Posted by pete 23 on July 30, 2009 at 20:09:54 from (173.87.13.168):
In Reply to: Re: 656 hydro question posted by theponyroper on July 30, 2009 at 14:14:16:
Usually the high pressure relief valve is problem rather than check valve, however , I had a couple where check valve was the culprit. One, ahem, the customer had installed the charge filter in backwards and it wore a nice little hole in the end of the filter and that piece lodged in the check valve, other one, check valve seat was all hammered out of shape so it leaked. The check valve seats under high pressure, fwd and rev each have one and when in fwd that check valve is seated and charge pump flow into center section low pressure side is through the rev check valve and vise versa when in reverse.
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