snymat68
Platinum Member
I think I have some air in the cylinder/line for my backhoe dipper stick. The dipper stick extend (cylinder retract) works fine. When pulling the dipper stick toward the tractor (cylinder extending) once the dipper stick is all the way back to the point where the welded stops should be hitting the boom, the dipper stick dangles freely like a pendulum for about 3 seconds until the (what I'm assuming is) air gets compressed. If I retract the dipper stick to the point where it can dangle freely, if I push it back and forth by hand, I get almost an inch of free movement of the cylinder rod in and out. Also, for those 3 seconds while the air is compressing, I can hear what sounds like bubbles going through the hydraulic line at that end of the cylinder.
I've cycled the hydraulics stop to stop about 20 times and zero change. There is no oil leaking out anywhere and all the fittings appear tight, so I don't think there is any air actively leaking in anywhere. Being that it's a new backhoe, I'm guessing it was just air in the line from the factory that I didn't notice at first.
My question is, how do I fix this if cycling the hydraulics doesn't work? Can you bleed tractor hydraulics like you bleed hydraulic brakes in a car? Since the pressure is higher, not sure if that would be safe or not? Suggestions?
Also, not sure if it's related, but the boom swing cylinder and/or circuit has started making a kind of squealing sound when actuating at anything less than full open on the valve. Not sure if this is normal or not. It was pretty quiet for the first 5 hrs of use, then started making the sound.
The bucket curl is about the only circuit that seems to be working properly. LOL.
I've cycled the hydraulics stop to stop about 20 times and zero change. There is no oil leaking out anywhere and all the fittings appear tight, so I don't think there is any air actively leaking in anywhere. Being that it's a new backhoe, I'm guessing it was just air in the line from the factory that I didn't notice at first.
My question is, how do I fix this if cycling the hydraulics doesn't work? Can you bleed tractor hydraulics like you bleed hydraulic brakes in a car? Since the pressure is higher, not sure if that would be safe or not? Suggestions?
Also, not sure if it's related, but the boom swing cylinder and/or circuit has started making a kind of squealing sound when actuating at anything less than full open on the valve. Not sure if this is normal or not. It was pretty quiet for the first 5 hrs of use, then started making the sound.
The bucket curl is about the only circuit that seems to be working properly. LOL.