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Did I hurt it?

B

Bill in IL

Well-known Member
Working the M tonight chopping a load for the calves and broke the fan belt. Thought it smelled hot as I was finishing up and noticed the exhaust manifold was glowing orange. Nothing I haven't seen before on an old farmall. So I drove home quarter mile dropped the wagon and then I noticed the fan wasn't moving and it had started boiling the radiator over too. That was when I really noticed I had a problem so I shut it down.

How much heat can those old engines take before you start having serious problems?
 
The fan belt turns the water pump. With out it the coolant will not circulate. If it did not sieze up it should be ok, but it will reach max. temp after it is shut off. If it cools slowly, it should not crack the head.
Any Damage? You won't know until after the next time you work it hard.
SDE
 
Back when I was a teenager I was mowing with dads C when I noticed steam from the radiator and the temp guage was up near the hot. range. Now on that tractopr the temp gutage never gets out of the cold range. Ie had been low on coolant and didn,t circulate, cso it got very hot. Hot enough to burn the valve cover gasket, but it did not do any other severe damage. The valves were hot enough it dieseled for five minutes after I shut it off!
 
Have ran a lot of engines hot in my days and if it was still boiling and/or steaming has never been a problem. If you run one until it boils all coolant out thats is different story.
 
Boiling coolant (as NDS indicates) will keep it at boiling temp until 90% of the coolant is gone. It will be fine. You were coasting it back, and it had no chance to get crisp inside. Very small chance of damage. Jim
 
you wont see if its damaged till you pull the engine apart.then you will see how tight the pistons pressed against the cyls.by the score marks on the skirts. yes it will keep running but thats dont mean its not recieved some damage. put it this way, you didnt do it any good.really want to know pull it apart, inspect and then make your decision.
 
I started it this morning and drove it up to the shop seemed to run fine, started the same anyhow. Guess I will see for sure when I get it back in the field.
 
About 25 years ago I got my A that I used with belly mower out in spring and went through my maintenance routine except for one thing. Back then I drained water in fall and I forgot to fill radiator, after some time mowing I noticed smoke coming from under hood {was from oil on engine ) and suddenly ralized what I had done. Shut down, let it cool for couple of hours, filled radiator and went back to mowing. I am sure some harm was done to engine but I used it for mowing for several more years and it is running fine today.
 
You can either pull the engine apart...or you can just run it for the next 25+ years and go pull at the fairs.Nothing will be wrong with that M.
 
Bill, I agree with Jim. If it was still boiling coolant out of the overflow when you shut her down, it should be fine, with no damage. If you boiled it dry, there is damage.

So, was there any coolant left when you shut it down? Was it still boiling out of the overflow?
 
I pulled a big finish mower with my farmall M.
It really dragged it down till it almost stalled.
now when i use my M with nothing attached, it miss fires when it is warmed up and under a small load . what needs fixed?
 
first of, are you saying it ran fine until you "over worked it"? How are the plugs, old or new? Points and condensor, ditto? timing, it is timed correctly? Is the advance working on the distributor?

I would start with those items. Then you can move on to things like the carb.
 
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