JLG G6-42A Service Manual - Manual (Page 92)

Axles, Drive Shafts, Wheels and Tires
5-4 G6-42A, G9-43A, G10-43A
5.2 AXLE SERIAL NUMBER
Front and rear axle serial number plate is located on a
mounting pad on front side of center section of each axle.
Information on serial number plate is required in
correspondence regarding axle.
Supply information from the axle serial number plate
when communicating about an axle assembly or
axle components.
5.3 AXLE SPECIFICATIONS AND
MAINTENANCE INFORMATION
For oil specifications and maintenance information, refer
to Section 2, “General Information and Specifications.”
Detailed axle service instructions are provided in the
following publications:
G6-42A
• Service Manual (P/N 31200162)
• Parts Manual (P/N 31200727)
G9-43A and G10-43A
• Service Manual (P/N 31200239)
• Parts Manual (P/N 31200727)
5.4 AXLE REPLACEMENT
5.4.1 Axle Removal
Front and rear axle assemblies differ in that front axle
assembly is equipped with a parking brake mechanism
and a limited-slip feature; rear axle has neither. Following
steps outline a typical axle removal procedure, suitable
for either front or rear axle assembly.
Cleanliness is extremely important. Before attempting to
remove the axle, thoroughly clean the machine. Avoid
spraying water or cleaning solution on electrical
components. If using a steam cleaner, seal all openings
before steam cleaning.
Note: Clear the work area of all debris, unnecessary
personnel, etc. Allow sufficient space to raise the
machine and to remove the axle.
1. Park machine on a firm, level surface, level machine,
fully retract boom, lower boom, place transmission
control lever in the (N) NEUTRAL position, engage
parking brake, straighten all wheels and shut the
engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and steering wheel.
3. Open engine cover. Allow the system fluids to cool.
4. Properly disconnect the battery.
5. Remove the optional fender assembly.
6. If axle will be disassembled after removal, place a
suitable receptacle under axle (1) and wheel hubs
drain plugs (2). Remove drain plugs and allow axle
oil to drain into receptacle. Transfer used axle oil into
a suitable covered container, and label container as
“Used Oil.” Dispose of used oil at an approved
recycling facility.
7. Label, disconnect and cap the steering and brake
lines at the axle. Wipe up any spilled oil.
8. Block front and rear of both tires on axle that is not
being removed. Ensure that machine will remain in
place during axle removal before proceeding.
9. Raise machine using a suitable jack or hoist. Place
suitable supports under both sides of frame and
lower machine onto supports. Ensure that machine
will remain in place during axle removal.
10. Support the axle that is being removed with a suitable
jack, hoist or overhead crane and sling. DO NOT
raise the axle or the machine.
11. Remove both wheel and tire assemblies from axle
being removed. (Refer to Section 5.6.1, “Wheel and
Tire Assembly Removal.”)
Note: The wheel and tire assemblies must be re-installed
later with the directional tread pattern “arrows” facing in
the direction of forward travel.
12. Remove the drive shaft assembly. Refer to Section
5.5.3, “Drive Shaft Removal.”
13. On the front axle, remove the capscrew and locknuts
securing the lower position cylinder-mount pin to the
front cylinder. Tap the cylinder mount pin out, and
move the cylinder to prevent it from interfering with
axle removal.
14. Remove bolts and locknuts securing axle to frame.
WARNING
DO NOT service the machine without following all
safety precautions as outlined in Section 1, “Safety
Practices,” of this manual.
MY4180
2 1 1 2