Chapter 10: How to Replace Roomba Discovery Caster Wheel Drop Switch

Chapters Menu

Chapter 1: What Is Roomba Discovery Series Saying To Me? Chapter 2: How to Open/Replace Frame Roomba Discovery Chapter 3: How to Replace Roomba Discover Series Main Brush Casing Chapter 4: How to Replace Roomba Discovery Main Brush Motor Chapter 5: How to Replace Roomba Discovery Motherboard Chapter 6: How to Replace Roomba Discovery Speaker Chapter 7: How to Replace Roomba Discovery Side Brush Motor Chapter 8: How to Replace Roomba Discovery Side Brush Gear Assembly Chapter 9: How to Replace Roomba Discovery Front Caster Wheel Chapter 10: How to Replace Roomba Discovery Caster Wheel Drop Switch Chapter 11: How to Replace Roomba Discovery Drive Wheel Chapter 12: How to Replace Roomba Discovery Cliff Sensors Chapter 13: Roomba Discovery Motherboard Connections   This guide explains how to replace the front caster wheel drop switch on a non-swivel Roomba Discovery 4XXX/4XX series, pictured below: Roomba Discovery 4XXX & 4XX Servicing and Repair Guide 10.1          Caster Wheel Drop Switch Replacement Roomba replacement caster wheel drop switch can be found at RobotShop. Removal Phase 1 - Unscrew screws (A).

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

2 - Remove any glue holding the wires for the caster wheel switch.

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

3 - Remove the front support.

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

4 - Remove the springs for the bumper (if needed).

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

5 - With a pair of pliers, remove the caster wheel drop switch off its socket.

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

6 - Cut the defective switch off.

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

7 - Strip the end of the wires for the caster wheel drop switch coming from the robot.

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

8 - Cut the wires of the replacement switch.

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

9 - Strip the wires of the replacement switch.

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

Assembly Phase 1 - Twist the sripped wires of the replacement switch together with the stripped wires coming from the robot.

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

2 - Solder the wires together.

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

3 - Place electrical tape around the soldered part of the wires.

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

4 - With a pair of pliers place the wheel drop switch correctly in its place.

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

5 - Wheel drop switch should look like this when installed in its socket:

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

6 - Reinsert the springs if you had removed them.

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

7 - Place the front support correctly and put back in screws (A).

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

8 - Place the purple wire for the caster wheel correctly on the front support.

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

9 - Place glue to hold the purple wire in place, and you’re done.

Roomba Discovery 4XXX & 4XX Servicing and Repair Guide

For details on how to reassemble the Roomba’s frame, please see the Roomba Discovery 4XXX & 4XX Servicing and Repair Guide, Ch. 2: How to Open Roomba / Replace Frame.

For addition help contact the RobotShop Technical Team via our Online Support Center. Roomba replacement parts can be found at RobotShop.
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