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I have a LEGO 7865 Red 12 volt train motor from a LEGO 7730 train set. The motor has stopped working as it has been dropped on one of the wheels.

How can I open the motor case to effect a repair?

2
  • 1
    Do you want to open the train unit or the motor itself?
    – Mast
    Dec 21, 2017 at 2:14
  • I need to open the red case of the motor itself. I think that one of the gears has been forced out of engagement, maybe the shaft is bent,
    – RAP 77
    Dec 21, 2017 at 10:28

2 Answers 2

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According to Bricklink, Set # 7730 has this motor :

bb12va Electric, Train Motor 12V Modern Type I with 2 round contact holes

For disassembly and repair you can look at this large post with pictures on Eurobricks by Andromeda

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Unfortunately, repairing it will not work, if the shaft is bent, as the wheel would just fall off again.

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  • 1
    Replacing shafts is something routinely done on non - LEGO mechanisms. Why wouldn't it work here, if it's bent?
    – Mołot
    Apr 4, 2018 at 8:55

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