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Discussion Forum

Allis Chalmers WD45

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02-09-2003 15:46:58

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I just purchased a WD45. According to the tractor's serial numbers, it is a 1953 model. The tractor seems to be missing on two cylinders. The plugs seem to be in good shape. I replaced the plug wires and distributor cap. The rotor and points look ok. When I take a screw driver and cross from the plug wires to the block,the two middle cylinders seem to be the only ones that make the engine start cutting down. I am not sure if I have a firing order problem. Is the #1 cylinder the one that is closest to the radiator. Which one is the #1 post on the distributor cap? Also, after it ran and warmed up, it looked like "frost" was building up on the carberator. Any help would be greatly appreciated. Thanks.

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Mark from MN

02-12-2003 20:28:28

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 Re: Allis Chalmers WD45 in reply to Rog, 02-09-2003 15:46:58  
had same problem on my wd. turned out to be the
#1 and #4 intake gaskets were sucked in and the
manifold bolts loose. had to heat, remove and replace all manifold bolt and replaced gaskets.

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02-11-2003 09:54:46

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 Re: Allis Chalmers WD45 in reply to Rog, 02-09-2003 15:46:58  
Might do a compression check, sometimes a valve can stick-

Timing marks are on the flywheel on the back (towards the rear) side, you have to remove the clutch pan to see them, at least I do. Just a T and an F.

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02-09-2003 18:56:26

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 Re: Allis Chalmers WD45 in reply to Rog, 02-09-2003 15:46:58  
You might try crossing those spark plug wires putting #2 on #3 and #3 on #2 and see if that helps. Also, It could be that those 2 spark plugs are bad? I wouldn't worry about the "frost". The other day I noticed that my AC-B did the same thing, I think that the "frost" has something to do with how cold it is out. Hope this helps, TractorMike

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02-09-2003 15:56:34

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 Re: Allis Chalmers WD45 in reply to Rog, 02-09-2003 15:46:58  
The firing order is 1243 on the WD45. #1 cylinder is the front one. My problem is that I cannot find the timing mark on mine. It is supposed to be on the flywheel but I cannot find it. Have you located the timing mark on yours? What does it look like?

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