Anyone have the part number for gear down actuator switch - 1976 F

[Oldguy]

Friend just had his F worked on, and it came back from the avionics shop without the ability to drop the electric gear. Emergency extension worked as it was supposed to work, and now it appears the switch to drop the gear is dying (works intermittently). Does anyone have the part number for the switch? The parts manual I have for the F model looks like a copy of a copy of a copy, and some of the characters cannot be read. Any help would be much appreciated.

John

[Vance Harral]

Screen captures of relevant details for M20F s/n 22-1306 and on are pasted below, from a high-res schematic Mooney sent us a long time ago, and the service manual.  Part numbers are OEM original from the 1970s.  My guess is that some/all of them have been superseded, but you can look up equivalents online.

Not sure what you mean by the "switch to drop the gear", as there are a number of switches in the system: the pilot control switch in the cockpit that selects gear up/down, the relays that power the landing gear actuator motor, and the limit switches that cut power to the motor when the gear reaches its final up/down position.

 

 

 

[Oldguy]

1 hour ago, Vance Harral said:

Screen captures of relevant details for M20F s/n 22-1306 and on are pasted below, from a high-res schematic Mooney sent us a long time ago, and the service manual.  Part numbers are OEM original from the 1970s.  My guess is that some/all of them have been superseded, but you can look up equivalents online.

Not sure what you mean by the "switch to drop the gear", as there are a number of switches in the system: the pilot control switch in the cockpit that selects gear up/down, the relays that power the landing gear actuator motor, and the limit switches that cut power to the motor when the gear reaches its final up/down position.

 

Thank you! Exactly what I was looking to find!

I am working off of a phone call from the owner who got a phone call from the avionics guy who spoke with the A/P, so the fact you were able to decipher the request is very much appreciated. Since it is a late year F, they are probably looking for the RBM 70-311221 which probably needs the -5 suffix for 6 lugs.

Thanks again.

John

[M20E for me]

If it is the same as the E it is a milspec switch you can buy from DigiKey for under $70.00.  You unscrew the tip and screw on the plastic wheel.  If you need the MS part number I can look it for you.

[Oldguy]

10 hours ago, M20E for me said:

If it is the same as the E it is a milspec switch you can buy from DigiKey for under $70.00.  You unscrew the tip and screw on the plastic wheel.  If you need the MS part number I can look it for you.

Please.