Hi, I have a JD 1530 tractor that the hydraulics will quit after running for about 5 minutes or so. Before starting the tractor I pulled the top plug from the front hydraulic reservoir that sits above the front pump, it was completely full of oil. I drove the tractor running a rear PTO mower for 3-5 minutes then lost hyd pressure, making the PTO shut off, loader circuit not work, and power steering intermittent. At this point the front hyd tank was empty. If the tractor sits for a while (no set time I can figure out, 5 min or overnight) the front tank will fill back up, at which point I have good hyd flow again until the tank runs empty in about 5 minutes.
I've disconnected the loader SCV and capped the lines to eliminate a valve failure, same result. Looking in the rear filler hole with 3 pt up, I don't see any oil spraying. I can see the oil slowly circulating in the rear end, but no spraying, so I think this is normal.
I have read about steel lines inside the rear end that could be leaking, to check this do I need to remove the shifter cover from the top of the transmission and look for leaks? I'll have to order new gaskets I assume to do this, is it a good next step to take?
What else should I be checking that would cause the front reservoir to drain within a few minutes of running?
I found a related post at the link below, but didn't find a reply what the problem was.
http://www.yesterdaystractors.com/cgi-bin/viewit.cgi?bd=jd&th=489157
Thank you in advance for the help!
I've disconnected the loader SCV and capped the lines to eliminate a valve failure, same result. Looking in the rear filler hole with 3 pt up, I don't see any oil spraying. I can see the oil slowly circulating in the rear end, but no spraying, so I think this is normal.
I have read about steel lines inside the rear end that could be leaking, to check this do I need to remove the shifter cover from the top of the transmission and look for leaks? I'll have to order new gaskets I assume to do this, is it a good next step to take?
What else should I be checking that would cause the front reservoir to drain within a few minutes of running?
I found a related post at the link below, but didn't find a reply what the problem was.
http://www.yesterdaystractors.com/cgi-bin/viewit.cgi?bd=jd&th=489157
Thank you in advance for the help!