Drive Motor; Removal; Ball Bearing Repair/Replacement; Assembly/Disassembly - JLG H340AJ Service And Maintenance Manual

SECTION 3 - CHASSIS & TURNTABLE

3.7 DRIVE MOTOR

Removal

NOTE: Refer Figure 3-6., Drive Motor.
1. Place machine on the firm level surface.
2. Disconnect the battery power and all electrical connec-
tions from the drive motor.
3. Use suitable lifting device to support the drive motor.
NOTE: The drive motor weighs approximately 65 lbs. (30 kg).
4. Remove six bolts attached drive motor to the frame.
5. Remove the motor from machine and place in a clean
work area.
6. Clean the motor for dirt. Remove rust or corrosion from
coupling shaft.

Ball Bearing Repair/Replacement

Both ball bearings are maintenance free. If the bearings are
removed, they must be replaced along with any seals.
If a bearing which is to be replaced has only one sealing lip,
this should be greased with quality bearing grease. After
approximately 10,000 operating hours, the bearings have to
be replaced.
3-10
FLANGE
DRIVE HUB
BOLT
&
WASHER
Figure 3-6. Drive Motor

Assembly/Disassembly

The drive motor is assembled and disassembled according to
Part manual drawing. Refer Figure 3-7., Drive Motor Assembly.

Installation

1. Use suitable lifting device to support the drive motor.
NOTE: The drive motor weighs approximately 65 lbs. (30 kg).
2. Install the drive motor to the machine.
INCORRECT SHAFT ALIGNMENT MAY RESULT IN DAMAGE TO DRIVE SHAFT,
BEARINGS, OR SEAL WHICH CAN CAUSE EXTERNAL OIL LEAKAGE.
3. Make sure that the pump shaft is properly aligned.
4. Use the six bolts and attach the drive motor to the
machine. Tighten the bolts to torque 75 ft. lbs. (55 Nm).
NOTE: Apply JLG Threadlocker P/N 0100011 to bolts before instal-
lation.
5. Install drive brake on to the drive motor.
6. Reconnect all electrical connections to the drive motor.
7. Start the machine and check the motor for proper func-
tioning.
BOLT
DRIVE MOTOR
BOLT
&
WASHER
MAE16260
3121634