Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Impreza 2001-2002.2004-2007 Approved Subaru Impreza 2004 WRX STi 04. TRANSMISSION 02. AUTOMATIC TRANSMISSION 38. AT Main Case
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AT MAIN CASE
AUTOMATIC TRANSMISSION
38.AT Main Case 12) Take out the high clutch hub and the thrust
bearing.
A: REMOVAL
1) Remove the transmission assembly from the ve- (A)
hicle.
2) Extract the torque converter clutch assembly.
3) Remove the input shaft. (B)
AT-00233
(A) High clutch hub
(B) Thrust needle bearing
13) Take out the front sun gear and the thrust bear-
ing.
(A)
AT-00114
4) Lift-up the lever behind the transmission harness
connector and disconnect it from stay.
5) Disconnect the inhibitor switch connector from
stay.
6) Disconnect the air breather hose. (B)
7) Remove the oil charger pipe.
8) Remove the oil cooler inlet and outlet pipes. AT-00251
(A) Front sun gear
9) Separate the torque converter clutch case and (B) Thrust needle bearing
transmission case. 14) Pull out the leaf spring without folding.
10) Remove the oil pump housing. NOTE:
Remove it while pressing the lower leaf spring
11) Take out the high clutch, thrust needle bearing down.
and reverse clutch assembly.
(A)
(A)
(B)
(B)
AT-00252
AT-00232
(A) Leaf spring
(A) High clutch and reverse clutch assembly (B) Retaining plate
(B) Thrust needle bearing
4AT-114
AT MAIN CASE
AUTOMATIC TRANSMISSION
15) Remove the snap ring and thrust needle bear- 19) Remove the snap ring.
ing.
(A)
(A) (B)
(B)
AT-00285
AT-00253
(A) Snap ring
(A) Snap ring (B) 2-4 brake piston
(B) Thrust needle bearing
20) Take out the 2-4 brake return spring.
16) Take out the retaining plate, drive plate and
driven plate of 2-4 brake.
AT-00286
AT-00254
21) Remove the 2-4 brake piston and piston retain-
er without damaging.
17) Take out the thrust needle bearing, planetary
(A)
gear assembly and the low clutch assembly.
(B)
AT-00287
AT-00255 (A) 2-4 brake piston
(B) 2-4 brake piston retainer
18) Remove the 2-4 brake seal.
AT-00284
4AT-115
AT MAIN CASE
AUTOMATIC TRANSMISSION
22) Pull out the leaf spring without folding. 26) Take out the spring retainer.
(A)
AT-00293 AT-00302
27) Take out the return spring.
(A) Leaf spring
23) Remove the snap ring.
(A)
AT-00301
28) Apply compressed air.
AT-00294
(A) Snap ring
24) Take out the retaining plate, drive plate, driven
plate and dish plate.
AT-00297
29) Take out the low & reverse piston.
AT-00295
25) Turn the transmission case upside down, and
then take out the socket bolts while holding the
one-way clutch inner race with hand.
AT-00300
AT-00296
4AT-116
AT MAIN CASE
AUTOMATIC TRANSMISSION
B: INSTALLATION Tightening torque:
1) Install the low and reverse piston without tilting. 25 N ◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo