JLG 4017 Service Manual - Manual (Page 66)

Axles, Drive Shafts, Wheels and Tires
5.4 4017
lubricant can cause gear and bearing failure. Remove old
gasket material from all surfaces.
DRYING: Use clean, lintless towels to dry components
after cleaning. DO NOT dry bearings by spinning them
with compressed air; this can damage mating surfaces
due to lack of lubrication. After drying, lightly coat
components with oil or a rust-preventive chemical to help
protect them from corrosion. If storing components for a
prolonged period, wrap them in wax paper.
PERIODIC OPERATION REQUIREMENT: Every two
weeks, drive the machine far enough to cause the drive-
train components to make several complete revolutions.
This will help ensure that internal components receive
lubrication to minimize deterioration caused by
environmental factors such as high humidity.
SUBMERSION: If the machine has been exposed to
water deep enough to cover the hubs, disassemble the
wheel ends and inspect for water damage and
contamination. If the carrier housing was submerged in
water, especially if the water level was above the vent
tube (breather), drain the axle and inspect internal parts
for water damage and contamination. Before assembling
and refilling the unit with the specified lubricant(s), clean,
examine and replace damaged parts as necessary.
Note: Use a suitable puller for bearing removal. Clean,
inspect and lubricate all bearings just prior to
reassembly. If replacement of a damaged bearing cup or
cone is necessary, replace the cup and cone as a set.
5.3.5 Axle Removal
The front and rear axle assemblies differ in that the front
axle assembly is equipped with a park brake mechanism
and a limited-slip feature; the rear axle has neither. The
following steps outline a typical axle removal
procedure, suitable for either the front or the rear axle
assembly.
Cleanliness is extremely important. Before attempting to
remove the axle, thoroughly clean the machine. Avoid
spraying water or cleaning solution on the stabilizer
solenoids and other electrical components. If using a
steam cleaner, seal all openings before steam cleaning.
IMPORTANT: Clear the work area of all debris,
unnecessary personnel, etc. Allow sufficient space to
raise the machine and to remove the axle.
1. Park the machine on a firm, level surface, fully
retract the boom, lower the boom, place the
transmission control lever in the (N) NEUTRAL,
engage the park brake, straighten all wheels and
shut the engine OFF.
2. Place an Accident Prevention Tag on both the
ignition key switch and steering wheel, stating that
the machine should not be operated.
3. Open the engine cover. Allow the system fluids to
cool.
4. Remove the battery negative (-) cable from the
battery negative (-) terminal.
5. If the axle will be disassembled after removal, place
a suitable receptacle under the axle (1) and wheel
hubs (2) drain plugs. Remove the drain plugs and
allow the axle oil to drain into the receptacle.
Transfer the used axle oil into a suitable covered
container, and label the container as “Used Oil.”
Dispose of used oil at an approved recycling facility.
6. Label, disconnect and cap the steering and brake
lines at the axle. Wipe up any spilled oil.
WARNING:
An improperly supported
machine can fall, causing death or severe
personal injury. Safely raise and adequately
support the machine so that it will remain
stable and in place before attempting to remove
an axle.
MZ1030
1
MZ1060
2