I've got a JD410 backhoe about 1975 model.
I've had hydraulic problems but after adjusting pump got everything working good...until recently. Went to use the machine and all the hydraulics are extremely slow (backhoe and loader equally). Since I had raised the pump PSI last year to the book PSI of about 1600 psi it ran better than ever so I figured the filters and screen were dirty with the added pressure. Changed both filters and cleaned the screen but no change.
The pressure is holding at about 1800 PSI but when I engage the loader or backhoe hydraulics it falls to about 600 until I let off.
Any thoughts what is causing this?
Thanks,
Tom
I've had hydraulic problems but after adjusting pump got everything working good...until recently. Went to use the machine and all the hydraulics are extremely slow (backhoe and loader equally). Since I had raised the pump PSI last year to the book PSI of about 1600 psi it ran better than ever so I figured the filters and screen were dirty with the added pressure. Changed both filters and cleaned the screen but no change.
The pressure is holding at about 1800 PSI but when I engage the loader or backhoe hydraulics it falls to about 600 until I let off.
Any thoughts what is causing this?
Thanks,
Tom