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Case Tractors Discussion Forum
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DC Hydraulic leak

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Jim Mitteer

01-08-2007 10:44:49




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Have a 52 DC with eagle hitch. Tractor was sitting a long time so I flushed all cases and put in new fluids.
I was using a high pressure washer to clean the accumulation of oil and crud off the back end when I noticed a small oozing of hydraulic oil coming from around the filter housing. The tractor was not running at the time but had been running for 15 minutes or so prior to this.
I pulled the filter housing off and it appeared the gasket was cracked. I installed a new gasket and put it back together. Filled it with fluid and started it up. I ran the ram up and down a few times to bleed out the system and oil started seeping out around the filter housing again. Even after I shut off the tractor, oil continued to seep out. Any suggestions??

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L.Lamp

01-08-2007 11:06:44




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 Re: DC Hydraulic leak in reply to Jim Mitteer, 01-08-2007 10:44:49  
You need some super good sealer on both sides of your gasket and the sealing surfaces must be oil free before applying the sealer. Use permatex Hi Tack. I started using it on my Corvairs to seal the rocker tubes. Works better than anything else! I use it to seal the filter housing and the pump gasket. Let it set for a couple of hours before putting the oil back in.



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Jim Mitteer

01-08-2007 11:13:51




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 Re: DC Hydraulic leak in reply to L.Lamp, 01-08-2007 11:06:44  
Is there supposed to be a vent on the reservoir? When I loosened the fill plug it seemed like there was some positive pressure there.



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Paul f

01-09-2007 05:36:35




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 Re: DC Hydraulic leak in reply to Jim Mitteer, 01-08-2007 11:13:51  
I had some seeps in mine also after I overhauled the pump and replaced the PTO clutches. I also wondered about venting as there didn't seem to be any. I finally drilled and taped a hole in the fill plug and put in a vent like the one used on differentials of trucks (military vehicles are another other hobby and I had a bunch lying around as they use alot of them)...Don't have any more leaks...may have been venting or may have been the fact that the gaskets finnaly swelled enough to seal...Any way for about a buck and few minutes I don't think installing a vent will hurt and may help

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