Pinion Bearing Preload
WARNING: This page is about a different car, the 2008 Infiniti M45 and 2008 Infiniti M35. However, it is still accessible from the selected car via links, so may be relevant.
- Assemble the drive pinion parts if they are disassembled. Refer to "DRIVE PINION ASSEMBLY ".
- Make sure all parts are clean. Also, make sure the bearings are well lubricated with gear oil.
- Install companion flange (1).NOTE: When reusing drive pinion, align the matching mark (B) of drive pinion with the matching mark (A) of companion flange, and then install companion flange (1).
- Temporarily tighten removed drive pinion lock nut to drive pinion.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.
Tool number A: ST3127S000 (J-25765-A)
Drive pinion lock nut tightening torque:
127.4 - 245.0 N.m (13.0 - 25.0 kg-m, 94 - 181 ft-lb)
Pinion bearing preload:
0.78 - 1.57 N.m (0.08 - 0.16 kg-m, 7 - 13 in-lb)
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. Refer to
"DRIVE PINION BEARING ADJUSTING WASHER " and
"DRIVE PINION ADJUSTING WASHER ".
When the preload torque is large:
Decrease the drive pinion bearing adjusting washer and drive pinion adjusting washer thickness.
When the preload is small:
Increase the drive pinion bearing adjusting washer and drive pinion adjusting washer thickness.
- Remove companion flange, after adjustment.