Posted by Janicholson on August 17, 2013 at 05:24:21 from (74.60.94.18):
In Reply to: Ih 444 help needed posted by john *.?-!.* cub owner on August 16, 2013 at 20:35:42:
The Bent and broken pushrods are typical of a crashed cylinder. Either a mechanical part like a screw or bolt got into the cylinder, or almost any solid material. A diesel has almost no clearance between the valves and the piston top. See if the valves have come back to their normal closed height. If one is way too far up in the head, it may have no head on it. If either is lower than the other cylinders, a bent valve, or foreign object is preventing its closure. I think there is no way out other than pulling the head. But if you choose to see the effect of putting new pushrods in it, straighten the bent rod until it is just almost perfect, but not quite. Then put it into the same hole it came out of with no further adjustment (It will be used only for this test) then using a jacked up rear wheel and road gear, turn the engine watching that valve. When the valve begins to open, feel in the effort needed to turn the engine on the wheel. If it gets hard and the pushrod gets difficult to turn with pliers, there is a foreign object in there. Do the same for the other valve using the same pushrod if the first one cycles through with no issue. If you find both to be free to travel through a full several turns of the engine with no differences between the good cylinders and the damaged one (using only one push rod) you can decide if you want to chance putting new pushrods in it and giving it a start. (I would not) I do not know about the PTO, there are more than one style. Jim
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