JD 1050 Hydraulic Issue

[Relic repair]

Sounds like a hydralic pump, if suction filter is not clogged then my next move would be to hook up to the output of the pump. In other words isolate the pump by disconnecting the output line and insallnew line on it's place . A flowmeter hooked up then the pump can be tested for max pressure and flow and compared to specs. Another more economical way would be to put a 2,000psi gaige teed into the new line then next inline a adjustable shut off valve with a hose leadong from there to the oil fill port. With valve wide open start tractor increase throttle to 1700 to 1800 rpm . slowly start closing valve until it reaches max pressure as called for in book. Raise hose from oil fill port and observe flow. If it has dropped off to nothing then pump is bad. Next this gets a little messy but take an empty 5 gallon bucket and swing the hose over into the bucket and time it for 15 seconds. Then measure it the dp the math to convert your volume to gallons per minute and compate to specs. Done this several times and works like a charm. Been a tractor mechanic for 42 plus years and even though wanted it to be something simple and cheaper than a pump, with your symptoms it was usually the pump. One thought, does the power steering work and of it does try steering and raise the loader.

 

[Dave M7040]

Here is a long shot.

A guy with an old but heavy duty long splitter decided to add a new gas driven 2 stage pump and auto return valve to his existing cylinder and beam.

It would never work properly. I suggested he run the output of the pump into a bucket. That worked fine.

Then someone suggested he check the fittings showing up in his photos and surprise surprise, one was an orifice fitting. i.e. a fitting with a small hole inside to limit hydraulic flow rates and thus speed of the cylinder.

He shopped at TSC and you would not think they would be carrying orifice fittings.

If any fitting has been changed it would be worth checking.

Dave M7040

 

[medic0648]

I had an 850 for a while, same basic machine. If it has the power steering plumbed like a lot did it tends to mess with the loader and 3 point. Trace the hoses and if it has the power steering plumbed from the outlet of the loader instead of the on port try working the steering wheel and using the loader/3ph