JLG 4017 Service Manual - Manual (Page 67)

5.5 4017
Axles, Drive Shafts, Wheels and Tires
7. Block the front and rear of both tires on the axle that
is not being removed. Ensure that the machine will
remain in place during axle removal before
proceeding.
8. Raise the machine using a suitable jack or hoist.
Place suitable supports under both sides of the
frame and lower the machine onto the supports.
Ensure that the machine will remain in place during
axle removal.
9. 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.
10. Mark and remove both wheel and tire assemblies
from the axle that is being removed. (Refer to
Section 5.5.1, “Removing Wheel and Tire Assembly
from machine.”)
11. Remove the drive shaft assemblies. (Refer to Section
5.4.3, “Drive Shaft Removal.”)
12. On the front axle remove the capscrew and locknuts
securing the sway cylinder rod end pin to the front
axle. Tap the cylinder mount pin out, and move the
sway cylinder to prevent it from interfering with axle
removal.
13. Remove the four bolts and locknuts securing the
axle to the frame.
14. Remove the axles from the machine using the jack,
hoist or overhead crane and sling supporting the
axle. DO NOT raise or otherwise disturb the machine
while removing the axle. Balance the axle and
prevent it from tipping, turning or falling while
removing it from beneath the machine. Place the
axle on a suitable support or holding stand.
c. Axle Installation
The front and rear axle assemblies differ in that the front
axle assembly is equipped with a park brake mechanism
and limited-slip feature; the rear axle has neither. The
steps below outline a typical axle installation procedure,
suitable for either the front or the rear axle assembly.
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 the axle
housings with the holes in the frame.
5. Install the four axle bolts and nuts. Tighten and
torque to 550 - 600 Nm (406 - 443 lb-ft).
6. Move the sway cylinder into position on the axle
cylinder anchor. Insert a mount pin through the
cylinder rod and cylinder anchor. Secure the sway
cylinder-mount pin with one capscrew and a new
locknut.
7. Apply multi-purpose grease through the self-tapping
lube fitting to lubricate the self-align bearing and the
cylinder-mount pin.
8. Install the drive shaft assemblies. (Refer to Section
5.4.4, “Drive Shaft Installation.”)
9. 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.
10. Install and tighten the three axle oil drain plugs,
loosen and remove the axle oil fill plug (1). Fill the
axle through the axle fill plug until the oil level is even
with the oil check level plugs (2).