cowl flap motor

[cmsheaff]

My front cowl flap is stuck open. When I took a look, the top limit microswitch had a wire broken, and the bottom limit microswitch doesn't seem to work. I thought that would be an easy replacement. I have ordered the maintenance manuals but they haven't come yet. Can anybody give me the part number I need? Even better can anybody tell me the specs on the microswitch so that I don't need to order a Cessna certified part?

[Pete Somers]

The p/n for the switch is S2224-1 and you will need the actuator S2225-1. You can get this microswitches just about anywhere there is nothing special about them. They are not expensive from Cessna.
However to set them up you will need a manual or mark the position of the switch you remove.

Regards
Pete

[cmsheaff]

What is the actuator? It looks like the cowl flap motor has a plate on the end of the shaft which, when it rotates, depresses a microswitch by depressing its roller lever arm.

[skymstr02]

The actuator is that roller arm that actually pushes in the little button on the microswitch. It is a seperate item, and is not included with the switch itself. It is mounted with the same two little screws that hold on the microswitch.

[cmsheaff]

Thank you. Since the "actuator" is actually part of the switch I am sure needs replacement (it is epoxied into it), I better order both. In fact I think I'll just replace both of the switches while I'm there. The other switch is as you describe, with a separate roller lever arm.

[Pete Somers]

No the actuator is a separate part.
Alway handy to have a spare of those switches as the throttle microswitches are the same part number.

Pete