Depress the spring to the left wheel well housing and push the wheel inside of it, keeping tension on the spring. Ensure that the spring rests on the wheel bushing.

Move the sensor wires running along the outside of the case up and over the screw peg temporarily.

Ensure that the rubber grommet which routes power to the wheel motors is positioned in its half-moon seat. This grommet is located towards the front center of the unit.

Seat the wheel well into position, and, while still applying pressure to the wheel, install two silver 10mm screws into opposing corners of the housing.

Ensure that no wires have become trapped.

Install the final two silver 10mm screws.