AC 190 hydraulic issues

Remove the pump. Find someone who is capable of going thru it. Explain to them the problem is only on the lift section and not the power steering or Traction Booster pumps.

Back off the relief valve before you forget. Not a plugged screen or filter. Your power steering works fine so that ain't it.

okay will do

hey everyone. I am wondering about my 190 hydraulics again. my gauge from Napa reads only 1200 psi. I installed a relief valve that is supposed to be pre set at 2000 psi. however when the tractor is running 1400rpms If I engage the remotes it strains the engine. gauge still only reads 1200 psi. could the gauge not function properly if there is air or something in it? it is a 5k psi gauge. or is the hydraulic pump going out? the previous owner did redo the pump so I am guessing It is still good. thanks

You can't guess what the pressure is.  Like voltage, you need to measure it.  3k psi gauges are available almost everywhere.  Amzn is a good source.  I ordered a 5k psi gauge (for my D-17 hyd issue) from my local NAPA (I like to shop local whenever I can).  The fittings were the challenge.

thanks Dr allis. also the new relief valve is supposed to be pre set at 2000 psi. I assume I would still want to back the screw out and pressure test it then and add pressure little by little?

Thanks

hey all. I decided to bite the bullet and order a new relief valve from A&W tractor. which relief valve do I need to take and and put in the new one. is it the Relief valve on the back of the valve stack or front? thanks

thanks Dr Allis

hey everyone today I hooked up a three point tiller to my 190. I lifted it fine its a larger one 400-500lbs. It still won't lift a round bale. do you think the relief valve is maybe just out of adjustment? if it is how would I adjust it. I am assuming I would get a 3,000 psi gauge and put it on the remotes and them turn the screw in for more psi and out for less?

thanks

I think most on here have "their issues with AGCO".  However, at the end of the day and when all is said and done, I am so grateful they are still here and servicing 60 year old tractors.  Not all companies would do that.  Good luck and hope the repair goes well!

As with ANY relief valve rebuilding, I never change the adjustment screw from where it was unless pressure testing reveals otherwise. Ease a remote lever (with 3000 psi gauge plugged in) into engagement SLOWLY ( at 2,000 RPM) to see what you have and do NOT exceed 2200-2300 psi or you will explode the hydraulic pump.

I don't like their prices either, but how much screwing around does one want to do to try and duplicate the correct parts ???

There is at least ONE split back-up ring and you aren't going to kind that very easy. They are not  "cheap" quality Orings.

When I rebuilt the relief valves on my 180 I just used the ones out of my O-ring kit. That was about a year ago and it is still working great.

okay thanks