After Inspection

Set dial gauge to the drive gear face and measure the backlash.

1. Standard drive gear backlash : 0.10 - 0.15 mm 
2. (0.0039 - 0.0059 in) 
   Fig 1: Using Dial Gauge Measure The Backlash

   Courtesy of NISSAN MOTOR CO., U.S.A.

• If the measured value out of standard, adjust the backlash by replacing the side bearing adjusting shim (carrier case side.)
  • If backlash too large, decrease side bearing adjusting shim thickness.
  • If backlash too small, increase side bearing adjusting shim thickness.

1. Runout limit : 0.05 mm (0.0020 in) 

• If the runout is exceed limit, check for drive gear assembly:
  • any object between the drive gear and differential case.
  • deformed differential case.
  • deformed drive gear
• if drive gear is deformed, replace the hypoid gear as an assembly. If the differential case is deformed, replace the differential case.

1. Set the dial gauge to the companion flange face and measure runout.
   1. Runout limit : 0.18 mm (0.007 in) 
2. Set the teat indicator to the inside diameter of the companion flange and measure the runout.
   1. Runout limit : 0.13 mm (0.005 in) 
      Fig 2: Checking Companion Flange Face & Inside Diameter Runout

      Courtesy of NISSAN MOTOR CO., U.S.A.

   Mark paint to maximum runout position.

   NOTE: Clean inside of companion flange before measuring runout.

   • If runout is exceed limit, remove the companion from the drive pinion. Turn the companion flange position 90° each, and measure the runout again.
   • If runout still exceed limit, replace companion flange.
   • If runout still exceed limit after replacing companion flange, check pinion bearing and drive pinion assembly, and pinion bearing damage.
3. If runout is out side limit, remove the companion from the drive pinion. Turn the companion flange position 90° each, and measure the runout again.
4. If runout valve still out side of the limit, replace companion flange.
5. If runout valve still out side of limit after replacing companion flange, check pinion bearing and drive pinion assembly, and pinion bearing damage.

1. Tool number : ST3127S000 (J-25765-A) 
2. Total preload : 1.56 - 2.65 N.m (0.16 - 0.27 kg-m, 14 - 23 in-lb) 
   Fig 3: Checking Total Preload With Special Service Tool

   Courtesy of NISSAN MOTOR CO., U.S.A.

• If the preload value is out of standard, adjust pinion bearing preload and side bearing preload.
  1. If preload value too large:
     • Decrease the drive pinion bearing adjusting washer thickness.
     • Decrease the drive pinion adjusting washer thickness.
     • Increase the side bearing adjusting shim thickness.

       If preload value too small:

  2. If preload value to small:
     • Increase the drive pinion bearing adjusting washer thickness.
     • Increase the drive pinion adjusting washer thickness.
     • Decrease the side bearing adjusting shim thickness.