Subaru 2009 IMPREZA Service Manual page 2145

• Heel contact (outside end contact)
Check item: Teeth contact area is too small.
Contact pattern
Corrective action: Reduce the thickness of drive
pinion shim and loosen the side retainer to move
the driven gear away from the drive pinion accord-
ing to the procedure for moving drive pinion shaft
closer to the driven gear.
Front Differential Assembly
AT-00211
AT-00212
5MT-73
MANUAL TRANSMISSION AND DIFFERENTIAL