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Farmall & IHC Tractors Discussion Forum
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1944 M Timing Gears

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Matt Demuth

01-09-2008 16:32:22




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I posted to the forum about a month ago because my
M would not start after I screwed up the hydraulic lines. I received a great amount of very helpful information (Thanks to everyone that reply"d) but alas it still would not start. Out of desperation I took the front end off and removed the timing gear cover. Everything looks good. The main gear is not loose and the keyway lines up with the keyway for the crank pulley. The timing marks are lined up. The cam gear is solid. Is there anything I am over looking? Any thing I can test before I put everything back together? I would hate to put it all back together and then find out I over looked something. By the way, I did check compression before taking it apart and 3 cylinders were in the 90 to 95 pound range and 1 was at 55. Any additional advise would be appreciated. Thanks, Matt

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teddy52food

01-09-2008 17:33:51




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 Re: 1944 M Timing Gears in reply to Matt Demuth, 01-09-2008 16:32:22  
Take the valve cover off and make sure # 1 & 4 come up to tdc when the marks line up. Also check & see if the points break at TDC. You may have a stripped gear in the distributer. Let us know what you find & we will go from there.



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John M Seasly

01-09-2008 17:13:33




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 Re: 1944 M Timing Gears in reply to Matt Demuth, 01-09-2008 16:32:22  
You shouldn't have more then a 10% between cylinders, also with compression of less then 100 I was taught it won't start. On the cylinder that has the low compression; squirt a little oil into the cylinder and recheck the compression. If it goes up it is bad rings; if it remains the same valves.



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Janicholson

01-09-2008 17:30:41




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 Re: 1944 M Timing Gears in reply to John M Seasly, 01-09-2008 17:13:33  
John, with respect, the 44 H may have been a dual fuel engine with a PSI of less than 90 new. Engines with even 50 PSI compression pressure will run, all they need is to draw fuel into the cylinder, and burn it well enough to spin the crank. Some single cylinder engines have compression less than 50 PSI. The issue with this engine is (opinion) not compression (or even valve timing), but either spark timing, or fuel intake related. JimN

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Janicholson

01-09-2008 16:50:56




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 Re: 1944 M Timing Gears in reply to Matt Demuth, 01-09-2008 16:32:22  
The only thing I could recommend is to rotate the engine through several cycles with the plugs out and watch the gears and the distributor shaft. The distributor shaft is a two part item with the centrifugal advance and springs in the middle. If it all rotates, and all valves move, I would put it together. I believe the compression (though not what you would like on one cylinder) is the telling that the drive gears are in and functioning. Check the part number on the cam gear and see if it has been updated to the later stronger gear from a SM, or 1951&1/2 late M. If not I would do it now. JimN

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