Replace the Bumper on BObi Pet

bObi Pet's bumper holds many components that are integral to proper operation, including the wall or obstacle detection sensors, and touch sensors. For many issues bObi Pet may be having, changing the whole front bumper may be a solution.

Using a Phillips head screwdriver and a new bumper for bObi Pet, you can do this repair yourself. Be mindful of all parts removed from bObi Pet as they may be needed for reassembly.

Step 1: Turn BObi Pet Off

Before starting any repair, turn bObi Pet OFF and flip her over onto a flat surface.

Next, remove the dustbin. Grip the button on the back and pull.

Step 2: Remove the Front Wheel

Remove bObi Pet’s front wheel. Grip the wheel with your hand and pull it straight up. You may use a tool like a screwdriver for leverage.

Behind the wheel are two screws. Use the screwdriver to remove the larger screw set deeper in the wheel compartment.

Keep this screw, and all other screws removed from bObi Pet for later reassembly.

Step 3: Remove the Dustbin Holders

Uninstall the screws on both sides of the dustbin. Then, remove the corner pieces that were held down by the screws.

Grip the Mainbrush compartment and pull down to reveal two screws on a red fastener. Remove them with the screwdriver.

Step 4: Remove the Cover Screws

Pull the brush compartment up until it is freed from bObi Pet. Then, detach the brush compartment’s circuit plug and set it aside for later reassembly.

Remove the 4 screws located beneath the brush compartment.

Next, remove the 2 screws on the dustbin’s red fastener.

Remove the fastener and set it aside for reassembly.

Step 5: Disconnect the Cover

Lift the cover to reveal the main board underneath. Remove the two circuit plugs connecting the lid to the mainboard.

Now you're ready to replace bObi Pet's bumper.

Step 6: Detach the Circuit Plugs

Flip bObi Pet’s cover over onto a flat surface so that you see 2 green circuit boards positioned at the top.

There are 8 circuit plugs that you will need to remove. Leave the smallest circuit plug at the top in place, and do not remove it.

If there is any glue holding down the other wires, you may scrape it off using a tool such as a screwdriver.

Step 7: Remove the Wires Hook(s)

Remove the hook holding the yellow circuit plug against the lid. Keep the small hook and all screws safely aside for later reassembly.

Depending on your model, bObi Pet may have one of two hooks holding the yellow wire. In this case, remove and keep both aside for reassembly.

Step 8: Remove the Screws

Next, remove the 4 screws connecting the bumper to bObi Pet’s lid.

You may nudge two of the oblong wall sensors out of their spot on bObi Pet to make room for your screwdriver. Be sure to replace them when done.

Step 9: Remove the Bumper

On the left and right sides of the bumper are bObi Pet’s sensor strips. They connect to the circuit board by red and white wires.

The sensor strips may be glued to the inside of the cover. Use a tool like a screwdriver to break off the glue.

Then, lift the whole bumper up and out.

Step 10: Align the New Bumper on BObi Pet

Now line up bObi Pet’s new bumper with the corresponding screw posts on her lid. (Highlighted Blue)

Make sure the sensor strips slide in behind the screw posts on both ends of the bumper.

Step 11: Reinstall the Screws

Once the bumper is positioned securely on the lid, reinstall the 4 screws around the inside of the bumper.

Once again, you may nudge 2 of the oblong wall sensors out to allow room for your screwdriver and then replace them when done.

Step 12: Attach the Yellow Wire

Next, you’ll need to replace the plastic hook removed previously. Place the yellow wire through it, and line the hook up with the screw post on the cover.

When aligned, install the screw on the hook.

Then, attach the thick yellow wire to the lower edge of the circuit board.

Continue reconnecting all circuit plugs.

In the middle of bObi Pet’s bumper is a circuit plug for one of the 5 wall sensors. Plug this one in at the topmost spot.

Step 13: Connect All Circuit Plugs

The rows on each side of the cover circuit board follow the same pattern for installation.

The left side of the circuit board has 3 spaces: The top space corresponds to the wall sensor with the shortest wire and no tab on the circuit plug.

Just below that is where the leftmost wall sensor plugs in. It has a longer wire and a small white tab on its circuit plug.

The space on the very bottom is for bObi Pet’s sensor strips. They have red and white wires.

Step 14: Double Check All Wires and Connections

Repeat the previous process for the circuit plugs on the right and double check that all connections are secure.

Make sure the the red and white wires are tucked behind the screw posts at the ends of the bumper.

Make sure all the wires are tucked behind the black hooks lining the inside of the bumper before closing bObi Pet. (Highlighted Yellow)

Step 15: Reconnect the Cover

Attach the two circuit plugs from bObi Pet's cover back onto her main board.

The yellow-wired plug connects to the right side of the mainboard. (Highlighted Yellow)

The white-wired plug on bObi Pet’s lid connects to the middle of the mainboard. (Highlighted White)

Step 16: Align the Cover's Edges

Lay down bObi Pet's cover and line up the edges precisely.

While holding bObi Pet's top and bottom together, carefully flip her over onto a flat surface.

Step 17: Replace the Front Wheel

Reinstall the front wheel’s screw.

Then, place the front wheel on top and firmly push down to secure it.

Step 18: Replace the Cover Screws

Replace the dustbin’s red fastener and install its two screws.

Install the four larger screws in the space beneath the brush compartment.

Step 19: Attach the Main Brushes

Plug in the brush compartment.

Then, replace its red brush fastener and install the two screws.

Step 20: Replace the Dustbin Holders

Position the brush compartment back in its original place on bObi Pet.

Now reinsert the corner pieces on both sides of the dustbin, with the arms of the brush attachment linked.

Ensure the rubber strip near bObi Pet's dustbin is not stuck underneath the brush compartment. Then, reinstall the two screws in each of the corner pieces.

Make sure the bin can slide in easily before your next use and you've completed bObi Pet's bumper replacement.

Congratulations and happy cleaning!