Inspection After Disassembly

Drive Gear and Drive Pinion 

• Clean up the disassembled parts.
• If the gear teeth never mesh or line-up correctly, determine the cause and adjust or replace as necessary.
• If the gears are worn, cracked, damaged, pitted or chipped (by friction) noticeably, replace with new drive gear and drive pinion as a set.

Bearing 

• Clean up the disassembled parts.
• If any chipped (by friction), pitted, worn, rusted or scratched marks, or unusual noise from the bearing is observed, replace as a bearing assembly (as a new set).

Oil Seal 

• Whenever disassembled, replace.
• If wear, deterioration of elasticity (sealing force lips), or damage is detected on the lips, replace them.

Differential Assembly 

• Clean up the disassembled parts.
• If any wear or crack on the contact sides of the differential case is found, replace.
• If any cracks or damage on the surface of the side gear and pinion mate gear tooth is found, replace.
• If it is chipped (by friction), damaged, or unusually worn, replace.
• Measure and check side gear end play with the following procedure.

1. Place differential assembly straight up so that side gear to be measured comes upward.

   Courtesy of NISSAN NORTH AMERICA, INC.

2. Using feeler gauge, measure the clearance between side gear back and differential case at 3 different points, while rotating side gear. Average the 3 readings, and then measure the clearance of the other side as well.

   Courtesy of NISSAN NORTH AMERICA, INC.

   Side gear back clearance

   : Refer to REAR FINAL DRIVE : Service Data .

   CAUTION: To prevent side gear from tilting, insert feeler gauges with the same thickness from both sides.
   • If the back clearance is outside the specification, replace differential.