Spicer Tandem Drive Axles Service Manual D170, D190, and D590 Series - Manual (Page 37)

33
Drive Pinion
TIP: A torquing wedge can be made to hold the heli-
cal gear from turning while the nut is torqued.
18. Install the wedge between the carrier wall and the
teeth of the helical gear.
19. Torque the nut to 800-1000 lbs. ft.
(1084-1355 N•m).
TIP: If you are unable to torque the yoke nut cor-
rectly, try torquing the nut with the truck wheels on
the ground and with the axle shafts installed.
20. Use an lbs. in. torque wrench and correct socket to
check the rolling torque of the pinion. Read torque
while rotating the assembly. Record the rotating
torque, not the breakaway torque. Torque must be
between 20 to 50 lbs. in. If the torque recorded is not
within the specified torque, the pinion spacer must
be changed. Repeat Steps 6-17.
21. Once the proper rolling torque is achieved, use a
punch with a round head to stake the nut collar into
the slot in the pinion.
Note: Always use a new nut and coat threads with Loctite 277
if not pre-coated.
1
1 - Wedge
Drive Pinion