Allis C Locks Up after Use

Jim in NC

Well-known Member
I mowed with my C for about an hour and everything worked as it should. Oil and coolant were plentiful and oil pressure was good. Later in the day I went to put it in the shed and it would not turn over. Thinking the battery needed charging, I tried it the next morning and realized that the engine is seized.

Everything under the valve cover looks normal. A neighbor said to check the governor weights. He has seen one break and stop an engine. All is well there.

Yall got any ideas about this. Thanks in advance.
 
The starter and plugs have been removed. A locked starter was the first thing I checked. It will not rotate frontwards or backwards. I shut off the engine when I finished and it was running fine.
 
transmission is in neutral and tractor will roll ? Not stuck in gear ?..... Push in clutch and it appears to work ?
 
If you have the plugs out and the starter off then maybe the transmission is stuck in 2 gears. Have you tried to turn it over with the clutch locked down plugs out??
 
old and steve, I can change the gears, at least it feels that way. We pulled the tractor with it in neutral and put the pto in gear to raise the 5' belly mower.
 
Take the starter off and then you can get to the teeth on the flywheel take a bar or very large screwdriver and see if you can turn it backwards a little.If its a piece of the Governor in the timing gears it'll probably turn backwards.Just might be the starter locked if so then when you take off the starter it should turn over no problem
 
I would drop the pan and see if something came loose. I found an oil pickup lodged between a rod and the block once. If you don't find anything under the pan, remove the rocker arm assembly and make sure all the valves work up and down as they should. Look for a bent pushrod as you loosen the assembly. That would point to a valve problem. I had a car that a valve head broke off and lodged between the piston and head.
One other thing to check is for bolts that are on the side of the bell housing. I have seen cultivator bolts left in the bolt holes. Most of the time when that happens they will fall out but sometimes they get screwed in far enough to lock the flywheel.
 
pull plugs and see if one of the jugs is full of coolant.

have seen some heat up at shutoff and pop a gasket and fill a cyl and hydrolock them
 
Please let us know what you discover as this is instructive for us based on your description of what happened. Thanks and good luck !
 
Will do. With some family and holiday stuff happening mixed with trying to settle an auto accident claim, we have been pretty busy over the last week.
 

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