460 over heat issue

Tractordan · Jul 22, 2014

I lent my 460 gas out to a friend who was down to 1 tractor for
haying tonight he called and sad it over heated so I went down
and this is what I found he just started to bale and temp
headed right up to 230 then blew out a bunch of water we got
it cooled down refilled radiator and fired it back up after just a
few minuets same thing went right to 230 and blew off I would
say a gallon and a half to two gallons belt are tight water pump
don"t seem to be loose or dripping.
Thinking maybe thremostat is stuck?
Thanks for any input.
Dan

notjustair · Jul 22, 2014

Heating up that quick something has to be blocked. Either the rad or thermostat. Be careful adding cold water to a very hot engine.

Curt Cooke · Jul 23, 2014

At worst, a cracked head, at best a stuck thermostat. Real lucky would be a missing belt. I believe the water pump is driven by a different belt than the fan.

rustyfarmall · Jul 23, 2014

(quoted from post at 17:32:37 07/22/14) I lent my 460 gas out to a friend who was down to 1 tractor for
haying tonight he called and sad it over heated so I went down
and this is what I found he just started to bale and temp
headed right up to 230 then blew out a bunch of water we got
it cooled down refilled radiator and fired it back up after just a
few minuets same thing went right to 230 and blew off I would
say a gallon and a half to two gallons belt are tight water pump
don"t seem to be loose or dripping.
Thinking maybe thremostat is stuck?
Thanks for any input.
Dan

The fact that it almost immediately belches water out of the radiator is an almost sure indication of a defective head gasket.

Tractordan · Jul 23, 2014

It don't push out water until temp gets way up near 230

Tractordan · Jul 23, 2014

Yes separate belt but both good
Only hope it's stuck thermostat gonna tow it back to my shop and hopefully tear into it Saturday morning

charlieu · Jul 23, 2014

Here is a simple test that you can do to check for a possible leaking head gasket.

1. Fill radiator to the top with water when the engine is shut down.

2. Install a good radiator cap that fits tight and is air tight.

3. Attach a rubber tube to the lower end of the overflow pipe of the radiator.

4. Hang a clear plastic jug (2 qt or larger) on the side of the tractor with about a qt of water in it.

5. Insert the hose into the water and make sure it stays under water.

6. Start engine and run at 3/4 throttle.

7. Watch for a continous stream of bubbles in the water bottle.

8. This air would be coming from a bad head gasket or a cracked head or crack in sleeve or block.

9. Good luck Charlie

460 over heat issue

Tractordan

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notjustair

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Curt Cooke

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rustyfarmall

Well-known Member

Tractordan

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Tractordan

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charlieu

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