Wheel Drive Assembly; Removal; Installation - JLG 400S Service And Maintenance Manual

3.8 WHEEL DRIVE ASSEMBLY

Removal

NOTE: The drive motor can be removed through the axle flange as
part of the wheel drive assembly or they can be removed
separately through the bottom of the frame while leaving
the drive hub bolted to the axle.
1. Use a jack to lift the frame enough so the tire and wheel
assembly is off the ground. Place blocking strong
enough to support the weight of the machine under the
frame and remove the jack.
NOTE: The pneumatic tire & wheel assembly weighs approxi-
mately 170 lbs. (77 kg). The foam-filled tire & wheel assem-
bly weighs approximately 440 lbs. (200 kg). The solid tire &
wheel assembly weighs approximately 286 lbs. (130 kg).
2. Remove hardware securing wheel and remove wheel
assembly. Using suitable lifting device lift the wheel
assembly and place in a suitable area.
3. Tag and disconnect the hydraulic lines running to the
drive motor. Cap or plug all openings to ensure no dirt
enters the hydraulic system.
3121671
NOTE: The drive hub and drive motor assembly weighs approxi-

Installation

DRIVE MOTOR
BRAKE GASKET
WASHER
CAPSCREW
WHEEL
Figure 3-4. Wheel Drive Installation
SECTION 3 - CHASSIS & TURNTABLE
mately 149 lbs. (68 kg).
4. Use a supporting device capable of handling the weight
of the drive hub and drive motor, and unbolt the drive
hub from the frame. Remove the entire assembly from
the machine.
5. Remove the capscrews and washers that secure the
drive motor to the drive hub and remove the drive
motor. Remove and discard the brake gasket between
the drive motor and drive hub.
1. Install a new brake gasket between the drive motor and
drive hub. Apply a coat of JLG Threadlocker P/N 0100011
on capscrews. Install the washers and capscrews to
secure the drive hub and drive motor, and torque to
70 ft. lbs. (95 Nm).
2. Place the drive hub flange against the mounting flange
on the axle and fasten it in place with the bolts and
washers. Torque the bolts to 190 ft. lbs. (258 Nm).
3. Using adequate support, install wheel into wheel
assembly and secure with bolts and washers. Torque the
lugnuts to 170 ft. lbs. (230 Nm).
DRIVE HUB
LUGNUT
MAF00530
3-7