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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Case 850D oil cooling problem

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03-12-2004 05:45:22

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The transmission oil on my 850D(turbo)gets up into the red after about 3 hours of running.It will cool down some if the engine idles in neutral for a while.Is there an after market oil cooler or another way to cool the oil?

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03-13-2004 03:10:10

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 Re: Case 850D oil cooling problem in reply to jh, 03-12-2004 05:45:22  
Dont know if an 850 is the same but an 1150 has a line that tee's into the cooler in line and tee's into the cooler out line right under the torque converter and it has a one way check valve in the line, the 1150 had the same symptoms as yours and the check valve was hung open letting alot of oil by-pass the cooler.

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John Mann

03-12-2004 17:18:05

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 Re: Case 850D oil cooling problem in reply to jh, 03-12-2004 05:45:22  
I have an 850 D and had this problem also, from the front of the radiator it looked to be clean. So I removed the engine covers and the front radiator guard and noticed it wasn't really so clean. I power washed it for about 2 hours and now on a hot day it never gets over 1/3 of the guage.

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03-12-2004 17:06:03

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 Re: Case 850D oil cooling problem in reply to jh, 03-12-2004 05:45:22  
I had an 850B that started doing the same thing, looked all over and finaly found problem to be a pinched oil line. tree limb has snaked through the bottom belly pan along one side and pushed the line up just enough to restrict it. Just a thought.

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03-12-2004 14:50:09

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 Re: Case 850D oil cooling problem in reply to jh, 03-12-2004 05:45:22  
You might check the oil cooler thermostat and between cooler and radiator for trash

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Doug Ont

03-12-2004 12:20:46

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 Re: Case 850D oil cooling problem in reply to jh, 03-12-2004 05:45:22  
Try changing the filter...

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