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D-14 radiator cap 13psi?

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Doug-KS View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Doug-KS Quote  Post ReplyReply Direct Link To This Post Topic: D-14 radiator cap 13psi?
    Posted: 13 Feb 2019 at 8:11pm
What radiator cap should be on a D-14? This one has a 13psi cap. Tractor is running hot, wasn't sure if cap is holding too much pressure or if that could be a problem?
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Jim.ME View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim.ME Quote  Post ReplyReply Direct Link To This Post Posted: 13 Feb 2019 at 8:24pm
13 is too much, I believe it should be a 7 psi cap.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hubert (Ga)engine7 Quote  Post ReplyReply Direct Link To This Post Posted: 13 Feb 2019 at 8:29pm
X2 - 7 psi. May need to clean out all the dust and trash in the radiator fins if it just runs hot when worked hard and maybe replace the thermostat if it gets hot quickly.
Just an old country boy saved by the grace of God.
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Doug-KS View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Doug-KS Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2019 at 7:05am
Thanks, will get a 7psi cap.  Radiator looks new, no trash in it.  It gets hot quickly, will check thermostat next.   Thanks
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Fred in Pa View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fred in Pa Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2019 at 7:17am
Even with a 13# cap engine should not get hot .
He who dies with the most toys is,
nonetheless ,still dead.
If all else fails ,Read all that is PRINTED.
Just because you do not have the tools for job , it dose not make it a bad design.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2019 at 7:28am
Bad temp gauge.
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Doug-KS View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Doug-KS Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2019 at 8:08am
old temp gauge was not working, so put new gauge in.  Gets hot quickly.  
Another question, on the thermostat housing, there is a bypass hose that is just sealed off.  Where is that bypass supposed to go and could that be causing the problem?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PaulB Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2019 at 8:50am
On the D14 as well as the D10, D12 & D15 series I the sensor in in the top of the head next to an exhaustvalve/port. If you have a new gauge, it may very well be incorrectly calibrated. Most any new gauges will not read properly at that location. Verify the temperature with an infrared thermometer or at least use one stuck in the top of the radiator.
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Doug-KS View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Doug-KS Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2019 at 10:11am
Curious, any way to mount it in another location??  Did test with heat gun and it read lower than the gauge but head still seems hotter at that part of the head?  Engine block was not that hot.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim.ME Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2019 at 11:52am
The bypass hose goes between the water pump and thermostat cover.

I believe it is common for a temp gauge to be at the hottest location on an engine. You may have some build in the head restricting circulation as part of the issue.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote TimCNY Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2019 at 1:40pm
Just bring it here and run it in the winter. It'll never get hot lol...

I'd suggest a good cooling system flush. It may or may not fix the problem, but either way, a good flush would NOT hurt. You say the radiator looks new, maybe the PO replaced it because he/she thought it would solve the problem.

Edited by TimCNY - 14 Feb 2019 at 1:41pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2019 at 6:11pm
I agree with others on gauge location and IR thermometer.  While you are pointing at things, with it, you might also diagnose that the thermostat is in upside down, or that there's a lot of crud, in the water jacket.  Also wouldn't hurt to take the radiator out, and wash it, take a light and look through the fins, and see what seeds and crud are blocking the passage of air, through it.  I pressure wash mine, with a cheap electric pressure washer, don't wanna overdo it, and ruin the radiator...Wink
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Doug-KS Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2019 at 7:40pm
The water pump does not have the bypass port on it. I guess that is why they plugged the bypass port on the thermostat housing, and looks like they put it on wrong direct versus Jim's picture. Here is what it looks like. Plan on replacing the thermostat this weekend and see if that helps.




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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim.ME Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2019 at 8:23pm
If the new thermostat doesn't have a bleed hole in the valve, drill one to vent the air out of the block.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Doug-KS Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2019 at 9:27pm
Will do Jim, thanks for the help.
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