Tooth Contact Of HYPOID Gear

WARNING: This page is about a different variant/trim than selected.

Adjust until correct teeth contact is obtained.
Check tooth contact, and perform the adjustment as follows.
- Tooth contact
  Check item: Tooth contact surface is slightly shifted toward the toe side under a no-load condition. (When driving, it moves towards the heel side.
  
  Fig 1: Identifying Toe Side And Heel Side
  Courtesy of SUBARU OF AMERICA, INC.
- Face contact
  Check item: Backlash is too large.
  
  Contact pattern
  
  Fig 2: View Of Contact Pattern
  Courtesy of SUBARU OF AMERICA, INC.
  
  Corrective action: Tighten the side retainer to move the driven gear closer to the drive pinion.
  
  Fig 3: View Of Corrective Action
  Courtesy of SUBARU OF AMERICA, INC.
- Flank contact
  Check item: Backlash is too small.
  
  Contact pattern
  
  Fig 4: View Of Contact Pattern
  Courtesy of SUBARU OF AMERICA, INC.
  
  Corrective action: Loosen the side retainer to move the driven gear away from the drive pinion.
  
  Fig 5: View Of Toe Contact
  Courtesy of SUBARU OF AMERICA, INC.
- Toe contact (inside contact)
  Check item: Teeth contact area is too small.
  
  Contact pattern
  
  Fig 6: View Of Corrective Action
  Courtesy of SUBARU OF AMERICA, INC.
  
  Corrective action: Increase thickness of the drive pinion shim according to the procedures for moving the drive pinion shaft away from the driven gear. Also tighten the side retainer to move the driven gear closer to the drive pinion shaft.
  
  Fig 7: View Of Contact Pattern
  Courtesy of SUBARU OF AMERICA, INC.
- Heel contact (outside end contact)
  Check item: Teeth contact area is too small.
  
  Contact pattern
  
  Fig 8: View Of Contact Pattern
  Courtesy of SUBARU OF AMERICA, INC.
  
  Corrective action: Reduce thickness of the drive pinion shim according to the procedures for moving the drive pinion shaft closer to driven gear. Also loosen the side retainer to move the driven gear away from the drive pinion.
  
  Fig 9: View Of Corrective Action
  Courtesy of SUBARU OF AMERICA, INC.