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Allis Chalmers Discussion Forum
Show Parts for Model:

Allis B

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nipzero

07-26-2014 08:17:12
173.45.187.104



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My tractor runs hot after about a half hour of mowing with my woods belly mower.

I just installed a new radiator, water pump, hoses.
Looks like I have good oil pressure...maybe the oil filter is clogged?




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nipzero

07-28-2014 05:45:37
173.45.187.104



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 Re: Allis B in reply to nipzero, 07-26-2014 08:17:12  
Dick,

Nothing to be sorry about.

I wish I had the funds to rebuild my engine.



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Dick L

07-27-2014 15:47:33
50.51.154.228



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 Re: Allis B in reply to nipzero, 07-26-2014 08:17:12  
Oh, I am so sorry I missed the meaning of your first sentence in your first post.

I thought when you posted (My tractor runs hot after about a half hour of mowing with my woods belly mower.) that you meant your tractor was running hot and was asking for help in figuring out why. My bad!



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nipzero

07-27-2014 08:56:25
173.45.187.104



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 Re: Allis B in reply to nipzero, 07-26-2014 08:17:12  
Well,

I am not running a thermostat...and it has good circulation..the heat gauge does not even reach the green mark.
I did flush the engine before I changed out the radiator.

I am going to mow again with it soon...and will see how she runs now.

She does not seem to be running hot right now.

(fingers crossed) :)



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nipzero

07-27-2014 07:11:43
173.45.187.104



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 Re: Allis B in reply to nipzero, 07-26-2014 08:17:12  
Thanks Steve,

I am getting a new oil filter just to eliminate that being a problem.



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nipzero

07-27-2014 06:20:20
173.45.187.104



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 Re: Allis B in reply to nipzero, 07-26-2014 08:17:12  
I sure do appreciate all the replies.

Still, it remains a mystery.

The temp gauge never gets close to green.
Good oil pressure,good water flow...

I have run this tractor for 20 years and it has always had this problem when mowing with the big woods mower.

Just the way it is I suppose.



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Dick L

07-27-2014 07:54:37
50.51.158.47



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 Re: Allis B in reply to nipzero, 07-27-2014 06:20:20  
with your last statement would Probly mean that you do have a bad thermostat or the block does have a build up of crud on the outside of the sleeves internally. I personally would remove the thermostat and try it that way if it indeed has a thermostat. If it still gets hot without a thermostat I would then remove the new radiator and fill the block and head with a rust dissolver and let it set for a while and then flush with high volume clear water. A lot of water. Normally the only way you can get the B type engine hot is to run it out of water if you have a good radiator with good air flow and good thermostat.
I have a tendency of jumping the horse power, weighting them down, over tiring them and working them hard. Over heating has not been a problem.

When I would up the horse power I did clean the inside of the block. I was pulling the 12 foot spring tooth in third gear at the time I stopped to take the picture. That engine has a 4 inch stroke along with a few other mods.

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Dick L

07-26-2014 16:17:28
50.51.158.47



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 Re: Allis B in reply to nipzero, 07-26-2014 08:17:12  
The oil filter being clogged will not cause the B to run hot. It would have to have the block really filled with crud bad to cause it to run hot. I do not have a thermostat in any of my B's and C's and they hardly get into the green when it is 90 outside running wide open in second gear thru tall grass.

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old

07-26-2014 11:47:25
209.86.226.27



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 Re: Allis B in reply to nipzero, 07-26-2014 08:17:12  
Bad thermostat or maybe it does not have one at all which can make one run hot also. Or maybe you need to do a vinegar flush to get the rust and lime out of the block



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nipzero

07-26-2014 10:09:02
173.45.187.104



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 Re: Allis B in reply to nipzero, 07-26-2014 08:17:12  
I checked the oil filter, and it seems plugged up.
Plenty of coolant movement with the new radiator and pump, and 50/50 coolant.

Gonna order a new filter and see what happens with that.

Oh yea..she also has a fresh oil change.. but not the filter.

Thanks for the replies...

Not sure about the advanced timing issue? How to check easily?



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steve(ill)

07-27-2014 07:04:00
50.106.201.193



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 Re: Allis B in reply to nipzero, 07-26-2014 10:09:02  
The oil filter does not work that way. The system works without the filter. 15% of the oil I bypassed into the filter to clean a small percentage. That oil is basically lost, only 85% is used for lube. If you have a BLOCKED filter, you actually get MORE pressure.



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Maark

07-27-2014 05:44:34
207.177.117.7



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 Re: Allis B in reply to nipzero, 07-26-2014 10:09:02  
If the oil filter was plugged up, you wouldn't have good oil pressure. Look for your problem somewhere else....



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maxwell99

07-26-2014 09:38:57
208.78.249.3



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 Re: Allis B in reply to nipzero, 07-26-2014 08:17:12  
Have you changed out the thermostat.

Might check the temperature with one of those hand held temperature guns to be sure of the degrees.

What coolant mix are you using, I think a 50/50 mix of coolant/water provides the best cooling mix.

Can you take radiator cap off and see coolant moving across the top of the radiator, if not, water pump impeller may have come off the shaft.

If you fill radiator with water, no cap, then remove bottom radiator hose, does the water rush out or or just dribble out slow. If water comes out slow the radiator may be stopped up and needs to be boiled and rodded out.

Good luck and let us know what you find wrong,

Remember: fastest way to ruin a good engine, run with no oil pressure, second fastest way to ruin a good engine, let it get hot due to poor cooling system.

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Jerry Coulter

07-26-2014 09:20:10
50.40.187.225



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 Re: Allis B in reply to nipzero, 07-26-2014 08:17:12  
Loose fan belt? Wrong width belt? Retarded ignition timing? Cooling capacity of the new radiator? If it has shutters, are they open?



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