And, it does not seem to matter which one is lowered and which one is raised in this way. Replace plug with 3/8' BSP adaptor and connect hose fitted with 90 deg 9/16' JIC crimp fitting. Remove this plug & fit a single hydraulic hose with female coupling. Examples of this are tipper trailers & bucket loaders. When either of the controls are left half way down the qudrant or more, the other can be carried to the top with no problem. The most basic hydraulic take off is for single acting cylinders which feed and return through a single hydraulic hose. I am desperate to get this project finished. I have talked to a couple of retired mechanics and so far no help. We have pulled the cover back off several times, rechecked all measurements under the cover and the same results. And with such an extensive range of quality. I really believe something would break if this was done at more than an engine idle. When it comes to your Massey Ferguson machine, the genuine choice for parts and service is the only choice. Pump pumps fine but, when both the Draft and the Position controls are moved toward full up position, the pump overloads, goes to knocking, foaming the oil in the reservoir and will choke the engine down. We did all the settings for the linkage under the lift cover before reinstalling. Replaced the cam blocks, the cam block follower the pump pistons and o-rings where we went into the pump. I am doing some restoration on a late 60' or so MF 135.
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