Subaru Legacy (2005 year). Service manual — part 529

4AT-97

AUTOMATIC TRANSMISSION

Reduction Drive Gear

34.Reduction Drive Gear

A: REMOVAL

1) Remove the transmission assembly from vehi-
cle. <Ref. to 4AT-39, REMOVAL, Automatic Trans-
mission Assembly.>
2) Remove the rear vehicle speed sensor, and then
separate the extension case from transmission
case. <Ref. to 4AT-83, REMOVAL, Extension
Case.>
3) Remove the reduction driven gear. <Ref. to 4AT-
95, REMOVAL, Reduction Driven Gear.>
4) Using the ST, pull out the reduction drive gear.
ST1

499737100

PULLER

ST2

899524100

PULLER SET

B: INSTALLATION

1) Install the reduction drive gear assembly.

NOTE:
Press-fit it to the bottom of bearing shoulder com-
pletely.

2) Install the reduction driven gear. <Ref. to 4AT-
95, INSTALLATION, Reduction Driven Gear.>
3) Combine the transmission case with extension
case, and then install the rear vehicle speed sen-
sor. <Ref. to 4AT-83, INSTALLATION, Extension
Case.>
4) Install the transmission assembly into vehicle.
<Ref. to 4AT-42, INSTALLATION, Automatic
Transmission Assembly.>

C: DISASSEMBLY

1) Take out the seal ring.

2) Remove the ball bearing using ST.
ST

498077600

REMOVER

3) Remove the reduction drive gear using press.

D: ASSEMBLY

1) Press-fit the reduction drive gear into shaft.
2) Press-fit the new ball bearing into reduction drive
gear.
3) Apply vaseline to the outer surface of seal ring
and shaft groove.

(A) Reduction drive gear

(A) Reduction drive gear

AT-00159

(A)

ST2

ST1

AT-02213

(A)

(A) Seal ring

(B) Reduction drive shaft

(A) Ball bearing

(B) Reduction drive gear

(A) Reduction drive gear

AT-00161

(A)

(B)

AT-00162

(A)

(B)

ST

AT-00163

(A)

4AT-98

AUTOMATIC TRANSMISSION

Reduction Drive Gear

4) Apply ATF to new seal ring, and install them.

E: INSPECTION

• Rotate the bearing by hand, Check that it rotates
smoothly.
• Check each part for hole, damage or other for-
eign matters.
• Measure the extension end play and adjust it to
within specification. <Ref. to 4AT-90, ADJUST-
MENT, Transfer Clutch.>

(A) Seal ring

(B) Reduction drive shaft

AT-00161

(A)

(B)

4AT-99

AUTOMATIC TRANSMISSION

Center Differential Carrier

35.Center Differential Carrier

A: REMOVAL

1) Remove the transmission assembly from vehi-
cle. <Ref. to 4AT-39, REMOVAL, Automatic Trans-
mission Assembly.>
2) Remove the rear vehicle speed sensor, and then
separate the extension case from transmission
case. <Ref. to 4AT-83, REMOVAL, Extension
Case.>
3) Pull out the rear drive shaft. <Ref. to 4AT-94,
REMOVAL, Rear Drive Shaft.>
4) Using the ST, pull out the center differential car-
rier assembly.
ST1

499737100

PULLER

ST2

899524100

PULLER SET

5) Pull out the shim(s) from transmission case.

B: INSTALLATION

1) Install the center differential assembly with shim.

NOTE:
Press-fit it to the bottom of bearing shoulder com-
pletely.

2) Insert the rear drive shaft. <Ref. to 4AT-94, IN-
STALLATION, Rear Drive Shaft.>
3) Combine the transmission case with extension
case, and then install the rear vehicle speed sen-
sor. <Ref. to 4AT-83, INSTALLATION, Extension
Case.>
4) Install the transmission assembly into vehicle.
<Ref. to 4AT-42, INSTALLATION, Automatic
Transmission Assembly.>

C: DISASSEMBLY

1) Remove the seal ring.

2) Using a press and ST, remove the ball bearing.
ST

498077600

REMOVER

3) Remove the snap ring, and pull out the shaft
from center differential assembly.

AT-00164

ST2

ST1

AT-00165

(A) Seal ring

(A) Snap ring

(B) Shaft

AT-00166

(A)

AT-00167

AT-00168

(A)

(B)

4AT-100

AUTOMATIC TRANSMISSION

Center Differential Carrier

4) Remove the thrust washer, pinion gear and
washer from center differential assembly.

5) Pull out the intermediate shaft and thrust bear-
ing.

D: ASSEMBLY

1) Install the thrust washer onto intermediate shaft.
2) Install the thrust bearing onto intermediate shaft.
3) Install the pinion gears and washers.
4) Insert the shaft into center differential assembly.
5) Install the snap ring.
6) Using a press, install a new ball bearing into cen-
ter differential assembly.
ST

498077000

REMOVER

7) Apply vaseline onto the seal ring outer surface
and shaft grooves.
8) Install a new seal rings.

E: INSPECTION

• Check that the holes, damages or other foreign
matters are not on each parts.
• Inspect the extension end play and adjust it to
within specification. <Ref. to 4AT-91, VTD MODEL,
Transfer Clutch.>

(A) Pinion gear

(A) Plate

(B) Center differential carrier

AT-00169

(A)

AT-00170

(A)

(B)

ST