JLG 460SJ Service Manual - Manual (Page 93)

SECTION 3 - CHASSIS & TURNTABLE
3120895 – JLG Lift – 3-41
3.10 2WD HUB
Removal & Disassembly
1. Remove the tire and wheel. Refer to Section 3.1,
Tires & Wheels.
2. Remove the dust cap.
3. Remove the cotter pin securing the castle nut.
4. Remove the castle nut. Pull the hub assembly off of
the spindle being careful not to let the outer bearing
cone fall. The inner bearing and seal will come off
with the hub.
5. Use the inner cone and a mild steel bar to drive the
seal out of the hub. Take care to ensure the bar
doesn’t damage the bearing cone or cage.
Cleaning & Inspection
1. Remove all the old lubricant from the hub and spin-
dle, then clean them with kerosene or mineral oil.
Inspect the spindle for scoring, bending, thread or
other damage. File off nicks and burrs. A light
grease coating on the cone seats will make installa-
tion easier and help prevent fretting.
2. Inspect the cups in the housing for pitting, metal
flaking, scoring, rust, or other obvious damage.
Remove the damaged cups with a mild steel bar.
Replace the cups and mating cones. Inspect the
hub bore and cup backing shoulder and remove
nicks and burrs that may prevent the cup from seat-
ing properly.
3. Using a long-bristled brush and kerosene or mineral
oil, wash all the old lubricant off of the bearing
cones. Allow the cones to air dry. Do not spin the
rollers with air as this may damage the cone. Inspect
the cones for wear, metal flaking, rust, cage dam-
age, or other visible defects. Replace all damaged
cones and mating cups.