Subaru IMPREZA GD 2007 Series Manual page 3295

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17) Remove the pilot bearing together with the front
bearing cone and spacer using the ST.
ST 398467700 DRIFT
(D)
(A) Pilot bearing
(B) Spacer
(C) Front bearing
(D) Rear bearing cup
18) When replacing the bearings, hit out the front
bearing cup and rear bearing cup in this order out of
case using a brass bar.
(B)
(A) 2 cutout portions along diagonal lines
(B) Tap alternately with brass bar.
Rear Differential
ST
(B)
(C) (A)
DI-00076
(A)
DI-00077
DI-29
2. STI MODEL
To detect the real cause of trouble, inspect the fol-
lowing items before disassembling.
• Tooth contact and backlash of hypoid driven
gear and drive pinion.
• Driven gear rear face runout limit
• Total preload of drive pinion
1) Set the ST on vise and install the differential as-
sembly to ST.
ST 398217700 ATTACHMENT
2) Drain the gear oil by removing the plug.
3) Remove the air breather cap.
NOTE:
• Do not attempt to replace the air breather cap un-
less necessary.
• Whenever the air breather cap is removed, re-
place it with a new part.
(B)
(A) Air breather cap
(B) Rear cover
DIFFERENTIALS
ST
DI-00061
(A)
DI-00346