Gear Replacement:
To access the wheel motor, you need to remove the rear wheel by following the steps below:
The wheel cap is pried off with a large flat screwdriver.
The nut, spring washer, and retaining washer are removed, and the wheel is pulled off (it can be advantageously placed under the robot for support).
Remove the 3 screws in the cover leading to the wheel motor.
Remove the motor from the machine by removing the 6 screws holding it in place.
Pull out the wheel motor and remove the 2 screws holding the coil on the wheel motor.
Remove the 5 small screws holding the gearbox together.
Replace the defective gear with a new one. Make sure to remove all remnants of the old gear so it does not damage other parts.
The replacement is now complete and the wheel motor is reassembled. It is important that the small wave washer in the coil is correctly seated at the bottom of the coil.
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