Rear final drive (φ220 mm { 8.66 in })(differential lock) inspection

1. Final drive inspection

1) Inspect each bearing for the following.

  • Seizing
  • Spalling
  • Noise

Legend

  1. Inner bearing
  2. Outer bearing
  3. Side bearing

2) Inspect the differential carrier rear axle mounting section, differential carrier side bearing mounting section, as well as bearing cap for the following.

  • Cracking
  • Damage
  • Wear

3) Inspect the pinion bearing race and pinion bearing oil seal inlay sections for the following.

  • Cracking
  • Damage
  • Wear

4) Inspect the flange for the following.

  • Worn oil seal contact section
  • Worn spline section
  • Cracking of mounting section
  • Damage to the mounting section

5) Inspect the gear contact surfaces on the drive and coast sides of the ring gear and drive pinion for the following.

  • Chipping
  • Cracking
  • Spalling
  • Pitting
  • Improper tooth contact

6) Inspect the spline section of the drive pinion for the following.

  • Cracking
  • Twisting
  • Damage

Caution

  • Replace the ring gear and drive pinion as a set.

2. Differential cage inspection

1. Visual inspection

1) Inspect the side gear, side gear thrust washer, pinion gear, and pinion shaft for the following.

  • Wear
  • Damage
  • Other malfunctions

2) Inspect the differential cage for the following.

  • Wear
  • Damage
  • Corrosion
  • Other malfunctions

3) Inspect the fitting section of the differential cage and ring gear, the fitting section of the differential cage and side gear, and the differential cage lock pin holes for the following.

  • Damage
  • Wear

Note

  • Repair minor damage and wear using an oil stone or fine sandpaper.

2. Coil assembly inspection

1) Measure the resistance between terminals.

Note

  • Perform the measurement at outside temperature of 20°C.

Standard: 2.65 to 2.95 Ω

Caution

  • If the reading is outside the standard range, replace the coil assembly.