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Doug-KS 
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Joined: 08 Jan 2013
Location: Wellsville, KS
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 Topic: D-14 radiator cap 13psi?
Posted: 13 Feb 2019 at 8:11pm |
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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
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Posted: 13 Feb 2019 at 8:24pm |
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13 is too much, I believe it should be a 7 psi cap.
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Hubert (Ga)engine7
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Posted: 13 Feb 2019 at 8:29pm |
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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.
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Just an old country boy saved by the grace of God.
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Doug-KS
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Posted: 14 Feb 2019 at 7:05am |
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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
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Posted: 14 Feb 2019 at 7:17am |
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Even with a 13# cap engine should not get hot .
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He who dies with the most toys is,
nonetheless ,still dead.
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DrAllis
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Posted: 14 Feb 2019 at 7:28am |
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Bad temp gauge.
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Doug-KS
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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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PaulB
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Posted: 14 Feb 2019 at 8:50am |
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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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If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
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Doug-KS
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Posted: 14 Feb 2019 at 10:11am |
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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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Jim.ME
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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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TimCNY
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Posted: 14 Feb 2019 at 1:40pm |
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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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DiyDave
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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... 
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Doug-KS
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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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Jim.ME
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Posted: 14 Feb 2019 at 8:23pm |
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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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Doug-KS
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Posted: 14 Feb 2019 at 9:27pm |
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Will do Jim, thanks for the help.
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