[Farmall] Engine Overheating

[Ben Wagner]

I doubt if there is crud in the radiator or hoses, since I had the system
apart a few weeks ago.

You mentioned the fourth option, the head gasket leaking hot exhaust into
the coolant.  I have a hairline crack in the block between cylinders 3 and
4.  The previous owner found it with a magnaflux at a machine shop; he said
it was only a hairline crack.  Could this crack leak exhaust gas into the
coolant?

I did take off that gooseneck bracket when I painted the tractor a few weeks
ago.  I wiggled my light into the head, but I didn't see much gunk hanging
on the twists and turns.  That doesn't mean there isn't still some stuff
farther up in the block.

Thanks for your help,
Ben Wagner

On Tue, Jul 26, 2011 at 4:37 PM, <szabelsk at gdls.com> wrote:

> First possibility is partial blockage of the radiator from crud settling
> in the bottom or plugging the tubes (some or all).
>
> Second would be crud in the radiator hoses.
>
> Third could be crud in the block itself.
>
> Fourth could be a head gasket where exhaust is getting into the coolant.
> What you think is overheating is actually the exhaust pushing the coolant
> out of the radiator. Also makes the coolant hotter as well.
>
> If you remove the lower radiator hose you should be able to check for crud
> in the bottom of the radiator with a homemade bendable scoop of some kind,
> or a turkey baster with an extension hose.
>
> On the block, unbolt the gooseneck and you should be able to get somewhat
> of a look into the block. (When I did this on my Cub, I found what looked
> like two pieces of welding rod in the opening.)
>
> For cleaning the radiator, you can try flushing with plain water (garden
> hose). Remove the drain plug for the radiator and the lower radiator hose
> to get as much unrestricted flow as possible. Let it run into a tub or
> large bucket so you can see what comes out.
>
> For cleaning the block disconnect the upper hose from the radiator and
> push the hose into it. With the gooseneck removed, you should get a good
> flow. Again, try to catch it in a tub or large bucket and see what's
> coming out.
>
> If there is any crud, and if it's been there for some time, it could be
> pretty solid and might take some doing to get it all out.
>
> Carl Szabelski
>
>
>
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