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iRobot Roomba 870 Bumper Sensor Replacement

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Is your Roomba not able to sense surrounding obstacles, preventing it from avoiding such barriers? If so, here is the guide to fix the problem with a simple change of the bumper sensor. All you need are the standard #0 and #1 Phillips Screwdriver heads in order to remove the two types of screws involved with this replacement.

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  1. iRobot Roomba 870 Bumper Sensor Replacement, Bumper Sensor: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 iRobot Roomba 870 Bumper Sensor Replacement, Bumper Sensor: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Flip the iRoomba over so that the underside is facing up.

    • Using the Phillips #0 screwdriver, remove the 4.0 mm screw in the center of the yellow side brush.

    • Remove the yellow side brush.

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  2. iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:02crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:02crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove the two 3.5 mm Phillips screws that hold the battery cover onto the Roomba with a Phillips #0 screwdriver.

    • Remove the battery cover.

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  3. iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:03crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:03crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove the two remaining 3.5 mm Phillips #0 screws that attach the base-plate to the bottom of the Roomba.

    • Remove the entire base-plate from the bottom of the Roomba.

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  5. iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove the ten 3 mm screws that attach the bumper guard to the bumper with a Phillips #1 screwdriver.

    • Remove the bumper guard.

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  6. iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:05crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:05crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Be careful when removing the bumper from the Roomba to prevent damage to the sensor wires. Remove slowly!

    • Lift up the Roomba so that its bumper is not resting on anything, and slowly separate the bumper from the device.

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  7. iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:06crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:06crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:06crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove the two 3 mm screws that attach the sensor connector to the bumper/sensor with a #1 Phillips Screwdriver.

    • Carefully detach the sensor connector from the bumper and the sensor.

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  8. iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 iRobot Roomba 870 Bumper Sensor Replacement: crwdns2935265:07crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • The sensor is now loose on the bumper. Be careful not to rapidly move the bumper for fear of dislodging the sensor and breaking it.

    • Flip the bumper over, ensuring the sensor remains inside the sensor compartment.

    • Gently remove the bumper from the black infrared sensor.

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

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Jacob Lindberg

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449 crwdns2915208:0crwdne2915208:0

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Cal Poly, Team S14-G3, Banghart Spring 2017 crwdns2935289:0Cal Poly, Team S14-G3, Banghart Spring 2017crwdne2935289:0

CPSU-BANGHART-S17S14G3

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Can not get to the plug-in area on the board to replace sensor this way. DOES NOT work this way.

jkeysgate - crwdns2934203:0crwdne2934203:0

man kommt nicht an den Stecker. Die Anleitung bringt überhaupt nichts.

Reinhard Totzauer - crwdns2934203:0crwdne2934203:0

Incomplete. This NEEDs to explain how to access the plug on the board.

Ed T. - crwdns2934203:0crwdne2934203:0

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