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1. Axle (spacer nut still
assembled)
2. Hub
3. Bearing
2.
Remove 1 of the spacer nuts from the axle
assembly in the caster wheel
Note:
Note that thread-locking compound has
been applied to lock the spacer nuts to the axle
(Figure
28).
3.
Remove the axle (with the other spacer nut still
assembled to it) from the caster-wheel assembly
(Figure
28).
4.
Pry out both bearing seals
Note:
Discard the old seals.
5.
Remove both bearings and inspect them for
wear or damage
Note:
Replace the bearing if it is worn or
damaged.
6.
Pack the 2 bearings with the specified grease.
Assembling the Caster-Wheel Hub
1.
Install 1 bearing into the hub of the wheel
28).
2.
Install the bearing seal into the hub at the
bearing
(Figure
28).
3.
If you removed (or broke loose) both of the
spacer nuts from the axle assembly, perform
the following:
A.
Clean the threads of the axle and spacer
nut.
B.
Apply a thread-locking compound to the
threads at 1 end of the axle.
C.
Thread the axle nut, with the wrench flats
facing outward, onto the end of the axle that
is prepared with thread-locking compound
(Figure
28).
Note:
Do not thread spacer nut all of the
way onto the axle. Leave approximately 3
Figure 28
4. Spacer nut
5. Bearing seal
6. Seal guard
(Figure
28).
(Figure
28).
(Figure
28).
mm (1/8 inch) from the outer surface of the
spacer nut to the end of the axle inside the
nut.
4.
Insert the assembled nut and axle into the wheel
at the side of the wheel with the new seal and
bearing
5.
With the open end of the wheel facing up, fill the
area inside wheel cavity (around the axle) with
the specified grease.
g025954
6.
Install the other bearing and new seal into the
wheel
7.
Apply a thread-locking compound to the second
spacer nut and thread it onto the axle with the
wrench flats facing outward.
8.
Torque the spacer nut to 8 to 9 N∙m (75 to 80
in-lb), loosen, then torque it 2 to 3 N∙m (20 to
25 in-lb).
Note:
beyond either nut.
9.
Install the seal guards over the wheel hub
(Figure
Installing the Caster-Wheel Assembly
1.
Align the hole in the axle of the caster-wheel
assembly between the holes in the fork of the
caster
2.
Secure the wheel assembly to the fork with the
wheel nut and bolt
in step
Assembly (page
3.
Torque the wheel nut to 91 to 113 N∙m (67 to
83 ft-lb).
(Figure
31
(Figure
28).
(Figure
28).
Make sure axle does not extend
28).
(Figure
27).
(Figure
27) that you removed
3
of
Removing the Caster-Wheel
30).
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