Subaru IMPREZA GD 2007 Series Manual page 2590

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31.Reduction Drive Gear
A: REMOVAL
1) Remove the transmission assembly from vehicle
body. <Ref. to 4AT-37, REMOVAL, Automatic
Transmission Assembly.>
2) Remove the rear wheel speed sensor, and sep-
arate the extension case from transmission case.
<Ref. to 4AT-70, REMOVAL, Extension Case.>
3) Remove the reduction driven gear. <Ref. to 4AT-
81, REMOVAL, Reduction Driven Gear.>
4) Using the ST, extract the reduction drive gear.
ST1 499737100 PULLER SET
ST2 899524100 PULLER SET
(A)
ST1
ST2
(A) Reduction drive gear
B: INSTALLATION
1) Install the reduction drive gear assembly.
NOTE:
Press-fit it to the bottom of bearing shoulder com-
pletely.
(A) Reduction drive gear
2) Install the reduction driven gear. <Ref. to 4AT-
81, INSTALLATION, Reduction Driven Gear.>
3) Join the transmission case and the extension
case, and then install the rear vehicle speed sen-
sor. <Ref. to 4AT-70, INSTALLATION, Extension
Case.>
4) Install the transmission assembly to the vehicle.
<Ref. to 4AT-39, INSTALLATION, Automatic
Transmission Assembly.>
Reduction Drive Gear
C: DISASSEMBLY
1) Take out the seal ring.
(A) Seal ring
(B) Reduction drive shaft
2) Remove the ball bearing using ST.
ST 498077600
AT-00159
(B)
(A) Ball bearing
(B) Reduction drive gear
3) Apply Vaseline to the outer surface of seal ring
and shaft groove.
(A)
AT-02213
(A) Reduction drive gear
4AT-83
AUTOMATIC TRANSMISSION
(A)
(B)
AT-00161
REMOVER
ST
(A)
AT-00162
(A)
AT-00163