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Old 08-18-2022, 06:03 PM   #1
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Oil cooler?

Hi all, any mechanics out there that know what this box is? I thought it was the oil cooler, but when googling online I don't see anything like it. The pipe under it comes from my radiator lower connection, and back to the engine/recovery tank. Looks like two high pressure hoses on top of it.

This is on my 2009 Monaco Camelot with a Cummins 8.9L 425 ISL.

Thank you in advance!Click image for larger version

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Old 08-18-2022, 07:28 PM   #2
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Transmission oil cooler.
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Old 08-19-2022, 07:49 AM   #3
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My transmission cooler is internal to the radiator.



Easiest thing to do is trace lines to see what it is cooling.
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Old 08-19-2022, 01:54 PM   #4
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Same setup as mine. That is the transmission cooler.
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Old 08-20-2022, 08:01 AM   #5
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Thanks guys!
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Old 08-21-2022, 04:14 AM   #6
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Is tubing badly rusted? Are you out on the road? Oil ,trans and power steering cooling lines often rust through right under support/mounting clamp. Right before and after the clamp can be like new condition. If that's the case a compression fitting can make semi permanent repair. Provided enough slack to cut out with tubing cutter and splice.New line/s should not be all that too difficult to replace. All line repairs are just more time consuming than complicated. A line wrench is best to use. If old line nut is very difficult to break loose, you can break or cut line and use 6 point socket. Better than rounding off the nuts they are not really made of hard steel.
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