Adjustment of Thrust Bearing Preload

4. ADJUSTMENT OF THRUST BEARING PRELOAD





1) After completing the preceding steps 1) through 3), select adjusting washer No.2 so that dimension (H) is zero through visual check. Position washer (18.3 x 30 x 4) and lock washer (18 x 30 x 2) and install lock nut (18 x 13.5).





2) Using ST1, ST2 and ST3, tighten lock nut to the specified torque.

ST1 899884100 HOLDER
ST2 498427100 STOPPER
ST3 899988608 SOCKET WRENCH (27)

Tightening torque:
118 ± 8 N.m (12 ± 0.8 kg-m, 86.8 ± 5.8 ft-lb)





3) After removing ST2, measure starting torque using torque driver.

ST1 899884100 HOLDER
ST3 899988608 SOCKET WRENCH (27)

Starting torque:
54 ± 25 N.m (5.5 ± 2.5 kg-m, 40 ± 18 ft-lb)








4) If starting torque is not within specified limit, select new adjusting washer No.1 (2) and recheck starting torque.








5) If specified starting torque range cannot be obtained when a No.1 (2) adjusting washer is used, then select a suitable No.2 (3) adjusting washer from those listed in the above. Repeat steps 1) through 4) to adjust starting torque.
6) Recheck that starting torque is within specified range, then clinch lock nut at four positions.