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Need a S1579-2 battery contactor for a 1975 Cessna 150M.

Thanks, Dalton

I’m very confused and don’t think I am the only one.
In a Recent post you said you replaced the battery contactor and when you checked for the master switch grounding the terminal it didn’t. You were then going to use a jumper to see if it activated the contact or not.
How did you come to the conclusion that you need another master contractor ?
Have you checked the battery neg terminal is properly attached to the firewall?

I am also confused. So I was going to take the lazy, easy way out. If I could get a contactor that I was sure was a good one, that would eliminate the problem with the present contactor.

Could I be assured that the various tests you suggested I perform would determine whether my contactor is good or bad?
I still have not heard any clicks or anything when I perform these tests.
So, I still do not know if my contactor is good or not.

I now plan to perform all the tests you recommended again in a very careful and methocal way.
Would that give me a defintive picture of the condition of my battery solenoid?

I will pull my request for a new solenoid.

There has been no sign of any life at all, no lights, no clicking, no spinning gyro, no nothing and the battery is fully charged

If the solenoid failed the click test, what does that tell you.

I would like to try and trace the small wire from the small terminal on the solenoid and see if, in fact is does go to the master switch and is properly hooked up.

There must be a point, in performing these tests, to determine with a certainty, whether the solenois is good or not



Dalton

Without knowing what you're doing, replace enough parts and maybe someday you'll replace the unknown bad part.

I know, false economy, throwing money at the problem.

Well, I am not going to continue doing that.

Actually, several months ago is when my plane, one day, would not start.
My A&P mechanic determined that the problem was the starter solenoid, which he replaced.
Strangely, after he replaced the starter solenoid, the plane would start.
But, after a period of time, once again, the plane would not start.
That is when my mechanic determined that the problem was with the battery solenoid.
He the gave me another battery solenoid, which I installed but the plane still would not start.
It was then then determined that the problem was the master switch.
I purchased a new master switch from Aircraft Spruce and installled it.
The plane still would not start.
My mechanic is 64 miles south of me at the Bandon Airport.
He comes to Florence about once a year to perform annuals on several other panes in Florence.
The last time he came to Florence is when he changed out the starter solenoid on my plane.
He has never done an annual on my plane.
He has a policy where the first annual he does on plane has to be done at his shop in Bandon
So, that is my history with this problem

I really think I can solve this problem with a little help from my friends on this site and I think we are very close to solving it.
I intend to keep trying very hard to solve this problem.

Dalton

I'll be blunt: you don't know what you're doing, you're not an A&P and is working/replacing critical parts without the supervision of an A&P, that's not exactly legal. Your plane has had that problem for several months, and with the way things are going (you keep replacing parts without knowing how to troubleshoot electrical problems, make a post every few days, etc.), I think you're nowhere close to solving the problem.

If I were in your situation, I'd contact one of the forum members who are A&P and ask if they would be willing to help over the phone (with pay, of course). Set up a time to call them when you're at the plane. An A&P can talk you through the steps to troubleshoot, take a look at pictures of what they want to see on your plane, tell you if the parts currently installed are correct and not broken, etc. THAT would have a better chance of solving your plane's problem soon.

The only parts that have been replaced are one starter solenoid, replaced by my A&P, one battery solenoid given to me and replaced by me under the advisement of my A&P and one master switch also under the advisement of my A&P.

Thanks for the encouragement



Dalton

Was the A&P near or at least within view to watch/check what you were doing?

Only for the starter solenoid