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Find a model →Pit up to four models against each other. Engine, hydraulics, hitch, weight, warranty.
Open comparison →Written guides on choosing tractors, hydraulics, PTO, hitches, and maintenance.
Read articles →This is a real diagnostic job on a 9RX 640 with a fan stuck at full speed, not a walkaround: the tech checks fan speed sensor readings via the diagnostic menu, wiggle-tests wiring, and traces the fault to a pinched, broken pigtail terminal, showing the actual repair. It then shifts to shop odds-and-ends, including a ratchet/impact tool comparison and combine bearing maintenance, before wrapping with channel updates.
Hosted by a working John Deere technician sharing real repair jobs alongside personal tool opinions and shop life updates.