1978 8430 hydraulic oil cooler question

NY 986

Well-known Member
Is it possible to have any blockage in the cooler? Temps under 75 F no issue but above there is light seeping from line going to cooler. I've done everything from changing rubber line to triple clamping and the symptoms stay the same. Oil color is excellent and filters get changed per manual.
 
Not likely to be blocked internally..those hoses suffer over time,,may be a good thought to change them out now,,when the blow it makes a major mess,,filling the radiator with oil ...takes a lot to get them clean again,,plus that big fan will bring it on through and coat the engine...
 

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