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DLTX 10 issues

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Jerry Pevehouse

05-11-2008 07:22:37

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Had a friend rebuild the carb for my restoration. First time starting, ran perfectly. Fuel valves apparently didn't shut off the fuel, and the next morning, cylinders full of gas. After draining oil and replacing, cutting a new fuel valve into the line, turned the fuel on with the air intake side loose only to see after bowl filled fuel running out intake side of carb. I closed the valve and tractor started. After a few moments I turned on the fuel to see if the tractor flooded but it again ran perfectly and no fuel came out of intake side. After shutting the tractor down, I took the bowl off and checked the float level and to see if the needle and seat were working properly. It seemed like they were, but I dissasembled all to see if the float had any fuel inside but it was empty. Reassembled carb and again checked the needle and seat and seemed to hold fine. Had the same results after reassembly. I did as before allow the tractor to idle for at least an hour. Anyone got any ideas??? Don't think the float level is wrong or the float has a hole in it. Thanks, Jerry

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Jerry Pevehouse

05-12-2008 09:58:27

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Re: DLTX 10 issues in reply to Jerry Pevehouse, 05-11-2008 07:22:37

Thanks for your help guys. I think I'll order a new float for the carb, and make sure myself that it's set to the right level. Just couldn't figure out why the gas was coming out the intake side,yet the tractor started and ran perfectly, all I can figure that the float has a pin hole. I've checked the needle and seat and they are holding when I turn the bowl up-side down.

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Mike M

05-11-2008 11:39:28

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Re: DLTX 10 issues in reply to Jerry Pevehouse, 05-11-2008 07:22:37

Don't forget to check out the casting where that needle seat screws into as alot of them the gasket seating area is bad or some of the seats theirselves are not machined correctly on the outside taper and won't let that gasket seal. This will let gas around the gasket even if the needle and seat seal up.

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Loren in Iowa

05-11-2008 08:45:21

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Re: DLTX 10 issues in reply to Jerry Pevehouse, 05-11-2008 07:22:37

Had the same thing happen. Tried every part that could be replaced. Sent the carb to Burrey's. They found that the bowl vent hole was plugged.

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Duane Larson

05-11-2008 08:14:08

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Re: DLTX 10 issues in reply to Jerry Pevehouse, 05-11-2008 07:22:37

Jerry,
It is not at all unusual for a new needle and seat to leak - I pull a vacuum on them before installing, and if the needle and seat won't hold a vacuum, I polish it in the lathe until they mate up (and some never do). It's always possible a piece of junk lodged under the needle also, and that can wash away with more incoming fuel. So, a couple of thoughts - install an in-line fuel filter if your fuel tank (and fuel cans) may have rust in them. On my own stuff, after a carb rebuild I put a small can under the carb bowl drain, shut off the fuel, open the bowl drain, and let it sit. I check periodically to see if the can is acquiring any gas, and that tells me something is leaking.

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PBrowning

05-11-2008 08:18:49

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Re: DLTX 10 issues in reply to Duane Larson, 05-11-2008 08:14:08

Duane -- Very Good advice -- With these old tractors, one must constantly be on guard against debris in the fuel. Of course, clean fuel and keeping it clean was ingrained into us from day one, and so to assume clean fuel in all too easy when answering a question. Good Points. Thanks. (PatB)

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PBrowning

05-11-2008 08:05:53

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Re: DLTX 10 issues in reply to Jerry Pevehouse, 05-11-2008 07:22:37

The phrase "had a friend rebuild the carb" always gives me heartburn. But assuming all is well, your story isn't too far out of line with instructions a dealer gave my Dad on his '36-A tractor after replacing the float (valve), and that is that it make take a full day of working in the field to "seat in" the needle valve. This was a warning to my Dad not to depend on the float valve to prevent flooding the cylinders with raw fuel during non-run time.

By & by, it will seat-in. In the meantime, you will need to depend on a fuel shut-off mechnanism that works. It appears that you have done that.

Further, so as to not leave you with any false impressions about that float valve -- proud owners of these old tractors almost NEVER depend on the carb's float valve to block fuel flow down into the engine! SO -- make fuel shut-off your PERMANENT way of stopping the engine. (PatB)

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Pete76NY

05-11-2008 07:44:13

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Re: DLTX 10 issues in reply to Jerry Pevehouse, 05-11-2008 07:22:37

Jerry, I have too many models, and too many brands to remember what tractor that carb goes on...is it a 50, 60, or 70? If so, you need to rebuild the upper part of the fuel valve...the fuel is allowed through by oil pressure running between diaphrams, if tey are bad, it will continuously run into the carb and then on into the crank case. It's a cheap/easy fix!

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PBrowning

05-11-2008 08:14:02

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Re: DLTX 10 issues in reply to Pete76NY, 05-11-2008 07:44:13

Hi Pete:

Assuming he has the right carburetor -- his tractor would be an early "B" -- up through 1940's production run. It appears he had two issues that grabbed him in the shorts at the same time - (1) A bad fuel shut-off and he's fixed that, and (2) a "reluctant" float valve which will eventually "groove in". Have a Good One!

For a table telling which carburetors came with each of the Lettered Series Waterloo tractors, see the JD-H site (below), and once there, scan across to ARTICLES 1, and from the drop-downs, select CARB ID CHART.

While at the JD-H site, see our latest post under ARTRICLES 2, entitled OIL PRESSURE ISSUES. It is slanted toward the "H" tractor, but generic enough to help for any two-cylinder tractor. (PatB)

Restoration Site, JD H

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