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you are correct I should have said 2way 2position spool

431 hyd problem- HELP
Massey Ferguson Tractors
Replies 4 Post by razalas_89

Massey 431 problem with remote setup<br>
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My tractor did not have remotes when I had a mechanic install remotes using after mkt kit. It worked ok but the spindle was constantly leaking.<br>
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A second mechanic suggested another spindle and that is when my problems started.<br>
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The original setup the spindle was installed on a square surface next to the right foot on the transmission housing. A simple lever directed fluid to the remotes. The lever isolated the 3 pt system from the remotes.<br>
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Now I have blown one hyd cylinder rebuilt it and blew it out again. After applying a slight pressure to the spindle it seems to run away. In other words it seems like an over pressure.<br>
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When installing the new rebuild I used small inputs to adjust for length and pin installation. No problems<br>
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When connected and a load was needed to lift one input and it blew a seal on the cylinder.<br>
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I have not connected gauges for pressure readings but I don't thing this is the problem.<br>
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Can you point me in the right direction?<br>
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Could it be a failed relief valve?<br>
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Could it be that when the lift arms were raised and I powered the cylinder I got the over pressure?<br>
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Do the systems remotes and 3 pt need to be run independently?<br>
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Does anybody know where I can go and see an illustration of the hydraulic system on the 431?<br>
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I'm not going to trust another mechanic until I understand the problem. It is just at my age I find it easier to let someone else do it.<br>
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Where I live we don't have Massey dealers and transporting it is over a hundred miles<br>
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Thanks- your thinking on this would be appreciated

431 hyd problem- HELP
Massey Ferguson Tractors
Replies 2 Post by razalas_89