Kubota BH77 not wanting to dig.

[xmv]

I've got an l3800 with a BH77 backhoe attachment. I was doing some work for a guy and using it pretty hard and blew a hose. My hose guy was closed, so I just quit for the day. He called and told me that he had gotten a hose made and installed it for me. I dont know if there was some trash in the line when he installed it, I broke something in a vale or what, but now the backhoe doesnt want to draw itself back to me. All the other functions seem to work fine. I can pull it a couple times and it will work, but it acts really weak. What could it be?

 

[Dave_eng]

I've got an l3800 with a BH77 backhoe attachment. I was doing some work for a guy and using it pretty hard and blew a hose. My hose guy was closed, so I just quit for the day. He called and told me that he had gotten a hose made and installed it for me. I dont know if there was some trash in the line when he installed it, I broke something in a vale or what, but now the backhoe doesnt want to draw itself back to me. All the other functions seem to work fine. I can pull it a couple times and it will work, but it acts really weak. What could it be?

Busted cylinder..............piston to push rod failure..............

Dave

 

[xmv]

I've got an l3800 with a BH77 backhoe attachment. I was doing some work for a guy and using it pretty hard and blew a hose. My hose guy was closed, so I just quit for the day. He called and told me that he had gotten a hose made and installed it for me. I dont know if there was some trash in the line when he installed it, I broke something in a vale or what, but now the backhoe doesnt want to draw itself back to me. All the other functions seem to work fine. I can pull it a couple times and it will work, but it acts really weak. What could it be?

Mechanic determined that it is a relief valve. Any one know what the part numbers are for the relief valves and where to order them?

 

[whitetiger]

Here's the parts schematic for a BH77.
Parts can be obtained from any Kubota dealer or from
Coleman Equipment
Internet Parts
877-851-3647
parts@colemanequip.com

 

[xmv]

Here's the parts schematic for a BH77.
Parts can be obtained from any Kubota dealer or from
Coleman Equipment
Internet Parts
877-851-3647
parts@colemanequip.com

Thank you. Are the relief valves interchangeable?

 

[whitetiger]

Thank you. Are the relief valves interchangeable?

Yes, if it shows the same part number for each relief valve. The two relief valves on each section are interchangeable. A quick test is to swap the upper and lower valve, then see if the failure follows the relief valve.