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Message: <blockquote data-quote="mikelv" data-source="post: 134215" data-attributes="member: 23792">yep, I missed that part too. In that case I would suspect the hose that runs from the main valve body to the aux hydraulics valve has broken down internally. Causing a spiral V shaped flap on the inside which is acting like shut off valve and is blocking the flow or that hose is pinched off somewhere. But I would get a set of guages and start testing.I have never taken one apart before, but I have seen it done in you tube videos <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink    ;)" loading="lazy" data-shortname=";)" />[MEDIA=youtube]8pb-rU-tmIc[/MEDIA]Yours will probably look different. That being said if it is crud causing the problem its probably best to remove and clean the entire valve assembly spools and all.But if you are getting good flow out of the aux hoses and its still dying I think the problem is further upstream. You could remove the line in on the aux valve assembly and see if it dies with it not connected (run it into a bucket or something) but be prepared for oil everywhere.</blockquote>