Subaru Legacy IV (2008 year). Service manual — part 691
4AT-112
AT Main Case
AUTOMATIC TRANSMISSION
C: DISASSEMBLY
1. HIGH CLUTCH AND REVERSE CLUTCH
1) Remove the snap ring, and then take out the re-
taining plate, drive plate and driven plate.
2) Remove the snap ring, and then take out the re-
taining plate, drive plate and driven plate.
3) Using the ST1 and ST2, remove the snap ring.
ST1
398673600
COMPRESSOR
ST2
498627100
SEAT
4) Take out the clutch cover, spring retainer, high
clutch piston and reverse clutch piston.
5) Remove the seal ring and lip seal from the high
clutch piston and reverse clutch piston.
(A) Snap ring
(A) Snap ring
(A) Snap ring
AT-00236
(A)
AT-00237
(A)
AT-00238
(A)
ST1
ST2
(A) Reverse clutch piston
(B) Clutch cover
(C) Return spring
(A) High clutch piston
(B) Reverse clutch piston
AT-00239
(A)
(B)
(C)
AT-00240
(A)
(B)
4AT-113
AT Main Case
AUTOMATIC TRANSMISSION
2. PLANETARY GEAR AND LOW CLUTCH
1) Remove the snap ring from low clutch drum.
2) Take out the front planetary carrier.
3) Take out the rear sun gear.
4) Take out the rear planetary carrier, washer and
thrust needle bearing.
5) Take out the rear internal gear.
6) Remove the snap ring from low clutch drum.
(A) Snap ring
(B) Low clutch drum
(A) Front planetary carrier
(B) Low clutch drum
(A) Rear sun gear
(B) Rear planetary carrier
AT-00259
(A)
(B)
AT-00260
(B)
(A)
AT-00261
(B)
(A)
(A) Rear planetary carrier
(B) Low clutch drum
(A) Rear internal gear
(B) Low clutch drum
(A) Snap ring
(B) Low clutch drum
AT-00262
(B)
(A)
AT-00263
(B)
(A)
AT-00264
(B)
(A)
4AT-114
AT Main Case
AUTOMATIC TRANSMISSION
7) Compress the spring retainer of the low & re-
verse brake, and remove the snap ring from the low
clutch drum using ST1 and ST2.
ST1
498627100
SEAT
ST2
398673600
COMPRESSOR
8) Remove the one-way clutch. <Ref. to 4AT-102,
REMOVAL, AT Main Case.>
9) Install the one-way clutch inner race to the low
clutch drum, and then apply compressed air to re-
move the low clutch piston.
10) Remove the one-way clutch inner race.
11) Remove the one-way clutch after taking out the
snap ring.
12) Remove the needle bearing after taking out the
snap ring.
3. 2-4 BRAKE
Separate the 2-4 brake piston and piston retainer.
4. ONE-WAY CLUTCH INNER RACE
1) Remove the seal ring.
2) Remove the needle bearing using ST.
ST
398527700
PULLER ASSY
(A) Snap ring
(B) Low clutch drum
(A) Apply compressed air.
(B) One-way clutch inner race
(A) Snap ring
(B) Plate
(C) One-way clutch
AT-00265
(B)
(A)
ST1
ST2
AT-00266
(B)
(A)
AT-00267
(A)
(C)
(B)
(A) Needle bearing
(B) Snap ring
(A) 2-4 brake piston
(B) 2-4 brake piston retainer
(A) One-way clutch inner race
(B) Seal ring
AT-00268
(B)
(A)
AT-00288
( A )
( B )
AT-00298
(B)
(A)
4AT-115
AT Main Case
AUTOMATIC TRANSMISSION
5. ONE-WAY CLUTCH OUTER RACE
1) Remove the one-way clutch after taking out the
snap ring.
2) Remove the needle bearing after taking out the
snap ring.
D: ASSEMBLY
1. HIGH CLUTCH AND REVERSE CLUTCH
1) Install a new seal ring and lip seal to the high
clutch piston and reverse clutch piston.
2) Install the high clutch piston to the reverse clutch
piston.
NOTE:
Take care not to damage the seal ring and lip seal.
3) Install the reverse clutch piston to the high clutch
drum. Align the groove on reverse clutch piston
with the groove on high clutch drum during installa-
tion.
(A) Snap ring
(B) Plate
(C) One-way clutch
(A) Needle bearing
(B) Snap ring
AT-00267
(A)
(C)
(B)
AT-00268
(B)
(A)
(A) High clutch piston
(B) Reverse clutch piston
(A) Reverse clutch piston
(B) High clutch drum
AT-00240
(A)
(B)
AT-00241
(A)
(B)
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