Pinion Bearing Preload
WARNING: This page is about a different variant/trim than selected.
Assemble the drive pinion parts if they are disassembled. Refer to FRONT FINAL DRIVE PINION : Disassembly & Assembly .
- Make sure all parts are clean. Also, make sure the bearings are well lubricated with gear oil.
- Install companion flange.NOTE: When reusing drive pinion, align the matching mark
of drive pinion with the matching mark
of companion flange, and then install companion flange
.
- Temporarily tighten removed drive pinion lock nut to drive pinion, using flange wrench (commercial service tool).
A: Preload gauge [SST: ST3127S000 (J-25765-A)]
NOTE: Use removed drive pinion lock nut only for the preload measurement. - Rotate drive pinion at least 20 times to check for smooth operation of the bearing.
- Tighten to drive pinion lock nut, while adjust pinion bearing preload torque, using preload gauge [SST: ST3127S000 (J-25765-A)].
Pinion bearing preload
: Refer to FRONT FINAL DRIVE : Service Data .
CAUTION:- Adjust to the lower limit of the drive pinion lock nut tightening torque first.
- After adjustment, rotate drive pinion back and forth 2 to 3 times to check for unusual noise, rotation malfunction, and other malfunctions.
- If the pinion bearing preload torque is outside the specification, use a thicker/thinner drive pinion bearing adjusting washer and drive pinion adjusting washer to adjust.
When the preload torque is large:
Decrease the drive pinion bearing adjusting washer and drive pinion adjusting washer thickness. For selecting adjusting washer, refer to the latest parts information.
When the preload is small:
Increase the drive pinion bearing adjusting washer and drive pinion adjusting washer thickness. For selecting adjusting washer, refer to the latest parts information.
- Remove companion flange, after adjustment.