Re: 300u Hydraulic worries...

Posted by JayWalt on January 30, 2007 at 12:54:14 from (70.226.20.153):

In Reply to: 300u Hydraulic worries... posted by JayWalt on January 30, 2007 at 11:03:31:

I did some checking on caseIH, and the block between the res and the vavle is a pressure safety regulator. Does this regulate pressure to just the vavle attatched to it or to both vavles? The block below the valve is a check valve. The parts seem to be basically oring based, but there is some mention of bushings and pistons/seats. I Know how both the regulator and the check valve operate, and dont think these are the culprit. I'm not sure how the valve sends a pressure signal, well moreso what exactly this signal does to initiate a flow. I would have thought it would just control mechanically where the oil is going whether it be to the cylinder or the resevoir. Am I safe to assume that replacing aged cracked orings should remedy any pressure signal leakage? Are these valves difficult to work on. The parts diagram should be enough to help me with re-assembly. Is there anything special I need to know. It would be IDEAL to know what size orings I'd need ahead of time, but It's doubtful there is any real info on this, so I'll probly have to match them up after disassembly, which makes for a longer process. Replaceing the "needles" and seat are probly not gonna happen.
Thanks Jim for any fuirther info you can give me!!

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