Spicer Single Drive Axles Service Manual: 34DS, 34RS, 38DS, 38RS, DS340, RS340, DS380, RS380, DS400, RS400, DS3 - Manual (Page 33)

Adjustments
30
Ser
vice Procedure
4. Adjust Pinion Bearing Preload - If necessary, adjust pinion bearing preload. Disassemble the pinion bearing cage as recom-
mended in this manual and change the pinion bearing spacer. A thicker spacer will decrease preload. A thinner spacer will
increase preload.
Use the correctly sized spacer, Do not use shim stock or grind spacers. These practices can lead to
loss of bearing preload and gear or bearing failure.
*Torque nut to 840 ft-lbs. (1 139 N.m), Then continue tightening nut to align nut slot to nearest hole in pinion shank.
Measuring Bearing Preload with Pinion in Press
Final Pinion Bearing Preload Test (Slip fit outer pinion bearings)
Axle Model Nut Torque ft. lbs (N.m) Press Load- Tons (Metric
tons) Spring Seal Reading (without
pinion seal)- lbs (kg)
Forward Axle
D340, 380(P), 400-P 560 - 700 (759 - 949) Self
Locking Nut 13.5 - 15.5 (12.2 - 14.0) 5-12 (2.3-5.4)
D341, 381(P), 401-P, 402(P),
403(P), 451-P 780 - 960 (1057-1301) Self
Locking Nut 17 - 19 (15.4 - 17.2) 5-12 (2.3-5.4)
840-1020 (1140-1383) Metric
Nut 17 - 19 (15.4 - 17.2) 5-12 (2.3-5.4)
840* (1139) Slotted Nut and
role pin 17 - 19 (15.4 - 17.2) 5-12 (2.3-5.4)
Rear Axle (All models) 560-700 (759-949) 14-15 (12.7-13.6) 6-14 (2.7-6.4)
IMPORTANT