rear carrier assembly.

Subaru Outback. Automatic Transmission

14) Remove the middle & rear sun gear assembly.

Subaru Outback. Automatic Transmission

15) Remove the thrust needle bearing of high & low reverse clutch.

Subaru Outback. Automatic Transmission

16) Remove the high & low reverse clutch assembly.

Subaru Outback. Automatic Transmission

17) Remove the direct clutch assembly.

Subaru Outback. Automatic Transmission

18) Remove the snap ring of reverse brake.

Subaru Outback. Automatic Transmission

19) Remove the retaining plate.

20) Remove the leaf spring.

Subaru Outback. Automatic Transmission

  1. Leaf spring

21) Take out the drive plate, driven plate and dish plate.

22) Remove the snap ring of the reverse brake spring retainer.

ST1 18762AA000 COMPRESSOR SPECIAL TOOL
ST2 18765AA000 COMPRESSOR SUPPORT
ST3 18763AA000 COMPRESSOR SHAFT

Subaru Outback. Automatic Transmission

23) Remove the spring retainer.

Subaru Outback. Automatic Transmission

24) Remove the return spring.

Subaru Outback. Automatic Transmission

25) Apply compressed air.

Subaru Outback. Automatic Transmission

26) Remove the reverse brake piston.

Subaru Outback. Automatic Transmission

27) Remove the thrust bearing and seal ring.

Subaru Outback. Automatic Transmission

  1. Thrust bearing
  2. Seal ring

B: INSTALLATION

1) Apply ATF to the new seal ring.

2) Install the thrust bearing and new seal ring to the drum support.

Subaru Outback. Automatic Transmission

  1. Thrust bearing
  2. Seal ring

3) Install the reverse brake piston.

NOTE: Apply ATF onto the piston sliding surface.

ST1 18762AA000 COMPRESSOR SPECIAL TOOL
ST2 18765AA000 COMPRESSOR SUPPORT
ST3 18763AA000 COMPRESSOR SHAFT

4) Install the return spring.

Subaru Outback. Automatic Transmission

5) Install the spring retainer and snap ring.

ST1 18762AA000 COMPRESSOR SPECIAL TOOL
ST2 18765AA000 COMPRESSOR SUPPORT
ST3 18763AA000 COMPRESSOR SHAFT

Subaru Outback. Automatic Transmission

6) Install the dish plate.

NOTE: When installing, make sure that the identification mark is facing the rear side of transmission.

7) Install the drive plate and driven plate.

NOTE: When the reverse brake is disassembled, use a new drive plate and driven plate set.

8) Install the leaf spring.

Subaru Outback. Automatic Transmission

  1. Leaf spring

9) Install the retaining plate.

10) Install the snap ring of the reverse brake.

Subaru Outback. Automatic Transmission

11) Apply compressed air intermittently to check for operation.

Subaru Outback. Automatic Transmission

12) Check the piston stroke.

  1. Check the amount of drive plate compression "A" described in the wave clutch set of repair parts.

Subaru Outback. Automatic Transmission

A - Amount of drive plate compression

  1. Drive plate
  2. Driven plate
  3. Retaining plate
  1. Measure the clearance "B" between the retaining plate and snap ring using a thickness gauge.

NOTE:

Subaru Outback. Automatic Transmission

B - Clearance between retaining plate and snap ring

  1. Select and install a retaining plate so that the value calculated from the dimensions A and B is within the standard.

T = A + B
T: Piston stroke
A: Amount of drive plate compression
B: Clearance between retaining plate and snap ring

Initial standard: 2.0 - 2.4 mm (0.08 - 0.09 in)

Subaru Outback. Automatic Transmission

13) Install the direct clutch assembly.

Subaru Outback. Automatic Transmission

14) Install the high & low reverse clutch assembly.

Subaru Outback. Automatic Transmission

15) Install the thrust needle bearing of the high & low reverse clutch.

Subaru Outback. Automatic Transmission

16) Install the middle & rear sun gear assembly.

Subaru Outback. Automatic Transmission

17) Install the rear carrier assembly.

Subaru Outback. Automatic Transmission

18) Install the middle carrier assembly.

Subaru Outback. Automatic Transmission

19) Install the thrust needle bearing of middle carrier assembly.

Subaru Outback. Automatic Transmission

20) Measure the total end play, and select the bearing. <Ref. to 5AT-103, ADJUSTMENT, AT Main Case.>

21) Install the input clutch pack assembly to oil pump cover.

Subaru Outback. Automatic Transmission

  1. Input clutch pack ASSY
  2. Front sun gear ASSY

22) Turn the transmission sideways.

23) Install the oil pump cover.

  1. Apply ATF to the O-ring of input clutch shaft.
  2. Install the oil pump cover to AT main case while supporting the input clutch shaft and oil pump housing with your hand.

NOTE: Use a new gasket.

Subaru Outback. Automatic Transmission

  1. Protect the input clutch shaft with a cloth, and rotate to engage the spline of the input clutch and rear carrier using pliers.

NOTE: Work with pressing the oil pump cover.

Subaru Outback. Automatic Transmission

  1. Cloth
  1. Combine the oil pump cover with transmission main case.

Tightening torque: 41 N*m (4.2 kgf-m, 30.2 ft-lb)

Subaru Outback. Automatic Transmission

24) Install the center differential carrier. <Ref. to 5AT-74, INSTALLATION, Center Differential Carrier.>

25) Install the reduction driven gear. <Ref. to 5AT- 71, INSTALLATION, Reduction Driven Gear.>

26) Install the extension case. <Ref. to 5AT-65, INSTALLATION, Extension Case.>

27) Install the control valve body. <Ref. to 5AT-55, INSTALLATION, Control Valve Body.>

28) Install the converter case assembly to the transmission case assembly. <Ref. to 5AT-78, INSTALLATION, Converter Case.>

29) Install the ATF cooler pipe. <Ref. to 5AT-59, INSTALLATION, ATF Cooler Pipe and Hose.>

30) Install the torque converter assembly. <Ref. to 5AT-63, INSTALLATION, Torque Converter Assembly.>

31) Install the transmission assembly to the vehicle.

<Ref. to 5AT-42, INSTALLATION, Automatic Transmission Assembly.>

32) Perform Clear Memory 2 operation. <Ref. to 5AT(diag)-21, Clear Memory Mode.>

33) Perform the diagnosis again. <Ref. to 5AT(diag)- 23, Learning Control.>

34) Perform the inspection at the end of repair work, and make sure there is no faulty as below;

C: DISASSEMBLY

1. INPUT CLUTCH PACK ASSEMBLY

1) Remove the front sun gear.

Subaru Outback. Automatic Transmission

2) Remove the thrust bearing.

3) Remove the snap ring, and then remove the front carrier.

Subaru Outback. Automatic Transmission

4) Remove the input clutch assembly from rear internal gear.

Subaru Outback. Automatic Transmission

D: ASSEMBLY

1. INPUT CLUTCH PACK ASSEMBLY

1) Assemble the input clutch assembly to rear internal gear.

Subaru Outback. Automatic Transmission

2) Install the front carrier, and then install the snap ring.

Subaru Outback. Automatic Transmission

3) Install the thrust bearing.

4) Install the front sun gear.

Subaru Outback. Automatic Transmission

E: INSPECTION

1. FRONT, MIDDLE & REAR PLANETARY CARRIER ASSEMBLY

Check the following items.

2. INPUT CLUTCH

Standard: 0.7 - 1.1 mm (0.028 - 0.043 in)

Subaru Outback. Automatic Transmission

3. HIGH & LOW REVERSE CLUTCH ASSEMBLY

Standard: 1.8 - 2.2 mm (0.071 - 0.087 in)

Subaru Outback. Automatic Transmission

4. DIRECT CLUTCH ASSEMBLY

Standard: 0.6 - 1.0 mm (0.024 - 0.039 in)

Subaru Outback. Automatic Transmission

5. REVERSE BRAKE

Check the following items.

F: ADJUSTMENT

1) Using the ST, measure the height "A" from the AT main case mating surface to the convex surface of oil pump cover.

ST 499575400 GAUGE

Subaru Outback. Automatic Transmission

2) Using the ST, measure the depth "B" from the convex surface of oil pump cover to thrust bearing transferring surface.

ST 499575400 GAUGE

Subaru Outback. Automatic Transmission

3) Calculate the measured value from step 1) and 2), and then set the calculated value as "C".

Calculation formula: C = A - B

4) Using the ST, measure the depth "D" from the AT main case mating surface to the thrust bearing transferring surface of front sun gear.

ST 499575400 GAUGE

Subaru Outback. Automatic Transmission

5) Set the value as "E" which subtract the thickness of ST (499575400 GAUGE) from the measured value on step 4).

Calculation: E (mm) = D - 15
[E (in) = D - 0.59]

6) Calculation formula:

When clearances are 0.25 mm (0.0098 in):
T (mm) = E - C + 0.03
[T (in) = E - C + 0.0012]
When clearances are 0.55 mm (0.0217 in):
T (mm) = E - C + 0.27
[T (in) = E - C + 0.0106]
T: Thrust bearing thickness
C: Distance from oil pump cover mating surface to rear end of oil pump cover
E: Depth from mating surface of AT main case to bearing surface of front sun gear

Specification: 0.25 - 0.55 mm (0.0098 - 0.0217 in)

NOTE: Calculation formula for "T" above is applied when measuring with the ST (499575400 GAUGE). In the calculation without using ST, substitute the thickness of collar used to calculate the value "E" on step 5).

7) Select the thrust bearing so that the clearance is within the specified range.

Subaru Outback. Automatic Transmission

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