Subaru 2009 IMPREZA Service Manual page 2308

DIFFERENTIALS
• Face contact
Check item: Backlash is too large.
Contact pattern
Corrective action: Increase thickness of drive
pinion height adjusting washer in order to bring
drive pinion close to hypoid driven gear.
• Flank contact
Check item: Backlash is too small.
Contact pattern
Corrective action: Reduce the thickness of pin-
ion height adjusting washer according to the
procedure for bringing drive pinion away from
hypoid driven gear.
Rear Differential
• Toe contact (inside contact)
Check item: Teeth contact area is too small.
Contact pattern
AT-00208
Corrective action: Reduce the thickness of pin-
ion height adjusting washer according to the
procedure for bringing drive pinion away from
hypoid driven gear.
AT-00212
• Heel contact (outside end contact)
Check item: Teeth contact area is too small.
Contact pattern
AT-00209
Corrective action: Increase thickness of drive
pinion height adjusting washer in order to bring
the drive pinion closer to the hypoid driven gear.
AT-00213
DI-30
AT-00210
AT-00213
AT-00211
AT-00212