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4720 sprayer surging, any help lil hoss?
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ontario
Posted 6/11/2016 12:30 (#5348731 - in reply to #5347953)
Subject: RE: 4720 sprayer surging, any help lil hoss?


Ok so Deere tech just left and here's the update. Rpm stays same when it hesitates / surges. It doesn't surge in 1st gear. Only 2,3,4. We have 12v at all wheel solenoids, we checked continuity through all wheel solenoids and all were to the spec. There is no codes. Adjusted hydro handle linkage because it feels like it's on the border of being not letting us have full pressure. Still no success. They can't reach anyone at Deere on a Saturday for where to go next but they want it in the shop for possible pressure testing monday. They seem to think it can be a relief valve or something not letting it build full constant power.
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