Working on a Farmall 340

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2cubs
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Re: Working on a Farmall 340

Postby 2cubs » Sun Dec 16, 2018 1:28 am

Jim Becker wrote:That looks like a Murphy gauge, a temperature gauge with an electrical contact that closes when the temperature goes past a set limit. The box is probably a relay that connects the gauge to the ignition system to cut off the engine if it overheats. You don't usually see them on a tractor. They are usually on power units that operate unattended.


It is connected to a temp gauge. :thanx: for the info Jim Becker, I learned something new.

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Re: Working on a Farmall 340

Postby 2cubs » Tue Dec 25, 2018 5:48 pm

Pulled the alternator off and did a quick "bench" test. I was able to jury rig the sickle sharpener to spin it. It has good output so I can use it. Video coming soon.

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Re: Working on a Farmall 340

Postby 2cubs » Tue Dec 25, 2018 7:22 pm

The video: I hooked up a battery and a wire to the field terminal to touch to the + battery terminal.


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Re: Working on a Farmall 340

Postby Gary Dotson » Wed Dec 26, 2018 8:14 am

FYI, that alternator requires an external regulator, perhaps you knew this but just in case.

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2cubs
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Re: Working on a Farmall 340

Postby 2cubs » Wed Dec 26, 2018 12:58 pm

Gary Dotson wrote:FYI, that alternator requires an external regulator, perhaps you knew this but just in case.


I checked that out just to make sure. It is the early Delco that requires a VR. I have the same setup on one of our JD tractors.

Here is info on GM alternators: http://www.rowand.net/Shop/Tech/GmAlter ... cation.htm

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2cubs
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Re: Working on a Farmall 340

Postby 2cubs » Mon Jan 07, 2019 9:01 pm

I made it out to the shop for a bit today. I found some material to make a bushing for the pivot bolt on the alternator bracket. It had a 1/2" pipe welded on and a 3/8" bolt thru it which allowed way to much slop. Now I need to address the tensioner bracket to get it lined up. I had to remove the fan and pulley to access the bolt that holds it in place. The bolt goes into the water jacket so I need to drain the coolant before pulling it out. Looks like I may need to get a longer belt also.

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2cubs
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Re: Working on a Farmall 340

Postby 2cubs » Tue Jan 22, 2019 8:51 pm

A couple weeks back I tried to remove the bolts holding the fuel tank. They were really rusty and felt like they were going to break. I've been soaking them in ATF/Acetone every few days and today I tried them again. They all came out with a little working back and forth with out breaking any of them. Now I have good access to the gauges for wiring and can also clean out the fuel tank.

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