JLG GRADALL 522, Owner'S/Operator'S Manual

Page: 92 / 288

2
Se c t ion 2
Re m ova l a nd Disa sse m bly
Remove Axle
WARNING
To prevent serious eye injury, always wear safe
eye protection when you perform vehicle
maintenance or service.
WARNING
Support vehicle with safety stands. Do not work
under a vehicle only supported by jacks. Jacks
can slip or fall over and cause serious personal
injury.
NOTE
While the housing configuration of the axle you
service may differ from the figures shown,
service instructions remain the same for all axle
models addressed in this manual.
1. Make sure vehicle is on level surface.
2. Place blocks under wheels not being serviced to
keep vehicle from moving.
3. Raise vehicle so that wheels to be serviced are
off the ground. Support vehicle with safety
stands.
4. Remove axle from vehicle.
5. Plug fluid lines that were connected to axle.
6. Place axle in appropriate repair stand. Center
main housing on stand. Figure 2.1.
7. Remove drain plugs from brake housing and
main housing with 12 mm Allen wrench. Drain
axle oil.
!
!
Disassemble Ball and Ramp
Brake
NOTE
•
Identify all parts before disassembly to ensure
proper reassembly.
•
To disassemble hydraulic apply wet disc
brake, go to page 5.
•
To disassemble three function brake, go to
page 5.
Figure 2.2.
1. Remove brake cylinder cover.
2. Remove nut and nut lock.
3. Loosen brake cylinder capscrews.
4. Remove brake cylinder assembly from main
housing.
Figure 2.2
Figure 2.1
CAP
LOCK NUT
O-RING
WITHOUT
HYDRAULIC
PRESSURE
BRAKE
CYLINDER
ADJUSTING
NUT
SPRING
PISTON
O-RING
BRAKE
CYLINDER
SUPPORT
The PROA 352 axle is shown to illustrate
procedures in this maintenance manual
Courtesy of Crane.Market