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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Re: Concern with my TD 6 1947-9...white smoke.....and

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02-17-2014 17:20:31

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Went out on the north forty, to the dozer, and rearranged the spark plug wires and repositioned the gear at the mag. Started the start button, and the engine fired and operated good -real good. I drained the injection pump; a brown/yellow fluid came out. Kinda like diesel and a light oil perhaps. Taking off the cap and removing the level plug on the end, I filled the pump with oil until the oil began to come out the level opening. Replacing the level plug, screwing on the cap,I removed the valve cover. Brought the rear piston to the top and examined the clearances on the intake and the exhaust valves. Everything is okay. Replacing the valve cover, I started the engine on gas, and then went to diesel. Engine operated good, sounded good. There was still white smoke. I loosened the number 4 cylinder injector. There was no sudden drop in r.p.m. and the white smoke pretty much disappeared. Connecting the injector, the white smoke emitted as before mentioned. I had also put some transmission fluid in the diesel fuel tank. With the engine operating, I turned out the -T- valve at the injector pump -located at the lower front, to bleed off the pump. Much to my surprise; the oil that I had put in before was coming out the -T- valve. When I had turned out the -T- valve a few weeks past, diesel fuel had come out there for thinking I was bleeding the pump from any possible air. Are you guys sure that part with the cap at the rear of the pump is to be filled with oil???? I will make an injector test later.

One other thing I observed; above the starter on the right side -as you are looking at the dozer from the front, there was oil coming out. At the bottom of engine, same side, oil was streaming to the ground. Guess; real oil seal. What does anyone think?? When I first got this dozer; checking the oil stick, the oil on the stick was twice the distance of the full mark, and the oil was very, very, thin.

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Ian Beale

02-18-2014 22:15:28

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 Re: Concern with my TD 6 1947-9...white smoke.....and in reply to thomaskd44, 02-17-2014 17:20:31  
By that picture with the single fuel filter you have a Bosch injection pump, not the more usual IH one which has two fuel filters.

I"m not sure of the useage, but the Bosch was listed in the parts book and injection parts book that came with the 1952 TD6 our family had.

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02-17-2014 18:56:10

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 Re: Concern with my TD 6 1947-9...white smoke.....and in reply to thomaskd44, 02-17-2014 17:20:31  
Thomas, The Injection pump on your TD6 is quite different than on my MD. I have never seen this type of a pump. I still think that you put oil in through the cap up to the level of the test port that you call a "T". Now if your diesel pump is leaking bad, they will fill with diesel and diesel oil will run out the test port.

2nd, something seems very wrong with how your diesel lines are connected. The filter you see with the glass jar is a water trap. The line that is disconnected from it should be the input line that goes to your tank. It is open. Is this where you see diesel coming out? Apparently someone by-passed the water trap. I also assume you removed the starter.

Normally the output of the water trap would go to the 1st stage filter, than to tranfer pump on the injection pump, then to final filter, and then from the final filter back to the injection pump. But it looks like from what I can tell on yours, the line goes from the tank to the transfer pump, then to your single filter, than back to your injection pump. The open line you see coming off the water trap might be the return line back to tank. All these MD & TD6 diesels have a return line back to the tank.

Since I am not familiar with the pump on your TD6 and how it seems to be plumped up, not sure I can advise you what more to do. Maybe someone who knows this pump can give you some advice.

The other thing you could do is post these pictures on the Farmall site. There are probably more folks on that site that are more familar with IH gas start diesels and with your pump. Maybe they could explain why your plumbing is not as I would expect. Hopefully someone will know that pump and be able to help you.


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