Drive Motors; Drive Hubs - Genie S-80 Service Manual

Service Manual
Steer Axle Components
11-2

Drive Motors

How to Remove a Drive Motor
Component damage hazard.
Repairs to the motor should only
be performed by an authorized
dealer.
Component damage hazard. The
work area and surfaces where
this procedure will be performed
must be clean and free of debris
that could get into the hydraulic
system and cause severe
component damage. Dealer
service is recommended.
Note: When removing a hose assembly or fitting,
the O-ring (if equipped) on the fitting and/or hose
end must be replaced. All connections must be
torqued to specification during installation. Refer to
Specifications, Hydraulic Hose and Fitting Torque
Specifications.
1 Extend the axles.
2 Remove the drive motor access covers from
both sides of the inner axle.
3 Tag, disconnect and plug the hydraulic hoses
from the drive motor. Cap the fittings on the
drive motor.
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to
squirt or spray.
4 Remove the drive motor mounting fasteners.
5 Slide the drive motor shaft out of the drive hub,
and remove the drive motor from the machine.
140
11-3

Drive Hubs

How to Remove a Drive Hub
Note: When removing a hose assembly or fitting,
the O-ring (if equipped) on the fitting and/or hose
end must be replaced. All connections must be
torqued to specification during installation. Refer to
Specifications, Hydraulic Hose and Fitting Torque
Specifications.
1 Remove the drive motor. Refer to Repair
Procedure, How to Remove a Drive Motor.
2 Loosen the wheel lug nuts. Do not remove
them.
3 Center a lifting jack of ample capacity under
the non-steer axle.
4 Raise the machine approximately 6 inches /
15 cm and place blocks under the chassis for
support.
5 Remove the wheel lug nuts, then the tire and
wheel assembly.
6 Place a second lifting jack under the drive hub
for support and secure the drive hub to the
lifting jack.
7 Remove the drive hub mounting fasteners that
attach the drive hub to the axle. Remove the
drive hub.
Note: Do not re-use the drive hub mounting
fasteners. Genie specifications require the use of
new fasteners.
S-80 • S-85 • S-80X
February 2017
Crushing hazard. The drive hub
could become unbalanced and
fall if not properly supported by
an overhead crane or lifting
device when removed from the
machine.
Part No. 1259369GT