IH 350DU HYD cyl stuck extended

brckss2 · Aug 30, 2010

Looking for a few ideas. I was picking up a 1400 lb Gannon box scraper yesterday with the 350, it lifted up all the way and blew a hyd line to the lift cyl (lowering side). Anyway the lift would not lower, just ------ out the bad hose. So now I have this giant box stuck 2'in the air. I disconnected the hyd lines, still stuck, would not bleed down. Disconnected the box, removed the cyl and the 3 pt dropped. The cyl seems to be locked up hard. Any thoughts?

mkirsch · Aug 30, 2010

Bent shaft.

Janicholson · Aug 30, 2010

there is an internal check valve that prevents the cylinder from dropping. My guess is that the cylinder will need to be disassembled to relieve pressure. Of course, Mkirsch is correct if you see it is bent. Jim

brckss2 · Aug 30, 2010

Still looks straight to me, hope it is. Is the check valve internal? I have an external one at one of the lines.

Janicholson · Aug 30, 2010

Usually in the line at the fitting. (from memory). Jim

brckss2 · Aug 30, 2010

I removed both fittings and still stuck. Would the stroke limiter lock it up? Seems like it may be a safety thing, loose hyd pressure and cyl locks maybe. I'll play with it a little tonight and post results.

IH 350DU HYD cyl stuck extended

brckss2

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mkirsch

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Janicholson

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brckss2

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Janicholson

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brckss2

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