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5. REPAIR INSTRUCTIONS
5.19 Replacing the wheel motor
The wheel motors can be replaced without dismantling
the chassis.
1. Unscrew the wheel hub (one screw hex 5) on the
wheel where the wheel motor is to be replaced.
2. Lift off the wheels.
3. Unscrew the four screws holding the wheel
motor, torx 20.
4. Lift out the motor.
5. Carefully remove the cable from the motor.
6. Secure the cable on the new motor.
7. Fit the new motor.
NOTE! The motor must be fitted so that the axle
runs through the top part of the hole.
8. Replace the wheel. Make sure they are fitted to
the right axle.
9. Replace the hub.
It is not necessary to apply new thread locking
fluid. The screws can be reused about
5 – 10 times.
10. Check that the wheel motor works.
5.20 Replacing the hub
Instructions for replacing the wheel motor's hexagonal
hub:
1. Undo the ESD plug as well as the screw in the
centre of the drive wheel (5 mm hexagonal
wrench).
2. Remove the wheel and the hub cap.
3. Undo the four screws at end of the wheel motor
(T20).
4. Carefully pull the motor out and disconnect the
connector.
5. Screw an M8 screw of at least 30 mm (1.2”) into
the centre of the hub as an extractor. The
hardness of the screw should be 8.8 or greater, to
prevent damage to the threads.
6. Turn the screw until the hexagonal hub is
completely pulled out from the wheel motor shaft.
7. Heat the new hexagonal hub using a hot air gun or
similar to enlarge the diameter of the hole. The
temperature of the hexagonal hub should be
150-200 ºC (300-400 ºF).
8. Carefully install the heated hub on the wheel
motor shaft. Press the hub all the way down until it
rests against the threads, this is to maintain
complete functionality of the labyrinth seal.
IMPORTANT INFORMATION
Ensure that there is no dirt between the
motor and the chassis. Also make sure that
the seal is seated correctly.
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