Subaru Impreza 2003 Service Manual page 1663

If specified tolerance limits are exceeded, select a
suitable high clutch retaining plate.
Reverse clutch retaining plates
Part No.
31567AA910
31567AA920
31567AA930
31567AA940
31567AA950
31567AA960
31567AA970
31567AA980
2. PLANETARY GEAR, LOW CLUTCH
1) Install lathe cut seal ring to low clutch piston.
2) Fit the low clutch piston to the low clutch drum.
(A) Low clutch piston
(B) Low clutch drum
3) Install spring retainer to low clutch piston.
(A) Spring retainer
(B) Low clutch drum
AT TRANSMISSION MAIN CASE
Thickness mm (in)
4.0 (0.157)
4.2 (0.165)
4.4 (0.173)
4.6 (0.181)
4.8 (0.189)
5.0 (0.197)
5.2 (0.205)
5.4 (0.213)
(A)
(B)
AT-00269
(A)
(B)
AT-00270
4AT-131
AUTOMATIC TRANSMISSION
4) Install ST to low clutch drum.
ST 498437100 LOW CLUTCH PISTON
GUIDE
5) Set the cover on the piston with a press using
ST1 and ST2, and attach the snap ring. At this time,
be careful not to fold cover seal during installation.
ST1 498627100 SEAT
ST2 398673600 COMPRESSOR
ST3 498437100 LOW CLUTCH PISTON
GUIDE
6) Install the dish plate, driven plates, drive plates,
and retaining plate, and secure with the snap ring.
(A)
(A) Snap ring
(B) Low clutch drum
(C) Dish plate
(D) Low clutch piston side
ST
AT-00271
ST2
ST3
ST1
AT-00272
(C)
(D)
(B)
AT-00273