Spicer Single Drive Axles Service Manual: S170, S190, S590 - Manual (Page 23)

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Drive Pinion
Drive Pinion
17. Now remove the pinion nut and yoke and install the
pinion seal. Use Spicer’s seal drive (part number
210749) and drive adapter (part number 131472).
18. Reinstall the yoke and pinion nut. Torque to 800-
1000 lbs. ft.
19. Once the proper rolling torque is achieved, use a
punch with a round tip to stake the pinion nuts
flange into the machined slot in the pinion shaft. See
diagram below.
The stake must be deep enough to enter the machined slot
of the pinion. See diagram below.
Failure to stake the pinion nut properly may result in the nut
coming loose during service. The pinion nut should never
be reused, always replace with new.
20. If a pilot bearing web is used, lineup the web to
the locating sleeves and tap in place with a rubber
mallet.
21. Install capscrews and torque to the proper specifica-
tions. See the Torque Chart .
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.
CAUTION
1 - Round Tipped Chisel
2 - Nuts Staking Flange
3 - Machined Slot In Pinion
WARNING
1 - Locating Sleeves
1
2
3
1
1