The main hydraulic tube broke in my 671 and, although the tractor wouldn"t move, the PTO shaft still turned when the engine was running.
Without oil pressure because of the broken tube, it was still the typical SOS condition where the PTO shaft always rotates - input shaft geared to front PTO shaft/clutchpak/rear PTO shaft and enough friction in the clutchpak to overcome any resistance by shaft bearings.
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Today's Featured Article - It Can't Be Done! - A Tractor Story - by Neil Campbell. I'll never forget the time back when I was a boy baling hay on our Farm in Big Rapid, Michigan. The most memorable event that took place was a trip up the steepest incline on the farm pulling an old New-Idea baler with a pony-motor for power and a haywagon. I had just talked my Dad into buying an old John Deere B with 6-speeds ahead and I was real proud of it, except it was a little smaller than the Case tractor that we normally
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