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Message: <blockquote data-quote="jameslmarchetti70@gmail.c" data-source="post: 135091" data-attributes="member: 24475"><p>I had a similar problem on a Digger derrick truck some years ago. The pressure was there but the boom wouldn't lift.  Same situation just a different machine.   What was it?  A quick  disconnet. It broke internally and blocked the whole system.  Is it possible that there is a disconnect on that machine off one side?  Just an idea.   Is there a diverter valve for hydrauic attachments?  One last thing what actually drives the wheels?  Are there chains and if so are they loose and binding?  Not that familiar with that loader.  I know of a guy that sheered off the shaft on the pump once.  Not a fun job.    It sounds like a blockage but it could be another thing.    Food for thought.</p></blockquote><p></p>