Go Bottom431 hyd problem- HELP
 | razalas_89
Join Date: Jun 2016 Posts: 4 alvin, texas 
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2016-06-27 195396
Massey 431 problem with remote setup
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.
A second mechanic suggested another spindle and that is when my problems started.
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.
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.
When installing the new rebuild I used small inputs to adjust for length and pin installation. No problems
When connected and a load was needed to lift one input and it blew a seal on the cylinder.
I have not connected gauges for pressure readings but I don't thing this is the problem.
Can you point me in the right direction?
Could it be a failed relief valve?
Could it be that when the lift arms were raised and I powered the cylinder I got the over pressure?
Do the systems remotes and 3 pt need to be run independently?
Does anybody know where I can go and see an illustration of the hydraulic system on the 431?
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.
Where I live we don't have Massey dealers and transporting it is over a hundred miles
Thanks- your thinking on this would be appreciated
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| arcwelder
Join Date: Mar 2014 Posts: 111 Florida
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2016-06-27 195399
it sounds like the add on is bypassing the relief valve somewhere.
that would account for the over pressure.
without a relief valve you can blow the pump or worse strip the gears that drive it. ....
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