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David Maddux 
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 Topic: Need Help! D-17 Diesel
Posted: 28 Dec 2011 at 9:20am |
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I am working on my engine preheater now and I need to know what you guys are using for the terminal insulating bushing? I think I can still use the old insulating washers that came on it, but the bushing went all to pieces when I took it out. I was hoping that some of you guys had a fix for this. Of course AGCO no longer has the part. If no one else has a fix for this, I was thinking I could have my machinist make one out of a bakelite material possibly? Dave.
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Chad(WI)
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Posted: 28 Dec 2011 at 10:02am |
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Dave... been a while, but when I rebuilt the heater on my 45 diesel, I used nlyon bushings I found at the hardware store. Just a thought.
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Farrell(Utah)
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Posted: 28 Dec 2011 at 11:19am |
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Dave, I used a ceramic washer from a starter motor. A NAPA store had the washer in stock. Fortunately, I found one that was close to the right size and did a little grinding on it to make it fit. So far, it has worked well.
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A(1937), 2 G, 2 WD45 diesels, 6 WD45 gas, UC, 2 WD, D17 gas, WF, Farmall 400, D12, Kubota B3030
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SteveM C/IL
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Posted: 28 Dec 2011 at 1:38pm |
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I wouldn't think nylon could take the heat.
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Chad(WI)
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Posted: 28 Dec 2011 at 3:02pm |
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I'm assuming that Dave is talking about the electrical terminals that run through the manifold?
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Farrell(Utah)
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Posted: 28 Dec 2011 at 4:59pm |
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In my post, I was referring to the electrical insulator that is necessary for the heating element in the manifold heater.
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A(1937), 2 G, 2 WD45 diesels, 6 WD45 gas, UC, 2 WD, D17 gas, WF, Farmall 400, D12, Kubota B3030
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David Maddux
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Posted: 28 Dec 2011 at 5:10pm |
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Yes, there is a brass bolt that is the element post. It needs an insulating bushing between the bolt and the manifold to keep from grounding out against the manifold casing.
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Farrell(Utah)
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Posted: 28 Dec 2011 at 6:57pm |
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Dave, you said it better than I did. The ceramic washer that I used just fit in the space in the manifold after a little grinding and was about the same thickness as the original bushing. As I recall my original bushing was made of several ceramice-like washers bonded loosely together.
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A(1937), 2 G, 2 WD45 diesels, 6 WD45 gas, UC, 2 WD, D17 gas, WF, Farmall 400, D12, Kubota B3030
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David Maddux
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Posted: 28 Dec 2011 at 8:53pm |
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Farrell: There is ceramic washers and then there is also the bushing that fits around the brass connector bolt, or in other words without the bushing the bolt would fit loose in the block.
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Gatz in NE
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Posted: 28 Dec 2011 at 10:31pm |
Dave, is this the kind you're talking about?
The insulator looks similar to a spark plug's
I don't know as nylon would stand the heat either.
Just a thought, some plaster-of-paris might work, as it can get inside the threaded part without having to disassemble the element. That stuff hardens up very good. Maybe coat it with some clear lacquer.
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SteveM C/IL
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Posted: 28 Dec 2011 at 11:00pm |
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Just guessing but its probably an element more like the 45D,not like the later stuff in Gatz' picture.
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Teddy (punchie)
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Posted: 29 Dec 2011 at 5:27am |
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Any glass or porcelain would work. Old spark plugs. Neck out or an old little bottle.
Just a note: Had a friend cut a mirror for a car one time, He use a glass cutter, grinder and a belt sander to cut it and make it fit. He work in the glass business for 20 some years. I told him I had no idea that you sanded and grind on glass to make it fit.
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Ac D-19, a Number of WD's, One WD45, Two 444 balers, Ac plows and etc.
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David Maddux
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Posted: 29 Dec 2011 at 6:54am |
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Gatz: What you are showing is the newer type I am working with what SteveM is describing.
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Farrell(Utah)
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Posted: 29 Dec 2011 at 7:38am |
Dave, The ceramic piece that I used was an electrical insulator taken from an auto starter to insulate the current. Luckily, it was held to the starter with a bolt of the same diameter as the brass connecting bolt that you referred to in you post so it slipped right over the brass bolt. The outside diameter of the ceramic piece was also just a bit big to fit in the bushing hole but with a little trimming with the grinder it was nearly a perfect fit. It seemed like the thickness was about about the same as the depth of the bushing hole so when I was done it held the brass connecting bolt snuggly in place with no room for slippage in any direction. As I recall someone on this Forum had a NOS piece for sale when I was repairing mine. Right now I'm in Washington D.C. or I would check my supplies as I think that I kept an extra for use on another tractor. My repair has worked for several years now on a WD45 diesel. (Oh, a picture is worth a thousand words.)
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A(1937), 2 G, 2 WD45 diesels, 6 WD45 gas, UC, 2 WD, D17 gas, WF, Farmall 400, D12, Kubota B3030
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Chad(WI)
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Posted: 29 Dec 2011 at 7:55am |
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The nylon has been in my 45D for 10 years with no problems. The intake does not get that hot.....lots of air moving through there to cool it. Insulates the terminals and easy to work with, too.
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Farrell(Utah)
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Posted: 29 Dec 2011 at 8:10am |
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At the risk of being boring, I have one more comment. I used the word ceramic but maybe the piece was porcelain. All I know is that it is solid, hard and white. I agree with Chad that his method will also work well.
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A(1937), 2 G, 2 WD45 diesels, 6 WD45 gas, UC, 2 WD, D17 gas, WF, Farmall 400, D12, Kubota B3030
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