Assembly & installation, Assembly & installation -42, 2wd hub -42 – JLG 460SJ Service Manual User Manual
Page 94
SECTION 3 - CHASSIS & TURNTABLE
3-42
– JLG Lift –
3120895
Assembly & Installation
1. Use a cup driver or mild steel bar to press or drive
the new cup into the hub until it is solidly seated
against the rotor hub shoulder. Be careful not to
damage the cup surfaces. Never use a cone to drive
a cup.
2. Re-pack the cones immediately after inspection or
when installing a new cone. A pressure grease
packer is suggested.
FAILURE TO CORRECTLY LUBRICATE THE BEARING AND MAIN-
TAIN PROPER LUBRICATION MAY RESULT IN BEARING DAMAGE
WHICH COULD CAUSE THE WHEEL TO LOCK UP OR COME OFF.
3. Grease seals must be replaced when they leak or
when bearings are being repacked or replaced.
Install the inner cone in the hub, then the seal. Make
sure the seal lips are pointed in the right direction.
Use the proper seal installation tool.
4. Slide the hub assembly back over the spindle, tak-
ing care not to damage the seal against the spindle
outer end or threads. Insert the grease-packed outer
cone, spindle washer, and castle nut.
5. Tighten the adjusting nut while turning the hub.
When the hub binds slightly, all parts are properly
seated. Back off the nut 1/5 to 1/4 turn or sufficiently
to allow 0.001 to 0.010" end play, then lock the nut
with a new cotter pin.
FAILURE TO BACK OFF THE ADJUSTING NUT WILL CAUSE THE
BEARING TO RUN HOT AND BE DAMAGED WHICH COULD CAUSE
THE WHEEL TO LOCK UP OR COME OFF.
6. Use a dial indicator to measure end play. Mount the
indicator base as close to the center of the hub as
possible. With the indicator tip against the end of the
spindle, set the indicator at zero. Grasp the hub at 9
o’clock and at 3 o’clock. Push the hub in and out
oscillating it at the same time to seat the parts. Read
the bearing end play as the total indicator move-
ment.
2
8
6
4
5
7
11
9
12
3
13
10
1
Figure 3-30. 2WD Hub
1. Dust Cap
2. Spindle
3. Hub
4. Inner Bearing Cup
5. Outer Bearing Cup
6. Inner Bearing Cone
7. Outer Bearing Cone
8. Seal
9. Castle Nut
10. Cotter Pin
11. Spindle Washer
12. Wheel Stud
13. Lug Nut