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I NEED HELP WITH MY WD-45

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STERLING ANDERE

02-02-2001 18:34:58




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JUST BOUGHT A WD-45, IT HAS AN EXAUST LEAK, IT IS LEAKING BETWEEN THE MAN. AND THE BLOCK. THERE IS A RING THERE THAT IS LOOSE ON ONE CYL BETWEEN THE BLOCK AND MAN. THE OTHER 3 CYL. ARE FINE. IS IT HARD ON THE ENGINE TO RUN THE TRACTOR LIKE THIS? AND IS IT MUCH OF A JOB TO REPLACE THE RING? A THINK IT IS A 1948 OR 1949.




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Steve

02-04-2001 16:39:26




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 Re: I NEED HELP WITH MY WD-45 in reply to STERLING ANDERESN, 02-02-2001 18:34:58  
It's not a WD45 if it's a 48 or 49. They weren't built until late 52, it would be a WD. However they both have problems with exhaust manifold at this age. The manifold needs to be planed and new gaskets installed. If you let it go too long it will erode away the head which can get much more expensive. If you have any more questions about removing it let me know, I've done 5 in the past 2 years.

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David Thomas (MO)

02-03-2001 11:50:53




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 Re: I NEED HELP WITH MY WD-45 in reply to STERLING ANDERESN, 02-02-2001 18:34:58  
The others have responded with good advice. The only thing I would add is that if the nut is frozen on the stud but the stud turns in the head and you haven't drained the radiator, wait and remove that one last. (Don't ask ;-)

The exhaust leak isn't a critical problem but it should be fixed or it will errode both the manifold and the head. Mine had been let go too long so that when I got it (last year) there was a good 1/4 inch gap between the head and the manifold on #1 (no gasket left at all) and #4 was leaking too. I didn't want to take the head off and didn't have a welder handy to build the head back up so I used muffler patch to build up the erroded areas on both the head and the manifold. Filed them flat and slapped 'em back together with new gaskets. The engine only has a couple of hours on it now but everything seems to be hanging together just fine. With luck this cheap fix will last until the engine needs overhauled, (ten years or more with my fingers crossed).

David

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Brian G.

02-03-2001 10:29:57




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 Re: I NEED HELP WITH MY WD-45 in reply to STERLING ANDERESN, 02-02-2001 18:34:58  
Chances are, it's the #1 port. That one always seems to go first in my experience. Running without the gasket will "burn-out" the manifold so it will be difficult to get a seal even with a new gasket. When I replaced the gaskets on my WD, the surface on the front port of the manifold was getting a little thin so I put the manifold in a vise and, using a very large flat file, took about a 32nd off the face of the manifold so that I got down to a little more "meat" on the #1 port, and to get the manifold straight across all the port faces. It could probably be done with a milling machine a lot easier but these original manifolds are a little brittle, so one would have to be very careful. My WD-45 manifold was a little better, but I "squared" that one up with a file as well. My other WD-45 has an aftermarket manifold which, believe it or not, has a lot more "meat" in it and looks like it should last a long time. Bite the bullet and replace the gaskets; it'll save you expense in the long run and don't you just hate to hear any engine with an exhaust leak at the manifold? These Allis's sound real sweet when the manifold and the muffler connection are tight.

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Lawlerminn

02-03-2001 00:33:27




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 Re: I NEED HELP WITH MY WD-45 in reply to STERLING ANDERESN, 02-02-2001 18:34:58  
Agree with above post that your problem is probably part of the gasket. However, it has been my experience that delaying repairs just because the problem is "only a nuisance" only results in the problem becoming a major thing - and then when you can least afford to have it happen. Recommend you find some time to replace the gasket. Then, plan on spending 3 to 4 times as much time as you think it will take to do it. These are 50 year old machines and nuts are frozen, bolts rusted in, etc. Very few bolts or nuts come off easily, most require a lot of penetrating oil, heat, and plain old effort. You would also be advised to have some easy outs and thread tappers handy also. Seems like no matter how careful you are, a bolt will strip or bust on you. Many years ago, I would send the wife and kids to the movies when I worked on the old machines since I did not think it appropriate for them to hear some the the language that came from my mouth during the process. All that is part of the pride in having a great old machine. The effort expended to keep it running as smoothly as it did 50 years ago is usually well rewarded with the joy of using it. Good luck and have fun.

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John C-IL

02-02-2001 21:16:56




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 Re: I NEED HELP WITH MY WD-45 in reply to STERLING ANDERESN, 02-02-2001 18:34:58  
If your tractor is a 1948 or 1949 it is a WD. WD45 Production began in 1953. However this applies to both, The ring is probably what is left of the cup that holds the gasket in place. It is easy to replace but you have to remove the manifold to do it. Probably not a good idea to run the tractor hard with a big exhaust leak,but a small one is annoying more than anything else. I replaced the manifold and gaskets on my D-17 which is basically the same engine, took about and hour by the time I got the manifold loose. John

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