Question about John Deere 420,1020,2010,2020,2510,2520 Tractor Float

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All hidraulics funtions are dead, no hydraulic power in machine.

I have a John Deere Back Hoe 410E with Piston pumps AT180926. Ok the problem is the machine lost hydraulic power in all funtions rear back hoe and front shovel and the stabilizer cylinders work but too slow. We supoussed the main pump was broken but it didn t we dessambled it but nothing was wear or broken we reassembled but the problem still there, then we changed the oil and the filter for a new one sold by local John Deere dealer. Please give an advice to try to find the problem, how I can find the problem?

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First thing I would do is test the pump itself even if no wear is found you could have a GPM loss.
So you need to do a flow test on it to find otu how much the loss is and check it to the specs of that hydrolic pump first.

Posted on May 14, 2010

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Posted on Jan 02, 2017

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