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iRobot Roomba 551 Bumper Sensor Replacement

What you need

  1. iRobot Roomba 551 Bumper Sensor Replacement, Side Brush: step 1, image 1 of 1
    • Place your Roomba upside-down on a hard surface.

  2. iRobot Roomba 551 Bumper Sensor Replacement: step 2, image 1 of 1
    • While holding the side brush in place, use a Phillips #1 screwdriver to remove the 4.5mm screw from the center of the brush.

  3. iRobot Roomba 551 Bumper Sensor Replacement: step 3, image 1 of 1
    • Gently pull upwards on the brush to remove it.

  4. iRobot Roomba 551 Bumper Sensor Replacement, Bottom Plate: step 4, image 1 of 1
    • Rotate the Roomba upside-down so the bottom is facing towards you.

  5. iRobot Roomba 551 Bumper Sensor Replacement: step 5, image 1 of 2 iRobot Roomba 551 Bumper Sensor Replacement: step 5, image 2 of 2
    • Using a Phillips #2 screwdriver, remove the captive screws that hold the bottom plate in place.

  6. iRobot Roomba 551 Bumper Sensor Replacement: step 6, image 1 of 1
    • Carefully lift the bottom plate.

    • The battery is only secured in place by the bottom plate, and may fall out once the bottom plate is removed.

  7. iRobot Roomba 551 Bumper Sensor Replacement, Bumper: step 7, image 1 of 3 iRobot Roomba 551 Bumper Sensor Replacement, Bumper: step 7, image 2 of 3 iRobot Roomba 551 Bumper Sensor Replacement, Bumper: step 7, image 3 of 3
    • With a Phillips #1 screwdriver, remove the ten 12mm screws located along the bottom of the bumper.

  8. iRobot Roomba 551 Bumper Sensor Replacement: step 8, image 1 of 1
    • Lift the bottom cover and set it to the side.

  9. iRobot Roomba 551 Bumper Sensor Replacement: step 9, image 1 of 2 iRobot Roomba 551 Bumper Sensor Replacement: step 9, image 2 of 2
    • Flip the Roomba over, grasp the bumper, and gently lift to remove.

    • The battery is not secured in place once the bottom plate has been removed, and may fall out when the Roomba is turned right-side up.

  10. iRobot Roomba 551 Bumper Sensor Replacement, Bumper Sensor: step 10, image 1 of 1
    • Flip the Roomba so that the bottom is facing you.

  11. iRobot Roomba 551 Bumper Sensor Replacement: step 11, image 1 of 2 iRobot Roomba 551 Bumper Sensor Replacement: step 11, image 2 of 2
    • Remove the two 5mm screws located near the center of the bumper using a Phillips #1 screwdriver.

  12. iRobot Roomba 551 Bumper Sensor Replacement: step 12, image 1 of 1
    • Pull gently on the bottom of the sensor to remove.

  13. iRobot Roomba 551 Bumper Sensor Replacement: step 13, image 1 of 3 iRobot Roomba 551 Bumper Sensor Replacement: step 13, image 2 of 3 iRobot Roomba 551 Bumper Sensor Replacement: step 13, image 3 of 3
    • Flip the bumper over and lift the sensor from its compartment.

    • You are now free to replace the bumper sensor.

Conclusion

To reassemble your device, follow these instructions in reverse order.

4 other people completed this guide.

Cody Rhoads

Member since: 01/16/14

348 Reputation

2 Guides authored

Team

Cal Poly, Team 13-14, Regan Winter 2014 Member of Cal Poly, Team 13-14, Regan Winter 2014

CPSU-REGAN-W14S13G14

4 Members

19 Guides authored

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