784 IH hydraulic problems

Hey fellas I was looking for a bit of help here, with my 784 MFWD, its got an IH loader on it also. my hydraulics seem sluggish at an Idle and even 1000 rpm when I am maneuvering around the yard steering takes a lot of effort. we did a steering pressure test and it was 1600psi for the steering pressure relief valve which the service manual says is proper, also had pto problems when I put my snow blower on the tractor this winter, I can stall out the pto. I put a flow meter on the tractor and did a flow test at high idle I have 15gpm a little less once oil is up to temperature, but at idle theres only about 5-7gpm (not sure what it should be because manual doesn't say) tested the IPTO pressures and they were a bit low so we shimmed up the valve to get it into spec. The main hydraulic relief valve is set and working about 2450psi (book says 2500 psi)
I'm fairly competent with hydraulics but was just checking to see if anyone has had any issues like this before, It may be that my pump is getting week but flow doesn't fall off like they usually do on a week pump.
Thank you in advance for your help
 
We had a 684 that had similar issues. It ended up being parking brake material blocking the hydraulic pick up. Took the top off and cleaned it out and has worked fine since.
 
Keep it simple. Filter first. Then on the bottom of the MCV there is a plug which is the flow control valve. Take it out and then wind some emery cloth on a dowl rod. Using a drill smooth up the bore in there. clean up and install valve. This is what dealer said to do on our 674. Took care of the problem. If these don't work then it is time for more drastic measures. Also recheck oil level.
 
Hi Chris, my thought is same as TWL, parking brake crud clogging pickup tube.
Are you the only owner of this 784 and does the parking brake work?

From the archives, Bernard le mécano mentions cleaning the suction strainer.

See below:

Hi, your suction strainer is plugged. It's on the suction line, on rear end of the pipe. Drain the oil, put a 3/4 allen tool on big plug and remove it, the strainer is inside the elbow, unscrew it and clean with solvent. Clean the dirt out of the elbow.

I am not sure where this suction strainer is for the hydraulic pump. I know where it is for the lube pump.

JimB
 

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