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I have a Dorman 747-300 Sliding Door Motor for a Dodge Grand Caravan.

The motor has a magnetic disc that will engage a brass "Clutch" with motor to open/close the door automatically. When the door is manually operated the clutch is to be disengaged from the motor and allow the door to move freely and not "fight" against the motors gears.

The problem is that the clutch is stuck to the motor gear and therefore makes it difficult to operate the door manually.

I have disassembled the part and cleaned the mating surfaces and relieving any suction/attraction that the parts have together. This allows for "free" manual operation, but it does not last long. After the door is used with the automatic button and the motor is used it gets "stuck again. Any way to remedy this sticking?

Inside Motor

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  • I do not have the ability to send a reverse polarity pulse to the motor. This is a motor for a Dodge Grand Caravan 2004 sliding side door.. – Jay Garbarino Dec 10 '20 at 16:48
  • Yeah I saw that. Has it always been this way? Or only when it got older? Maybe the spring has weakened. – DKNguyen Dec 10 '20 at 16:49
  • There is no spring in the system that I can see. Aside: Is there a way for me to add another image to the question? – Jay Garbarino Dec 10 '20 at 16:49
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    The spring might be inside the solenoid itself. Something has to counter the motion produced by the magnetic field when it is turned off. – DKNguyen Dec 10 '20 at 16:54
  • I will have to tack it apart and check for a spring action. The way it honestly looks is if to have the magnet push the brass clutch into the black plastic cog with the teeth that seat into the brass clutch the magnet would actually be "pushed" away from the solenoid. And possibly a solenoid magnetic attraction to pull it from the motor. Either the magnet is not being pulled away from the motor or the brass clutch is staying "stuck" to the black plastic motor cog through some kind of means. – Jay Garbarino Dec 10 '20 at 17:27

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