Subaru LEGACY 2006 Manual page 3247

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AUTOMATIC TRANSMISSION
3) Rotate the drive pinion a few times using ST1
and ST2.
ST1 498937110 HOLDER
ST2 499787700 WRENCH
4) Adjust the drive pinion and driven gear backlash.
<Ref. to 4AT-99, ADJUSTMENT, Front Differential
Assembly.>
5) Apply red lead evenly to the surfaces of three or
four teeth on the driven gear. Rotate the drive pin-
ion back and forward several times. Remove the oil
pump housing, and check the teeth contact pattern.
If the teeth contact is inappropriate, adjust the
backlash or thickness of the shim. <Ref. to 4AT-99,
ADJUSTMENT, Front Differential Assembly.>
• Correct tooth contact
Check item: Tooth contact surface is slightly
shifted toward the toe side under a no-load con-
dition. (When driving, it moves towards the heel
side.)
(B)
(A) Toe side
(B) Heel side
Drive Pinion Shaft Assembly
• Face contact
Checking item: Backlash is too large.
Contact pattern
ST2
ST1
AT-00206
Corrective action: Increase thickness of pinion
height adjusting washer according to the proce-
dures for moving the drive pinion closer to the driv-
en gear.
(A)
AT-00207
4AT-92
AT-00208
AT-00212