Adjustment

DRIVE PINION

Adjustment


PINION GEAR HEIGHT

If the hypoid gear set has been replaced, select the pinion height adjusting washer.





1.Use the formula below to calculate pinion height adjusting washer thickness.





2.Select the proper pinion height adjusting washer. For selecting adjusting washer, refer to the latest parts information.
If unable to find a washer of desired thickness, use a washer with thickness closest to the calculated value.





PINION BEARING PRELOAD

Assemble the drive pinion parts if they are disassembled. Refer to "Assembly" Assembly.
1.Make sure all parts are clean. Also, make sure the bearings are well lubricated with gear oil.
2.Install companion flange.
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).





3.Temporarily tighten removed drive pinion lock nut to drive pinion, using flange wrench (commercial service tool).





NOTE:
Use removed drive pinion lock nut only for the preload measurement.
4.Rotate drive pinion at least 20 times to check for smooth operation of the bearing.
5.Tighten to drive pinion lock nut, while adjust pinion bearing preload torque, using preload gauge [SST: ST3127S000 (J-25765A)].





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.
6.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.





7.Remove companion flange, after adjustment.

COMPANION FLANGE RUNOUT






1.Fit a dial indicator onto the companion flange face (inner side of the propeller shaft mounting bolt holes).
2.Rotate companion flange to check for runout.





3.Fit a test indicator to the inner side of companion flange (socket diameter).
4.Rotate companion flange to check for runout.





5.If the runout value is outside the runout limit, follow the procedure below to adjust.
a.Check for runout while changing the phase between companion flange and drive pinion by 90� step, and search for the position where the runout is the minimum.
b.If the runout value is still outside of the limit after the phase has been changed, possible cause will be an assembly malfunction of drive pinion and pinion bearing and malfunction of pinion bearing. Check for these items and repair if necessary.
c.If the runout value is still outside of the limit after the check and repair, replace companion flange.