Spending a little reading and getting schooled on the JD4020 tractors, history, early vs late, etc. Very common to see a 4020 on Craigslist around here.
I see the 4020 came with a synchro range tranny (to me that reads sync'd like a truck, changing gears via a clutch) and a power shift tranny that really uses no clutch? Nearest thing is an inching pedal to ease hooking up to implements?
I gather the synchro range is simple and reliable, easy to repair/service? Wet clutch? Going down hill with an implement or hay wagon being pulled, notorious for jumping out of gear?
I assume the power shift tranny is more complex and with it a more expensive fix/service vs the synchro range? Wet vs dry clutch is a non issue as the PS can start/stop without depressing a clutch? Are these tranny's bullet proof? Is the design of the PS tranny such that it is impossible to jump out of gear going down hill with loaded hay wagon or heavy towed implement in tow? With either tranny, are the brakes reliable, easy to service, effective at stopping the tractor? Are breaks necessary to slow to a stop with a PS tranny, do you get engine braking when downshifting?
Which version sold more, PS or Synchro Range tranny.
Just curious.
Thanks!
Bill
I see the 4020 came with a synchro range tranny (to me that reads sync'd like a truck, changing gears via a clutch) and a power shift tranny that really uses no clutch? Nearest thing is an inching pedal to ease hooking up to implements?
I gather the synchro range is simple and reliable, easy to repair/service? Wet clutch? Going down hill with an implement or hay wagon being pulled, notorious for jumping out of gear?
I assume the power shift tranny is more complex and with it a more expensive fix/service vs the synchro range? Wet vs dry clutch is a non issue as the PS can start/stop without depressing a clutch? Are these tranny's bullet proof? Is the design of the PS tranny such that it is impossible to jump out of gear going down hill with loaded hay wagon or heavy towed implement in tow? With either tranny, are the brakes reliable, easy to service, effective at stopping the tractor? Are breaks necessary to slow to a stop with a PS tranny, do you get engine braking when downshifting?
Which version sold more, PS or Synchro Range tranny.
Just curious.
Thanks!
Bill