Service Manual

Front Wheel Drive
Section (4WD)
Front Wheel Bearing
Disassembly (Fig. 2)
1. Park machine on a level surface. Make sure engine
is of
f. Set parking brake and block rear wheels.
2. Partially loosen lug nuts (1). Jack up and secure
front wheel
off the ground (see Jacking Vehicle in Chap-
ter 1 – Safety). Remove lug nuts and wheel from the
brake drum (32).
3. Remove brake drum (32) from the cap screws (3)
and stub axle (31).
2
4. Remove flange lock nut (36) and flat washer (35)
from the threaded shaft of the CV joint (15) and stub axle
(31).
5. Pull stub axle (31) and bearing (14) cone from the
axle housing (28). Remove large spacer (30) and small
spacer from the axle housing. Remove remaining bear-
ing (14) cone from the housing.
9
5
3
4
9
6
7
1
10
Figure 3
6. Remove cap screw (9) and flat washer (10) securing
1. Axle housing
6. Cap screw
the brake hose bracket (12) to the axle housing (28).
2. Cotter pin
7. Lower ball joint
3. Slotted hex nut 8.
CV joint
9. Ball joint seal
7. Remove four cap screws (6) and lock washers (7)
4. Upper ball joint
10. Bearing cone 5. Lock nut
securing the brake assembly (5) to the axle housing
(28). Secure assembly clear of the housing.
8. Remove cotter pin (16) and slotted hex nut (17) from
the tie rod end assembly (20). Disconnect
end assembly
CUP
from the axle housing (28).
ROLLER
SEAL
9. Remove axle housing (28) from the suspension as
follows (Fig. 3):
A. Remove cotter pin and slotted hex nut from the
upper ball joint. Separate upper ball joint from the
CONE
axle housing.
B. Remove lock nut and cap screw from the axle
CAGE
housing. Separate lower ball joint from the axle
housing. Separate axle housing from the CV joint.
C. Remove remaining bearing cone from the hous-
ing.
Figure 4
Inspection (Fig. 2)
B. The rib face on the cone is worn back, or roller
ends are worn or scored. The roller cage is cracked
IMPORTANT:If any part of a bearing (14) needs re-
or broken.
placement, replace bearings as a matched set.
C. Peeling, gouges, or nicks inside the cup or on
1. If foreign material is in the bearing, clean bearing
rollers. Scalloping, high spots, brinelling, or burrs in
and determine cause of the material. Replace bearings
the cups.
(14) if any of the following conditions occur (Fig. 4):
D. The seal attached to the bearing cone is
A. Spalling or pitting on roller or cone contact sur-
cracked, torn, or damaged.
faces. Corrosion that can not be cleaned up with
light polishing.
Workman 4000 Series Page 10
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Rev. B
Front Wheel Drive Section (4WD)
8