How do I know if my hydraulic pump (basically a power steering pump) is putting out enough oil pressure. I bought a new one, and it does not appear to pump the oil either...do I need to do something to make it work? I can engage the pump, it turns, and nothing comes out the high pressure hose when it is elevated to a level above the reservoir tank. If lowered below the level of the tank, gravity allows oil to come out the hose.
JD 430 Baler Hyrdraulic Tie
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beenthere
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:welcome: to the forum.
A pressure gauge on the output side will give pressure. But sounds like supply to the pump is impeded, or the pump is failing. Sounds like it needs to be primed.
It appears the pump is self-contained and at $300, the new one should work. What powers the pump? Internal electric motor or is it belted to a power source?
A pressure gauge on the output side will give pressure. But sounds like supply to the pump is impeded, or the pump is failing. Sounds like it needs to be primed.
It appears the pump is self-contained and at $300, the new one should work. What powers the pump? Internal electric motor or is it belted to a power source?
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Tx Jim
New Member
Priming a newly installed pump is very difficult on a JD rd hay baler. BTDT several times. Did you open control valve(parts key #15) CCW all the way and have baler running at pto speed???????????? Did you blow air in pump reservoir as outlined in operators manual????
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Tx Jim
New Member
Pump is powered by a belt from a roll shaft in baler. Parts key #46(sheave) in your photo fits on a hex roller shaft.
The hydraulic pump is powered by a pressed on roller that has a belt attached. The belt turns and so does the pulley on the pump. Thus, the mechanisms to drive the pump are functioning. I just have no idea on how much should come out. The specs. say 1.8 gal per min, which seems like it should shoot out of the small diameter hose to me.
beenthere
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- JD_4x2_Gator, JD_4300, JD_425, JD_455 AWS, added JD_455, JD_110, JD_X485(sold)
Measure it. Time how long it takes to fill a cup (or half a cup) and figure out how close to 1.8 gal per min that you are.
Two seconds to fill a cup at the rate of 1.8 gal per min. if I calculate it right. In 1.8 gal there are about 29 cups.
Let us know how long it takes.
Two seconds to fill a cup at the rate of 1.8 gal per min. if I calculate it right. In 1.8 gal there are about 29 cups.
Let us know how long it takes.
Tx Jim
New Member
Jtd10a
Also be sure to open control valve "wide open" until you get twine arm cycling correctly.
Also be sure to open control valve "wide open" until you get twine arm cycling correctly.
rowdytexan
New member
I also have a JD 430 and had the same problem this year. While getting it ready for my summer harvest, I replaced the old power steering pump and hoses with a new power steering pump and hoses and experienced the same problem - the pump was not putting out enough oil pressure. I tried everything I could think of, including applying air pressure as stated in the operators manual while running the PTO at the correct speed and the control valve opened. It just didn't put out enough pressure. Even had a JD mechanic work on it and he confirmed my belief that I had been sold a defective pump. Unfortunately, I had bought that pump off a local vendor and he closed his business, so no other JD dealer would do a warranty claim for me and I couldn't see spending another $300. The way I got around it was to uninstall the hydraulic hoses that were attached to the hyd cylinder that raise the pickup and install them to the hyd cylinder that operates the twine arm. By doing so I manually operated the twine arm using the second remote control lever from the driver's seat. All I did was watch the number window on the baler and stop forward travel every time the number on the window had just reached the size I wanted my bales to be than I would use the hyd remote lever to swing the twine arm from its parked position towards the bale then reverse the lever and slowly return it back. It worked just fine wrapping the bales with twine and cutting the twine when it reached the park position and if I wanted more twine I just swung the twine arm back in and repeated the process. I did adjust the hyd remote to its lowest setting. This saved me $300. I bale around 700 to 1000 bales alfalfa, teff, and sudan grass average per year. Hope this helps.
