Hydraulic Woes...

I got all of my hydraulics back together and installed my freshly rebuilt remote valves. The valves worked almost a good as new! Quite proud of myself for pulling that one off.

The problem reared its head when I went to unload a Mott (Alamo) 88" Flail Mower from my trailer. I had to gap the throttle wide open to raise it over the side of the trailer. I figure the Mott mower weighs 1000-1200 lb. The loader has a 3000 lb lift rating @ 1800 psi. I know the system relief is 1650 psi. When I put the load to it, the diverter valve started by-passing (squealing). I have not investigated too deep but there is a set-screw on the diverter. Should I adjust this or look deeper (relief valve)?

Sorry for being long winded, it has been a long day and my mind is racing. I have not installed a gauge in-line to see what actual psi I am delivering to the remotes, but i know it seems weak. Also the power steering can be difficult at times too... May be related?

Thanks

Sometimes the angles that one has to grab at makes all the difference in the world as to "how heavy" something is, especially as viewed from the vantage point of the loader. Seems like the heaviest loads are always when something is coming off a trailer because you're reaching across to grab it.

Still and all and like you say, if there is a problem pulling it's own steering system, something is a bit amiss for sure.

TV and I go round and round on this all the time, but on a 40/50-year-old tractor, the first thing I suspect is the pump because it is the wear point. The "wide open throttle" thing is kinda indicative of this.

However, since you say it lifts fine and then "squeals" when it stops lifting, oil is by-passing somewhere and it just sounds to me as though you've either hit the capability of your loader or the hydraulic system is certainly bottoming out, whatever the cause, be it PR valve or the pump.

I'd be for looking at the steering problem first and worrying about the loader last. Betcha one will cure the other.

Just my opinion,

Allan

The steering works ok until you load the tractor up then it gets to a hit or miss, hard then easy. After rebuilding the remote valves, I can raise the loader at low idle. But it lacks balls with a load. I spoke to my father and he did say that years ago he suspected the hydraulic pump was failing and that is why he "retired" it to the round baler. Now I have it and trying to fix all this worn out do-do is taking longer and longer because I am finding more and more.

Whatca think, if the pump is original and the filters are good, and I put a gauge on it and get less than 1650 psi, bad pump??? Also I have heard that you can get a 1850 psi or 2050 psi relief from an industrial that will replace the 1650 psi relief. Anyone have a part number???

Thanks guys, I can be a PITA,
Charles