Are there limit switches on electric flap motor 1970 M20E?

[AndreiC]

Hello all,

I've been having my 1970 M20E for about a month now, and just slowly learning the ropes. A few days ago, after landing, my flaps (electric) would not retract. If I pushed the control switch to "down" I could hear the motor turning (but because the flaps were at the full-down position they would not move); if I pushed the switch to "up" nothing happened.

I removed the belly pan to look at the motor (everyone seemed to suggest that the source would be a dirty limit switch at least if this were a J), but in the compartment there were no switches to be found. The motor and gear assembly looked different from what is on the J. After a fair bit of extra jiggling the switch up and down, things suddenly started working on their own, so I closed the belly pan and went flying. Since then the flaps have been working fine.

Does anyone know how the system is supposed to work on the E? Is it a mechanical limit -- when the motor reaches a certain position the gear no longer engages and the motor spins freely? As I said, at both up and down ends if I keep the switch on the motor spins but the flaps don't move outside the range.

Thanks.

Andrei.

[BrianWilkins]

On my '69 E, whenever I press the flap switch up or down, the motor keeps going after it's reached the top or bottom.  So, I doubt there are limit switches, at least on mine.

[Hank]

1 hour ago, BrianWilkins said:

On my '69 E, whenever I press the flap switch up or down, the motor keeps going after it's reached the top or bottom.  So, I doubt there are limit switches, at least on mine.

That's how my 1970 C works, too. The motor runs loudly, but the flaps don't move, like there's a hard stop in there somewhere. Makes them easy to raise without looking, release the switch when they get noisy.