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Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 25665
Experience:  Technican turned service manager with multiple lines of equipment and rental units.
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I have a Volvo bl60 backhoe and the main boom hydrolic

Customer Question

I have a Volvo bl60 backhoe and the main boom hydrolic piston works going out but won't pull back in to lift bucket arm. If arm is lifted manually with pressure released it goes in but will not hold and arm falls right back down. From what I saw in forums it could be the inner piston seal or the valve in the control unit. Where should I start
Submitted: 4 months ago.
Category: Construction and Road Equipment
Expert:  Curtis B. replied 4 months ago.

Start with testing the cylinder. extend the cylinder , then remove the hose on the extend side, then try to retract, if oil comes out the open cylinder port, the inner seal is bad and cylinder needs repair.

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