Drive Motors and Hubs
Section 2 - Service and Repair
Page 2-32
114101-000 X26 Ultra Narrow - Service Manual
2-9 D
RIVE
M
OTORS
AND
H
UBS
D
R I V E
M
O T O R S
Figure 2-27:
Drive Motor
R
EMOVAL
1. Chock the rear wheels to prevent the
machine from rolling.
• Use a 1000 Kg (
1 ton
) capacity jack
to raise the front of the machine.
• Place two 1000 Kg (
1 ton
) jack-
stands beneath the machine for sup-
port.
• Remove the jack.
2. Remove the wheel bolts and wheel.
3. Remove the cotter pin, slotted nut,
hub, and shaft key.
4. Remove the hub.
IMPORTANT: Before disconnecting any hoses,
thoroughly clean off all the outside dirt
around the fittings. IMMEDIATELY plug the
holes after disconnecting the hoses and
before removing the motor from the
machine.
5. Tag, disconnect and plug the hose
assemblies to prevent foreign mate-
rial from entering.
6. Remove the locknuts, washers and
capscrews.
7. Remove the drive motor.
I
NSTALLATION
1. Position the drive motor into the wheel yoke and secure it with capscrews and locknuts.
2. Torque the locknuts to 95 N-m (
70 ft./lbs.
).
3. Install the shaft key, hub, and slotted nut. Torque the slotted nut to 190-217 N-m (
140-160 ft./lbs.
).
4. Install a new cotter pin. DO NOT back-off the nut to install the cotter pin.
5. Remove the plugs from the hose assemblies and reconnect them to the drive motor.
6. Install the wheel and wheel bolts. Torque to 108 N-m (
80 ft./lbs.
).
7. Remove the jackstands and lower the machine to the ground.
8. Check the fluid level in the hydraulic reservoir before operating the machine.
9. Operate the drive system and check for leaks.
B
RAKE
S
ERVICE
If brake service or repair is required, replace all servicable parts. Refer to the
Parts Manual
for the brake
service kit part number. Refer to Figure 2-28 when assembling the motor.
Torque the rotor bolts [1] and the front flange bolts [34] to 54 N-m (
40 ft.lbs.
).
6
6
8
7
4
3
5
1
2
6
1. Chassis
2. Wheel Bolts and Wheel
3. Cotter Pin, Slotted Nut and
Shaft Key
4. Hub
5. Hydraulic Hoses
6. Locknuts, Washers and
Capscrews
7. Drive Motor
8. Wheel Yoke