Hi Stuiart, See below from Bernard le mécano Québec Canada archives:
MCV and Hydraulics:
Hi Joe, on the 454, the oil pump feeds the steering in priority, then the remote, hitch, PTO and brake. The flow-divider valve gives 3 GPM to the steering and 9 GPM to the hitch system. When the valve is stuck in the bottom, you have no steering, no PTO and if stuck in top, you have no hitch, no remote. Remove the plug and the spring, put a container under the hole, start the engine and pull the remote lever. The flow-divider valve goes out in the container. Sand the valve with a 400 sand-paper and try again. Change the filter if it's old. May be you have dirt on the oil, check in the filter housing when you open it. When the filter is full of dirt, it have a by-pass valve that open and allow the oil to go direct to the pump via a screen. In this case, dirt can go in the system and cause your problem.
To blow out the flow-divider valve, you have to pull the remote lever at the same time. Maybe it's stuck bad. Then with a concrete anchor, you can pull it, you place the anchor in the valve, screw on the bolt and pull out the valve. Hope this help you. Hope this help you. Bernard le mécano Québec Canada
Hi, the relief valve is located under the MCV, it have 2 plug, the thin one is the relief valve. The large is the priority valve that allow 3 gpm to the steering and 9 to the hitch and remote, for a 574. Have you check for the high pressure test, check on remote and loader coupler. About +- 2500 psi at 1500 rpm, if not may be the trouble is the pump. Bernard le mécano Québec Canada
Item #13 in this the flow-divider valve: http://partstore.caseih.com/us/parts-search.html#epc::mr65455ar9813
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