1983 M20J with KAP150 - electric trim switch part#?

[Adi]

Hey folks,

I'm trying to find out the part number of the electric trim switch in my 1983 M20J. 

Sorry for the potato quality photo (it's a still from a video), but it's the rightmost switch in the attached photo. 

I am not sure if the switch is stock or it's part of the autopilot system - any information appreciated.

Higher level, lately my electric trim has been acting up, it would intermittently stop working but start working again after resetting this switch. An autopilot shop has suggested the switch itself as a likely culprit.

[LANCECASPER]

55 minutes ago, Adi said:

Hey folks,

I'm trying to find out the part number of the electric trim switch in my 1983 M20J. 

Sorry for the potato quality photo (it's a still from a video), but it's the rightmost switch in the attached photo. 

I am not sure if the switch is stock or it's part of the autopilot system - any information appreciated.

Higher level, lately my electric trim has been acting up, it would intermittently stop working but start working again after resetting this switch. An autopilot shop has suggested the switch itself as a likely culprit.

If it's the switch on the instrument panel - that's just a stock switch/circuit breaker. If it's the trim switch on the yoke that's a different story - it's a Bendix King part.

[KSMooniac]

I've got a couple of yoke switches as well if anyone needs one.

Sent from my LM-V405 using Tapatalk

[201Mooniac]

I have the Klixon panel breaker switch coming available soon if anyone needs one.

[mooneyflyfast]

I believe it may be possible to replace the microswitch in the yoke switch if that’s what the problem is. There was an ancient thread about this and I bought one but my problem turned out to be the raised area on the thumbpiece not making proper contact with the microswitch.

[Adi]

I'm not entirely sure how to debug this problem without replacing the switches in turn.

Since the electric trim recovers just by cycling the CB switch, I thought it's more likely that the problem is in that switch.

If you folks have any suggestions for pinpointing the problem, let me know.

[LANCECASPER]

47 minutes ago, mooneyflyfast said:

I believe it may be possible to replace the microswitch in the yoke switch if that’s what the problem is. There was an ancient thread about this and I bought one but my problem turned out to be the raised area on the thumbpiece not making proper contact with the microswitch.

Buy the trim switch from @mike261

[philip_g]

7 hours ago, LANCECASPER said:

Buy the trim switch from @mike261

That's a beautiful switch. We have a century and I'm tempted to buy it to see if we can make it work

[Matt M]

On 2/1/2022 at 5:48 PM, mike261 said:

got these.

Mike,

I’m interested in the yoke trim switch. Can you contact me?

Matt

[Will.iam]

Rats late to topic but if matt doesn’t take the trim switch i will my return springs are bad and need a new switch or overhaul the one i have.