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LG WM3050CW Rotor Position Sensor Replacement

Introduction

Use this guide to replace the rotor position sensor in your LG WM3050CW Washing Machine.

The rotor position sensor is a Hall effect sensor that detects the primary motor's position, direction, and speed.

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  1. LG WM3050CW Rotor Position Sensor Replacement, Safety Precautions: étape 1, image 1 de 2 LG WM3050CW Rotor Position Sensor Replacement, Safety Precautions: étape 1, image 2 de 2

    • Before you begin your repair, perform the following:

    • Turn off the main water supply

    • Unplug your washer

    • Disconnect all water connections at the rear of your washer

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  2. LG WM3050CW Rotor Position Sensor Replacement, Unfasten the rear panel: étape 2, image 1 de 3 LG WM3050CW Rotor Position Sensor Replacement, Unfasten the rear panel: étape 2, image 2 de 3 LG WM3050CW Rotor Position Sensor Replacement, Unfasten the rear panel: étape 2, image 3 de 3

    • Use a Phillips driver to remove the four 10.7 mm‑long screws securing the rear panel.

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  3. LG WM3050CW Rotor Position Sensor Replacement, Remove the rear panel: étape 3, image 1 de 3 LG WM3050CW Rotor Position Sensor Replacement, Remove the rear panel: étape 3, image 2 de 3 LG WM3050CW Rotor Position Sensor Replacement, Remove the rear panel: étape 3, image 3 de 3

    • Lift the rear panel upward to release its bottom clips.

    • Pull the rear panel away from the chassis to release the remaining clips.

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  4. LG WM3050CW Rotor Position Sensor Replacement: étape 4, image 1 de 1

    • Remove the rear panel.

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  6. LG WM3050CW Rotor Position Sensor Replacement, Unfasten the rotor: étape 5, image 1 de 2 LG WM3050CW Rotor Position Sensor Replacement, Unfasten the rotor: étape 5, image 2 de 2

    • Use an impact driver to remove the 17 mm nut securing the rotor.

    • Alternatively, you can use a wrench and a hammer to loosen the nut.

    • To secure the rotor, you can insert a screwdriver, or a similar tool, between the rotor and the stator. Make sure to brace the tool against one of the screw bosses on the stator.

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  7. LG WM3050CW Rotor Position Sensor Replacement, Remove the rotor: étape 6, image 1 de 2 LG WM3050CW Rotor Position Sensor Replacement, Remove the rotor: étape 6, image 2 de 2

    • The rotor is magnetically attracted to the stator.

    • Pull the rotor straight off the stator and drive shaft splines to remove it.

    • Wiggle the rotor as you pull to help disconnect it.

    • This may require significant force.

    • During reassembly, watch your fingers when aligning the rotor over the stator, as the rotor gets sucked in easily.

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  8. LG WM3050CW Rotor Position Sensor Replacement, Unfasten the motor harness clamps: étape 7, image 1 de 1

    • Use a Phillips driver to remove the three 16.6 mm‑long screws securing the motor harness clamps.

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  9. LG WM3050CW Rotor Position Sensor Replacement, Unfasten the stator: étape 8, image 1 de 2 LG WM3050CW Rotor Position Sensor Replacement, Unfasten the stator: étape 8, image 2 de 2

    • Hold the stator up as you unfasten the last few bolts, as it can fall over unexpectedly.

    • Use a 10 mm socket wrench to remove the six 68 mm-long bolts securing the stator.

    • During reassembly, refasten the screws in a "star" pattern.

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  10. LG WM3050CW Rotor Position Sensor Replacement, Reposition the stator: étape 9, image 1 de 3 LG WM3050CW Rotor Position Sensor Replacement, Reposition the stator: étape 9, image 2 de 3 LG WM3050CW Rotor Position Sensor Replacement, Reposition the stator: étape 9, image 3 de 3

    • Don't pull the stator too far away from the device, as it's still connected by wires.

    • Pull the stator off of the drum and flip it so its rear is facing upward.

    • Note the position of the stator before continuing, as you will need it face the proper direction during reassembly.

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  11. LG WM3050CW Rotor Position Sensor Replacement, Disconnect the rotor position sensor: étape 10, image 1 de 2 LG WM3050CW Rotor Position Sensor Replacement, Disconnect the rotor position sensor: étape 10, image 2 de 2

    • Pull the rotor position sensor harness connector straight out of its socket to disconnect it.

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  12. LG WM3050CW Rotor Position Sensor Replacement, Remove the rotor position sensor: étape 11, image 1 de 3 LG WM3050CW Rotor Position Sensor Replacement, Remove the rotor position sensor: étape 11, image 2 de 3 LG WM3050CW Rotor Position Sensor Replacement, Remove the rotor position sensor: étape 11, image 3 de 3

    • Use your fingers to unclip the rotor position sensor from the stator.

    • Pull the sensor away from the stator to completely unclip it.

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Conclusion

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

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Ask our Answers community for help.

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