Old D-2 Cat oil cooler question

GeneMO · May 25, 2016

I have a leak in the oil cooler in this little Cat. I got to thinking about maybe plumbing it out of the system. Just put a hose between the outlet and inlet where it goes into the oil filter housing. Make a loop and run the oil right back in. Then plug the fittings on the oil cooler.

I rarely run this machine for more than two or three hours, and then dont run it hard. An engine that small doesn't seem like it would need to have the oil cooled.

If this is not an acceptable idea, wonder how I could test for a leak? I know it is leaking, just where is the question, and could I repair it on the machine.

I think some models had the oil cooler so it could be removed, but I dont think I can get the oil cooler out without taking the whole radiator off.

Thanks, Gene

wd9garymn · May 25, 2016

My D2 had the oil cooler taken out when I got it. No problems for 20 years, but I don't work it too hard.

dpendzic · May 25, 2016

Cat over designed the cooling on these old Cats--so its perfectly OK to eliminate the oil cooler as many many owners including myself have done---you can loop it or plug at the filter base and removing the bypass spring/check valve--most guys just loop.

jm. · May 26, 2016

Dad sent one in years ago for a $ 3600.00 engine overhaul and it has the oil cooler bypassed just like you mentioned . If I get time will send you a photo. ran for years like that.

GeneMO · May 26, 2016

I posted this on tractor talk and got the same, general opinions that it was OK to loop a hose and eliminate it.

Sure makes me feel better as I need the little cat right now and dont have time to tear into that mess.

Thanks all, Gene

Old D-2 Cat oil cooler question

GeneMO

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wd9garymn

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dpendzic

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jm.

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GeneMO

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