40c mystery thing

General help and support for your Lindeman through 2010 John Deere crawler
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AllenS
430 crawler
430 crawler
Posts: 64
Joined: Thu Jun 28, 2012 7:11 pm
Location: Star Prairie, WI 54026

40c mystery thing

Post by AllenS » Thu Apr 04, 2019 8:42 am

There is some kind of electrical device on my 40c. It is on the right side of the motor toward the front and mounted below the generator. There are two wires on it and one goes to the coil. What is the name of this thing and what does it do?

Jim B
350 crawler
350 crawler
Posts: 2080
Joined: Sun Nov 05, 2017 11:36 am
Location: western Maine

Re: 40c mystery thing

Post by Jim B » Thu Apr 04, 2019 8:50 am

Is it white porcelain? About 3" long, 1" wide, one bolt in a center clip to hold it? Has your 40C been converted to 12 volts? It sounds like a ballast resistor for using a 6 volt coil on 12 volts.

AllenS
430 crawler
430 crawler
Posts: 64
Joined: Thu Jun 28, 2012 7:11 pm
Location: Star Prairie, WI 54026

Re: 40c mystery thing

Post by AllenS » Thu Apr 04, 2019 9:23 am

It's still a 6 volt battery with positive ground.

Jim B
350 crawler
350 crawler
Posts: 2080
Joined: Sun Nov 05, 2017 11:36 am
Location: western Maine

Re: 40c mystery thing

Post by Jim B » Thu Apr 04, 2019 10:20 am

Does it look like this?

Image

Image

AllenS
430 crawler
430 crawler
Posts: 64
Joined: Thu Jun 28, 2012 7:11 pm
Location: Star Prairie, WI 54026

Re: 40c mystery thing

Post by AllenS » Thu Apr 04, 2019 11:09 am

How do I post a picture of it?

Jim B
350 crawler
350 crawler
Posts: 2080
Joined: Sun Nov 05, 2017 11:36 am
Location: western Maine

Re: 40c mystery thing

Post by Jim B » Thu Apr 04, 2019 11:25 am

Some people use Photobucket or other methods, but I don't know how those work. This site has a dedicated picture server now. You contact Lavoy (postmaster@jdcrawlers.com) to set up an account. You upload your photos to there then you can use the tools in the message box to insert them. That's a short version, look in the Message Board Q&A section for the whole rundown. I can send you a PM with an email you can send your photo to and I will post this one for you if you would like to try to get it identified. Let me know.

AllenS
430 crawler
430 crawler
Posts: 64
Joined: Thu Jun 28, 2012 7:11 pm
Location: Star Prairie, WI 54026

Re: 40c mystery thing

Post by AllenS » Thu Apr 04, 2019 3:29 pm

My email address is --

ash173@frontiernet.net

Thank you!

Jim B
350 crawler
350 crawler
Posts: 2080
Joined: Sun Nov 05, 2017 11:36 am
Location: western Maine

Re: 40c mystery thing

Post by Jim B » Thu Apr 04, 2019 4:23 pm

Email sent, let me know if you didn't get it.

Jim

Jim B
350 crawler
350 crawler
Posts: 2080
Joined: Sun Nov 05, 2017 11:36 am
Location: western Maine

Re: 40c mystery thing

Post by Jim B » Thu Apr 04, 2019 5:47 pm

Here is the photo AllenS sent me of the item he is trying to ID.

Image

AllenS,

It looks like it might be an oil pressure switch, possibly to shut your engine down if it looses oil pressure or to turn and hourmeter on or off. Is it screwed into a port in the block? Where the wire from it connects to the coil, is it on the terminal opposite the one the wire goes to the distributor from and is it the only wire on that terminal? Do you have to hold an over ride button to start your 40C? If you turn your ignition switch on is there power on one terminal of this unit and not the other? Then when the engine is running does it have power on both terminals?

Jim

fundytides
440 crawler
440 crawler
Posts: 223
Joined: Sun Oct 27, 2013 8:41 am
Location: Saint John, NB, Canada

Re: 40c mystery thing

Post by fundytides » Thu Apr 04, 2019 6:08 pm

sending unit for hour meter.
have 40c 4 roller crawler, 1927 Ford T Touring car, 1931 Ford A Roadster, 1951 Standard Vanguard Saloon. Never a dull moment!

AllenS
430 crawler
430 crawler
Posts: 64
Joined: Thu Jun 28, 2012 7:11 pm
Location: Star Prairie, WI 54026

Re: 40c mystery thing

Post by AllenS » Fri Apr 05, 2019 4:42 am

Thank you, Jim and fundytides.

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