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Hubby opened up the F-20 today this is what we found.

A

Anonymous-0

Well-known Member
Well, My hubby opened up the F-20 today and this is what we found.
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What does the crankshaft look like? It may need to be ground undersize. Have your local auto machine shop to measure it. Hal
 
Please tell me that is a rod bearing cap... so where is the connecting rod? still jammed into the cylinder? Hopefully it did not smack the crank journal and bung up the crank.

My Earthmaster made a loud bang, then kept running. I took off the oil pan to find the connecting rod and bearing cap in the oil pan too! pistons still jammed into the cylinder.

I am hoping to install a new cylinder set and fire it up again.
 
lucky you caught that before it was too far gone!you should be able to shine the crank with #400 emery and then follow up with #600.if you cant get a new brg. just use a good used one.as far as brg. clearances it probably will be over spec. but us heavier oil like #40, 10-40,20-50 and all will be good. these engines are pretty forgiving.your not working it hard with field work so it should run for a long time.this will save you a pile of money on a rebuild.my experience, your decision.good luck.
 
I agree with rustred and eltoro. Assuming the crank journal is wasted, find a decent used rod, double check the crank journal and you should be good as gold.

What's more troubling to me however is the overheating. I have never been able to get mine out of the cold zone without really (and I mean really) working it. More than likely, most of the radiator tubes are plugged. When I rebuilt my F-20, there was several pounds of rust scale in the block but that no effect on its running temp. The good news? You can fix the radiator yourself simply by disassembling it and passing something (like a coat hanger with a loop on the end) through each of the tubes. You may need to use something more substantial if your tubes are really clogged. A radiator shop speciallizes in this sort of thing if you're not so sure about doing it yourself. Make your own cork gaskets and you should be good to go. Also suggest you use some gasket shellac or gasket sealer to seal the joint that much better.
 
We went to our local Farmall friend tonight. He had a set of bearings to fit it & is helping us put it back together. He has done many of them. Glad he lives close by.
 
They checked the crank and it's good. That was the worse of it. They think it should be back up and running by the weekend. Hope, hope!
 
Don't use emery cloth. it is WAY too course. Use what is called crocus cloth in a long strip and about as wide as the journal. Pull all the spark plugs out and have someone crank the engine over while the crocus cloth is pulled over the journal to be cleaned. I hold the ends of the strip together with two fingers and gently pull straight down and evenly while the engine turns. If you dont turn the crank and just run the strip back and forth you can get the crank out of round! you don't want to remove a lot of metal, you just want to polish off any rough or "high" spots. Get the crocus cloth from NAPA.
 
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