05-27-2013, 01:19 AM | #1 |
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31' Key switch
Anybody have info on how to fix this switch? This one I have seems as though there is is no pressure on the contacts so it does work if I take it out and turn it upside down. The back is swedged. I thought maybe pry out the steel back and fix the inside and then hold the back in with liquid steel or something.???
What do you think? |
05-27-2013, 01:37 AM | #2 |
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Re: 31' Key switch
Don't patch it, it'll come back to haunt you. Tam's Model A Parts has a REALLY good heavy duty one. Bill W.
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05-27-2013, 05:14 AM | #3 |
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Re: 31' Key switch
Replace the switch? BOLDERDASH.
Fixing a later 30-31 Electrolock switch is EASY. Don't be in a hurry to get rid of an original part! I borrowed (blatantly ripped off) one of Tom W 's pix to help illustrate. My page below also shows how the switch grounds out (electrically locks) the ignition. You DO NOT have to remove the back unless you wish to resolder or replace the wire in the armored cable. Remove the cylinder by backing out the two retaining screws, visible in Tom's photo. Now is a good time to give the cylinder a solvent wash and lube it with graphite oil. Look at the left illustration. There are two springs. The larger one sits on a locating pin and pushes the cylinder forward. The smaller one sits under the dimple visible in the center of the bronze contact. (Look at Tom's photo) Both need a little stretch after 80 years of compression. Clean the contact surfaces. Make sure the smaller spring forcefully closes the contacts. Re-assemble and test. WOW! That was hard. Godspeed under 40. |
05-27-2013, 08:04 AM | #4 |
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Re: 31' Key switch
Replace the switch? BOLDERDASH.
Fixing a later 30-31 Electrolock switch is EASY. Don't be in a hurry to get rid of an original part! Excellent advice! Even I, of the "electrically-challenged" group has been able to follow these diagrams to repair original pop-outs. I'm guessing it will be another 80 years before they need repair again.
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05-27-2013, 09:28 AM | #5 |
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Re: 31' Key switch
True. The "spring loaded pin" is located at the bottom "out-dent" in the photo.
I use a small scratch awl through the hole to depress and out it comes. |
05-27-2013, 05:03 PM | #6 |
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Re: 31' Key switch
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You guys are still saying I don't have to remove the back to fix it ? Trying to figure out how to get at that pin through the key hole...... |
05-27-2013, 05:29 PM | #7 |
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Re: 31' Key switch
If you continue to have no luck getting the tumbler out, send it to John Holland, he does excellent work on these pop-out switches. 330-483-3895. He is in Ohio.
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05-27-2013, 06:56 PM | #8 | |
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Re: 31' Key switch
Quote:
Chief always said, "EVERYTHING" has it's PRICE!! I've seen several Model A's go down to DEFEAT in really fun parades with pop-outs that didn't POP right!! Bill W.
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05-27-2013, 08:21 PM | #9 |
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Re: 31' Key switch
Taking the 1931 popout apart isn't too bad a job. I used a small sharp chisel to bend back the potmetal over the cover. You can leave one side as is and lift the cover off. I then replaced the bad wire and recrimped the potmetal. I removed the key part without drilling any holes, but don't recall what I did. To remove the plunger end I had to use a Dremel and small pointed diamond bit to grind away the 4 tabs. I them bent 4 new tabs to hold the end in place.
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05-27-2013, 09:22 PM | #10 |
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Re: 31' Key switch
Yep these pictures all show taking the back off. Thats what I am going to do at work tomorrow....
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05-28-2013, 08:39 AM | #11 |
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Re: 31' Key switch
Okay that was easy. Took about 40 minutes. Took the back off like I thought. [ Did not have to take the tumbler out ] took out the 1 screw for the power wire, twisted the contact and pulled it out. Bent the inside contacts [ they don't look like this picture ] and put it back together.
Lot's of pressure on the contacts now and ohms out good. Back in the car this afternoon. Jerry |
05-28-2013, 03:53 PM | #12 |
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Re: 31' Key switch
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05-28-2013, 04:13 PM | #13 |
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Re: 31' Key switch
I want to see how it works, I may come over one evening this week.
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05-28-2013, 04:21 PM | #14 |
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Re: 31' Key switch
Okay Rock anytime after about 5 would be safe.
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05-29-2013, 11:41 AM | #15 |
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Re: 31' Key switch
Okay It's haunting me like Bill W. said it would. I put it in last night in the rain and it wouldn't work. Seems to have a short now where the power screw goes though the case.
I will give it another thy and maybe make a new insulator for it tonight.. that should work. |
05-29-2013, 11:45 AM | #16 | |
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Re: 31' Key switch
Quote:
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05-29-2013, 02:07 PM | #17 |
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Re: 31' Key switch
Look carefully at my first picture. With the key cylinder removed it's the same as the popout being on and the center contact is making contact with the contact leading to the wire in the armored cable. The long wire is often missing it's insulation and shorts to ground is it's the original wire. In the first picture, the 2 outer contacts on the springy contact are the ground contacts, and they ground the points when the switch is pushed in.
The wire shown in the second picture is the new wire I soldered in place to replace the original wire. Last edited by Tom Wesenberg; 05-29-2013 at 03:01 PM. |
05-29-2013, 02:38 PM | #18 |
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Re: 31' Key switch
Okay, Take 2 . Took it apart at lunch and fiddling around to see if it was grounding out to the case.... It was but inside the shield.. Unsoldered the old wire and pulled it out to find it was shorting about where it comes through the firewall.
New wire and wallah it works fine now. This just tells me don't use One inch of the old wires in this car. |
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