JLG G6-23A Service Manual - Manual (Page 47)

5.5 G5-19A, G6-23A
Axles, Drive Shafts, Wheels and Tires
prevent it from tipping, turning or falling while
removing it from beneath the machine. Place the
axle on a suitable support or holding stand.
5.3.6 Axle Installation
1. Before proceeding, ensure that the machine will
remain in place during axle installation. Block the
front and rear of both tires on the axle that is already
installed on the machine.
2. If applicable, raise the machine using a suitable jack
or hoist. Place suitable supports beneath the frame
and lower the machine onto the supports, allowing
enough room for axle installation. Ensure that the
machine will remain in place during axle installation.
3. Using a suitable jack, hoist or overhead crane and
sling, remove the axle from its support or holding
stand. Balance the axle and prevent it from tipping,
turning or falling while positioning it beneath the
machine. DO NOT raise or otherwise disturb the
machine while installing the axle. Keep the axle
supported and balanced on the jack, hoist or
overhead crane and sling throughout the installation
procedure.
4. Position the axle under the frame, and align with the
holes in the frame.
5. Install the axle with capscrews, locknuts and the axle
plates. Torque the front and rear axles of the G5-19A
to 495 lb-ft (671 Nm). Torque the front axle of the
G6-23A to 863 lb-ft (1170 Nm) and the rear axle to
495 lb-ft (671 Nm).
6. Install the drive shaft assemblies. (Refer to Section
5.4.5, “Drive Shaft Installation.”)
7. If reinstalling an axle previously removed from the
machine, position the driveshaft yoke on the axle
according to the alignment marks made earlier. If
installing a new axle, note the position of the
driveshaft yoke at the transmission. Align the
driveshaft yoke on the axle in the same plane as the
yoke on the transmission.
8. Tighten the axle oil drain plug, loosen and remove
the axle oil fill plug. Fill axle with the appropriate oil.
Refer to Section 2.4, “Fluids, Lubricants and
Capacities,” for proper oil and capacities.
9. Rotate wheel hubs 90 degrees so the drain plug
becomes the fill plug. Fill wheel hubs with the
appropriate oil. Refer to Section 2.4, “Fluids,
Lubricants and Capacities,” for proper oil and
capacities.
10. Install the wheel and tire assemblies. (Refer to
Section 5.5.2, “Installing Wheel and Tire Assembly
onto Machine.”)
11. Carefully remove the jack, hoist or overhead crane
and sling supporting the axle.
12. Carefully raise the machine using a suitable jack or
hoist. Remove the supports from beneath the frame
and lower the machine to the ground.
13. Remove the blocks from the front and rear of both
tires on the other axle.
14. Uncap and reconnect the steering and brake lines at
their axle fittings. Refer to Section 8.10.4, “Brake
Test,” for brake bleeding procedures.
15. Check the hydraulic reservoir oil level.
16. Connect the battery negative (-) cable to the battery
negative (-) terminal.
17. Close and secure the engine cover.
18. Start the engine. Turn the steering wheel several
times lock to lock and check the function of the
brakes. Check for hydraulic leaks, and tighten or
repair as necessary.