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Allis B

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02-14-2003 10:31:57

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My Allis has been completely rebuilt except for the cam and crank were not taken out and I find myself 180 out. Everything to do with timming is correct that a fella can put his hands on from outside the engine including the (govenor gear) I'll call it. That is the govenor gear mark is timmed to the cam gear mark and like I say everything else is where it's supposed to be but the exhaust is sucking in and the carb blows your hand away when you turn her over.

Sooo, what to do now, someone said the cam and\or crank gear need to be timmed can they be taken off without tearing the whole engine apart again or that the starter could be turning the engine backwards which way is the engine supposed to turn? Clockwise right? I've recieved lots of help on this forum during this process. I'm close now guys.


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02-14-2003 18:02:40

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 Re: Allis B in reply to Jim, 02-14-2003 10:31:57  
take the valve cover and the front gear cover off.
--crank the motor by hand and watch the #1 intake valve open. now the no 1 piston is about at the bottom of the stroke.
--turn the crank shaft 180 degrees. now the crank is about at the top of the stroke on #1piston ready to fire.
--put a straw in the #1 spark plug hole and turn motor slowly and watch straw continue to rise untill it stops (top dead center)
--look thru the 1 inch hole in the left side of the fly wheel housing, you should stop cranking when you see the TDC mark in the hole.
--the timing gears on the front end should now have the alignment marks in alignment.
--take off the distributor or mag cap and the rotor should be pointing at #1 plug wire. if it is not, you need to move the wires on the cap to the right hole, or remove the mag, turn it to the correct position , and reinstall.
--everything is in alignment when #1 (front) is at the top of the stroke.

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Justin Ny

02-14-2003 16:27:46

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 Re: Allis B in reply to Jim, 02-14-2003 10:31:57  
Jim, I know this might sound stupid but check your firing order,If it is back firing through the carb it will blow your hand off.Not saying this is it but could be,1-2-4-3 Justin Ny

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02-14-2003 12:13:55

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 Re: Allis B in reply to Jim, 02-14-2003 10:31:57  
(Somehow, previous answer did not get posted)
Jim, easiest way to tell engine rotation is to look at fan. Airflow goes from front of tractor to rear. Rotation of fan can only be one direction to accompish this and is likely to be clockwise FACING engine; which is also the direction of rotation when hand cranking. (Incidently, the PTO shaft turns clockwise when looking in SAME direction as tractor. For instance, observe a standard hammermill or feeder wagon, and the direction they are driven.) Assuming the engine does what you're describing with the ignition on, is the air that's coming out of the carb hot? Backfiring? If you're getting air blowing out the carb...something got out of time.

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Phil Auten (TX)

02-14-2003 11:42:14

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 Re: Allis B in reply to Jim, 02-14-2003 10:31:57  
If the gears were never unmeshed it would be hard to get the timing that far off. I suspect that the gears were moved and indeed the timing is 180 out. You should be able to remove the timing cover and check the relationship of the gears relative to their various timing marks.

Even if the battery is installed backward, the starter motor will only turn one way, not reverse direction.

Good luck,

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