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Maintenance 3.12 - Drive Motors
TM12 Work Platform - European
3.12 D
RIVE
M
OTORS
R
EMOVAL
1. Use a 1000 Kg (one ton) capacity jack to raise the front of the machine. Position blocks
under the machine to prevent the work platform from falling if the jack fails.
2. Block the rear wheels to prevent the machine from rolling.
3. Remove the cotter pin, nut, and washer.
4. Remove the wheel.
NOTE: Before disconnecting hoses, thoroughly clean off all outside dirt around fittings. (After
disconnecting hoses and before removing from vehicle, IMMEDIATELY plug port holes.)
5. Tag, disconnect and plug the hose assemblies to prevent foreign material from entering.
6. Remove the roll pin, securing the pivot pin to the steering arm on the wheel yoke, by driving
it through the steering arm with a punch.
7. Support the drive motor/wheel yoke assembly and remove the retaining ring at the top of the
wheel yoke pivot. Remove the drive motor/wheel assembly from the machine.
8.
Remove the locknuts, flat washers, capscrews and drive motor from the wheel
yoke
.
Figure 3-21:
Drive Motor Assembly
I
NSTALLATION
1. Position the drive motor in
the wheel yoke and secure
with capscrews, flat washers
and locknuts.
2. Install the drive motor/wheel
yoke assembly into the pivot
bearing along with the lower
thrust washer, thrust bush-
ing, and retaining ring.
3. Install the pivot pin in the
wheel yoke steering arm
and steering link and secure
with a new roll pin.
4. Remove the plugs from the
hose assemblies and con-
nect to the drive motor.
5. Install the shaft key, wheel, washer and slotted nut. Torque the locknut to 102 Nm (75 Ft/
Lbs). Install a new cotter pin. DO NOT back-off the nut to install cotter pin.
6. Remove blocks, lower the jack and remove. Operate the drive system and check for leaks.
1. Drive Motor
2. Wheel Yoke
3. Steering Yoke
4. Pivot Pin
5. Roll Pin
6. Retaining Pin
7. Thrust Bearing
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