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Joined: 30 Oct 2010
Posts: 1317

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PostPosted: Wed Dec 06, 2017 3:18 pm    Post subject: JD 310 SJ TC Backhoe HYD PROBLEM Reply to specific post Reply with quote

Neighbor's backhoe won't lift the boom unless another function is held in operating position after it reaches the end of it's travel, you can curl the bucket in or out but it doesn't have much digging force, but it to will enable you to raise the boom once curled in or out and held in that position, this machine is electronic controlled with what appears to be control modules bolted to each cylinder valve assembly connected to the solenoids which check out o.k., so where do we start from??
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Tx Jim
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Joined: 14 Feb 1999
Posts: 25738
Location: N Central Texas

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PostPosted: Thu Dec 07, 2017 3:21 am    Post subject: Re: JD 310 SJ TC Backhoe HYD PROBLEM Reply to specific post Reply with quote

Maybe someone can help you but I can't because my knowledge of JD industrial equipment is very limited. Tractordata shows your TLB has open-center hyd's with 42 gpm flow at 3625 psi. Have you changed hyd filter lately?
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