Install bearing adjusting nut (15). Tighten the nut with
Tool (C) to a torque of 135 N· m (100 lb-ft), while
rotating the wheel hub assembly in both directions. Rap
the wheel hub assembly with a soft faced hammer; then
re-tighten the nut again to a torque of 135 N· m (100 lb-
ft). Repeat this procedure until the nut will not advance
with the application of 135 N· m (100 lb-ft) of torque.
Loosen the bearing adjusting nut to relieve the preload
on the bearings. The torque on the bearing adjusting
nut should be zero.
Determine the wheel hub assembly rolling torque. This
torque value must be obtained while the hub is being
rotated at a steady rate (not starting torque). Use a flat
bar with a welded nut in the center, attached to the face
of the hub. Use a torque wrench to turn the hub. Note
the rolling torque.
An alternate method for determining wheel hub
assembly rolling torque is to wind a cord around the hub
barrel. Attach a spring scale to the cord, and pull it
straight out at a steady rate. Torque in units of lb-ft. =
(Ib. pull X inches of hub barrel radius) divided by 12.
Tighten bearing adjusting nut (15), and recheck the hub
rolling torque. The increase in rolling torque from Step
19 to Step 20 should be 4 to 7 N· m (3 to 5 lb-ft) if new
beatings are used. If the beatings are reused, the
torque increase should be 2.0 to 3.4 N· m (1.50 to 2.50
Install pin (14) in the adjusting nut.
Press ring gear (13) into place on the carrier. Pin (14)
must line up with hole (20) on the back side of the ring
Install axle shaft (12) into the axle assembly. The
splines on the end of the axle shaft must engage with
the internal splines in the differential.
Install sun gear (11) and a new snap ring (10) to hold it
Assemble the planetary spider assembly as follows:
Check the condition of the bores in planetary
gears (7). If the bores are rough or worn, use
new parts for replacement.
Install planetary shafts (8) in the spider with a
press. Install set screws (9). Put a thin coat of
oil in the bores of planetary gears (7). Install the
planetary gears on the planetary shafts. Install
washers (6) and new snap rings (5) to hold the
Install thrust button (4) in the spider.
Be sure the mounting flange on the planetary spider
assembly and the mounting face on the wheel hub
assembly are clean and free of dir. Put a bead of 8T-
9022 General Purpose Adhesive Sealant on the face
of the wheel hub assembly. Be sure the adhesive
sealant goes around the inner edge of all fastener holes
to ensure complete sealing.
Fasten Tool (A) and a hoist to planetary spider
assembly (2). Put the planetary spider assembly in
position on the wheel hub assembly, aligning the gear
teeth of the planetary gears with the teeth on the sun
gear and ring gear. Align the match marks on the
planetary spider assembly and the wheel hub assembly.
Install sixteen bolts (1) that hold the planetary spider
assembly to the wheel hub assembly. Tighten the bolts
to a torque of 90 to 125 N· m (65 to 90 lb-ft).
Fill the wheel end assembly with oil to the correct level.
See, "Planetary" in the Operation & Maintenance
Install wheel and tire assemblies