Re: Re: Re: 47 Cub hydraulics: Oil hot and very slow response

Posted by cd on February 09, 2002 at 20:28:16 from (4.23.226.73):

In Reply to: Re: Re: 47 Cub hydraulics: Oil hot and very slow response posted by David Jr. on February 09, 2002 at 14:18:27:

the 134 oil is just fine, here is your problem: oil builds heat when it is cavitated by the pump because so much pressure exists. the hyd. pump does not automatically bleed off pressure, your regulator/safety valve does. when you tore apart your system, dirt could have entered and jammed this up or it could be a burr. tear apart the safety valve and use emory cloth or scotch brite to clean the piston and cylinder wall inside of it. then clean the whole valve in a bucket of diesel or parts cleaner or thinner to remove all particles, put this all together and it may work, it may take a few tries to get out all of the dirt or burrs but i firmy believe this is your problem, also while your at it check your strainer. I bet when the tractor has been running for 5 or 10 minutes you cant touch the hyd pump without getting burnt and your hoses will begin to leak or seap. the sooner you get this fixed the better because it could possibly blow out the seal and dump all of your hyd. oil into the engine. good luck

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