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Replacing Left or Right Wheel - Junior

To replace Junior’s left or right wheel, you’ll need a Phillips head screwdriver, the flat-head screwdriver included in Junior’s box, and a new left or right wheel.

Before starting any repair on Junior, turn his side power switch OFF and remove his dustbin.

Then, flip Junior over onto a flat surface and remove his main brush using the flat head screwdriver. Keep all removed screws and parts safely aside, as they may be needed for later reassembly.

Use a Phillips head screwdriver to remove the 7 screws on Junior’s underside that hold him together.

Junior’s cover is no longer secured, so hold the top and bottom together as you carefully flip him back onto his wheels. Grip Junior’s cover from the back and lift up to expose the mainboard.

Slide the power inlet down and tuck it somewhere safe to avoid compressing its wires.

To detach Junior’s cover completely, disconnect 4 circuit plugs.

Junior’s cover is now completely detached and can be set aside for the rest of the repair.

You may wish to lift and move the main brush motor and power switch out of the way to reach the screws securing the wheel cover onto Junior.

Remove the wheel cover's 6 screws:

  • 2 screws are next to the mainboard

  • 2 are on either side of the left wheel, one above and one below

  • 2 more screws are on the right wheel, one above and one below

Be sure to keep the wheel’s springs safely on-hand for later reassembly.

Once all 6 screws are removed, lift the wheel cover up and unplug it from the mainboard. Place it aside for now.

Place the new wheel in the open space. You will have to prop up Junior’s back a few inches to insert the wheel.

If you are replacing the left wheel:

  • Feed the wires around the edge of Junior’s bottom before attaching the circuit plug to the mainboard.

  • Ensure the wires are not stuck under the main brush motor or sticking out of place.

If you are replacing the right wheel:

  • Feed the wires around the closest screw post underneath the mainboard.

  • Pull the wires back out before attaching the circuit plug to the mainboard.

Replace the 2 springs on top of the wheels.

Plug the wheel cover back onto the mainboard.

Then, carefully align the cover with the screw posts on Junior. Clear the area of any wires than may become compressed underneath the wheel cover. Make sure the springs on top of the wheels do not move out of place as you push the cover down.

Install all 6 screws previously removed from the wheel cover:

  • 2 just behind the mainboard

  • 2 around the left wheel

  • 2 around the right wheel

Reattach all 4 circuit plugs connecting Junior’s cover to the mainboard.

Remember to slide the power inlet back into its space on Junior’s cover.

Align the cover’s edges precisely. Then, flip Junior over onto a flat surface.

Ensure that no wires are compressed in the main brush compartment or visible at the edges of the bumper. If so, take a step back and lift the cover to tuck the wires into the appropriate spaces inside Junior.

Once the wires are all safely tucked away and Junior’s cover is aligned properly, reinstall all 7 screws previously removed from Junior’s underside.

Install the main brush and dustbin before your next use and Junior is completely reassembled!

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