Flaps on a 75F. - Electric

[Yetti]

So the flaps on Al were not working.   Short answer is a ground got left off up front by the nose well flap switch.

Long story.

For this annual the electric flaps got inspected and cleaned up and washed out.   I got a better understanding how the flaps work.   The basics are power is fed to the Flap bay (3rd big panel back) and the ground is fed from the flap switch.

There are two relays one up and one down.   Limit switches are for up/down/middle.

It is easy to go through the flap system with a test probe and see what is going on.

The two relay coil has power all the time.  The ground is applied from the switch up front to energize the coil.

The relays are two sided so for fun I move the wires to the other side for the next 40 years.

I did find and order a new relay.  They are Magnacraft Relay that was purchase by Schneider Electric (funny enough I work for a company that is kind of mostly associated with Schneider Electric.

Probably the quickest check is to pull the ground off the relay coil and ground it to see if the motor spins.   Disconnect the working end first.

Lube it all up and put it back together.

 

Mooney F 70s schmatics.pdf

[Yetti]

[Marauder]

So the flaps on Al were not working.   Short answer is a ground got left off up front by the nose well flap switch.
Long story.
For this annual the electric flaps got inspected and cleaned up and washed out.   I got a better understanding how the flaps work.   The basics are power is fed to the Flap bay (3rd big panel back) and the ground is fed from the flap switch.
There are two relays one up and one down.   Limit switches are for up/down/middle.
It is easy to go through the flap system with a test probe and see what is going on.
The two relay coil has power all the time.  The ground is applied from the switch up front to energize the coil.
The relays are two sided so for fun I move the wires to the other side for the next 40 years.
I did find and order a new relay.  They are Magnacraft Relay that was purchase by Schneider Electric (funny enough I work for a company that is kind of mostly associated with Schneider Electric.
Probably the quickest check is to pull the ground off the relay coil and ground it to see if the motor spins.   Disconnect the working end first.
Lube it all up and put it back together.
 
Mooney F 70s schmatics.pdf

Do you have a part number and price for that relay? And who did you order from?


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[Yetti]

https://www.relayspec.com/

Part number

Price $113.45

W97CSX-1

W97CSX-1

I would be happy to send you the last one they had, but UPS has said they delivered it, but I can't find it so now we start the search process.

 

As long as the coil is not bad, you can switch the wires to the other side if say you had burned contacts.     The unused pins are a mirror opposite

Edited December 18, 2021 by Yetti

[Yetti]

Update:  The relay has been found.

[Marauder]

https://www.relayspec.com/
Part number
Price $113.45

W97CSX-1

W97CSX-1

I would be happy to send you the last one they had, but UPS has said they delivered it, but I can't find it so now we start the search process.
 
As long as the coil is not bad, you can switch the wires to the other side if say you had burned contacts.     The unused pins are a mirror opposite

Thanks!


Sent from my iPad using Tapatalk Pro