FRONT AND REAR AXLE DRIVE PINION AND BEARINGS MAINTENANCE
1 7 .
Tightening flange nut (2) as little as 1/8 turn can add up to 5 additional
pound-inches of drag. Flange nut should be tightened only a little at a
time. Exceeding torque specifications may compress spacer (8) on drive
pinion shaft too far and require replacement of spacer.
Measure rotating torque, it should be 20-25 lb.-in. (2-3 N.m) on new bearings, or
101 5 lb.-in, (1-2 N.m) on reused bearings. If rotating torque specifications have not been
reached, tighten flange nut (2). Check rotating torque after each slight amount of tightening.
Rotate drive pinion (3) several times to ensure that bearings are seated. Check preload drag
again. If drag has been reduced, reset preload to specifications.
Connect front or rear propeller shaft to pinion flange. (See TM 9-2320-289-20)
l Install front or rear axle differential. (See paragraph 6-5)