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Thread: Cat D7E Radiator Leak

  1. #1
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    Default Cat D7E Radiator Leak

    All i can tell at the moment is it is coming form the Top right hand side of the radiator if your looking at the front. The same side as the cap.

    I will have to tear into it to see where the actual leak is coming from?

    Are these rebuild able radiators with drop in cores or are they all one piece? I was thinking i would solder it up but if its a seal thats leaking on the cores then what am i in for?
    D7G 92V, D7E 47A, HD11EC and alot of other Ag tractors and Brangus Cattle that keep me busy.

  2. #2
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    They are all one piece cores with soldered tubes. If your cooling system pressure is gone then I would pull the whole assembly and take it in and have it cleaned and repaired. As long as the tubes are good they can repair it, it could also be a header gasket seeping.

  3. #3
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    Quote Originally Posted by Rome K/G View Post
    They are all one piece cores with soldered tubes. If your cooling system pressure is gone then I would pull the whole assembly and take it in and have it cleaned and repaired. As long as the tubes are good they can repair it, it could also be a header gasket seeping.
    Yea my cooling system pressure gauge is the one gauge that doesnt work?

    What is the pressure suppouse to be and what is the MAX safe temperature on that engine.
    Last edited by DWC7; 11-20-2018 at 08:26 AM.
    D7G 92V, D7E 47A, HD11EC and alot of other Ag tractors and Brangus Cattle that keep me busy.

  4. #4
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    Should be around 14 psi. replace the pressure valve on top also and make sure the housing is clean, allot of times wasps will plug things up in there. I put a small piece of stainless screen in the outlet hole to prevent that. Dont run it hot or close to the red!!! dont run over 200 degrees.

  5. #5
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    Quote Originally Posted by Rome K/G View Post
    Should be around 14 psi. replace the pressure valve on top also and make sure the housing is clean, allot of times wasps will plug things up in there. I put a small piece of stainless screen in the outlet hole to prevent that. Dont run it hot or close to the red!!! dont run over 200 degrees.
    Ok ill check that and clean out my pressure valve. Makes me wonder if it was building up pressure and coming out a weep hole somewhere? and thats the leak im seeing.

    Ill take the top cover off and inspect it. It got to 190 the other day and i let it cool a few minutes. But if its getting that hot it wont handle the 100deg texas heat. Which when it gets that hot i dont stay on them long. I try to do most of the hard work in the cooler weather.
    D7G 92V, D7E 47A, HD11EC and alot of other Ag tractors and Brangus Cattle that keep me busy.

  6. #6
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    Ten-4, if it hasnt been out and cleaned for several years then it might be due for cleaning. Also check the belts and pulleys for excessive wear.

  7. #7
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    Quote Originally Posted by Rome K/G View Post
    Ten-4, if it hasnt been out and cleaned for several years then it might be due for cleaning. Also check the belts and pulleys for excessive wear.
    Will do. I know it hasnt been out. I pressure washed it ALOT when i got it. But other than that thats all. It looks really pretty clean considering. If the leak is bad then i will pull it and have it fixed so it will be right. If its simple i plan to keep running it a while. This is a project that ive only had for about 6 months. It had been sitting for about 10 years.

    I need to get some use out of it. But have no problem making something right whatever it takes. I dont half a$$ things..
    D7G 92V, D7E 47A, HD11EC and alot of other Ag tractors and Brangus Cattle that keep me busy.

  8. #8
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    Good. Just watch the temp gauge and others. I always like to use compressed air unless there is grease or oil buildup for some reason, water tends to make mud and dries packed in tight areas.

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