Front Final Drive: Disassembly: Pre-Inspection

Before disassembling final drive, perform the following inspection.

• Total preload
  1. Turn drive pinion in both directions several times to set bearing rollers.
  2. Check total preload with Tool.

     Tool number: ST3127S000 (J25765-A) 

     Total preload: 

     P ₁  + [0.3 -1.5 N.m (3 - 15 kg-cm, 2.6 - 13.0 in-lb)] 

     P ₁  = Drive pinion preload 

     Fig 1: Checking Preload With Tool

     Courtesy of NISSAN MOTOR CO., U.S.A.
• Ring gear to drive pinion backlash

  Check backlash of ring gear with a dial indicator at several points.

  Ring gear-to-drive pinion backlash: 

  0.10 - 0.15 mm (0.0039 - 0.0059 in) 

  Fig 2: Checking Backlash Of Ring Gear With Dial Indicator

  Courtesy of NISSAN MOTOR CO., U.S.A.
• Ring gear runout

  Check runout of ring gear with a dial indicator.

  Runout limit: 

  0.05 mm (0.0020 in) 

• Tooth contact

  Check tooth contact. Refer to TOOTH CONTACT .

  Fig 3: Checking Runout Of Ring Gear With Dial Indicator

  Courtesy of NISSAN MOTOR CO., U.S.A.
• Side gear to pinion mate gear backlash

  Using a feeler gauge, measure clearance between side gear thrust washer and differential case.

  Clearance between side gear thrust washer and differential case: 

  Less than 0.15 mm (0.0059 in) 

  Fig 4: Measuring Clearance Between Side Gear Thrust Washer And Differential Case

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