Axle Replacement - JLG sky trak mmv Service Manual

PERIODIC OPERATION REQUIREMENT: Every two
weeks, drive the vehicle far enough to cause the drive-
train components to make several complete revolutions.
This will help assure that internal components receive lu-
brication to minimize deterioration caused by environ-
mental factors such as high humidity.
SUBMERSION: If the vehicle 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 re-
place damaged parts as necessary.
Note: Use a suitable puller for bearing removal. Clean,
inspect and lubricate all bearings just prior to reassem-
bly. If replacement of a damaged bearing cup or cone is
necessary, replace the cup and cone as a set.
5.2.6

Axle Replacement

a. Removal
WARNING:
ported vehicle can fall, causing death or
severe personal injury. Safely raise and ade-
quately support the vehicle so that it will
remain stable and in place before attempting to
remove an axle.
WARNING:
cause severe burns. Wait for the hydraulic fluid
to cool before servicing any hydraulic compo-
nent.
WARNING:
sure before servicing any hydraulic compo-
nent. Escaping hydraulic fluid under pressure
can penetrate the skin, causing death or seri-
ous injury.
The front and rear axle assemblies differ in that the front
axle assembly is equipped with a parking brake mecha-
nism and 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.
Model MMV Rev. 12/04
An improperly sup-
Hot hydraulic fluid can
Relieve hydraulic pres-
Axles, Wheels and Tires
Cleanliness is extremely important. Before attempting to
remove the axle, thoroughly clean the vehicle. Avoid
spraying water or cleaning solution on the stabilizer sole-
noids and other electrical components. If using a steam
cleaner, seal all openings before steam cleaning.
IMPORTANT: Clear the work area of all debris, unnec-
essary personnel, etc. Allow sufficient space to raise the
vehicle and to remove the axle.
1. Park the vehicle on a firm, level surface, level the
vehicle, ground the attachment, place the travel select
lever in the [N] NEUTRAL position, place the neutral
lock lever in the [N] NEUTRAL LOCK position, engage
the parking brake switch, straighten all wheels and
shut the engine OFF.
2. Place an Accident Prevention Tag on both the
ignition switch and steering wheel, stating that the
vehicle should not be operated. (Refer to Section
1.5, Accident Prevention Tag Usage .)
3. Open the engine compartment cover. Allow the
engine, transmission and hydraulic fluid to cool.
4. Remove engine side battery box cover (1). Remove
wing nuts (2) and carriage bolts (3) and set cover
and mounting hardware aside for later re-assembly.
5. Disconnect the negative (-) battery cable (4) at the
negative (-) terminal on the battery in the engine side
battery box.
6. Disconnect the negative (-) cable (5) at the bottom of
the battery equalizer (6).
2
1
3
6
5
4
MM2911
5.5