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John Deere Tractors Discussion Forum
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Daily Powershift Operation - Newbie

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Jon(IN)

03-18-2005 10:01:25




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I just purchased a 65 4020D Powershift and have a few questions about how to properly use the powershift. I have always used a clutch/manual shift tractor and am not quite sure how to use the powershift. Do you use the clutch/inching pedal just like a clutch? When I am in 4th gear and want to stop, do I pull it down through the gears, or push in the clutch and stop? As far as starting out, I read a post that said not to start out in 4th gear, to always start out in 1st and bump your way up through the gears. Is that correct.
Depressing the clutch will be a tough habit to break, but I don't think the powershift was meant to be driving like a hydrostatic either.

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fixerupper

03-18-2005 20:23:11




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 Re: Daily Powershift Operation - Newbie in reply to Jon(IN), 03-18-2005 10:01:25  
A Deere machanic once told me that using the inching pedal as a clutch causes more wear because all of the clutches in the powershift are released and slipping. If you put it into 'gear' without the inching pedal, only the clutch pack for that one gear slips during engagement.



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buickanddeere

03-19-2005 22:37:00




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 Re: Daily Powershift Operation - Newbie in reply to fixerupper, 03-18-2005 20:23:11  
Isn't the inching pedal a low tech dry clutch ahead of and outside of the trans case from all of the planetry hydraulic clutch packs? I could never convince my Uncle to use the PS on the 4050 when round baling. Instead of using the inching pedal as it it was a Perma-Clutch & all gear trans.



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twopop

03-18-2005 17:02:10




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 Re: Daily Powershift Operation - Newbie in reply to Jon(IN), 03-18-2005 10:01:25  
when starting out do not use the inching pedal,use the gear shift and shift thru the gears.if it jerks,have a qualified mechanic adjust the trans.when stopping go ahead and use the pedal,to relieve all the pressure and no jerking.it may last along time,not using it correctly,but it could cost over ten grand to have it fixed



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Jonboy

03-18-2005 16:50:48




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 Re: Daily Powershift Operation - Newbie in reply to Jon(IN), 03-18-2005 10:01:25  
Don't know about the deeres, but I'm guessing powershift is pretty much the same thing across all the brands. I drove an Allis Chalmers 8050 with 6spd powershift. Could drive it totally clutchless, and I did most of the time, others are right about it being jerky to downshift with, but it isn't too bad as long as you don't shift down too rapidly. also shifting is kinda rough if you shift at high rpms, shift it at lower rpms for smoother take offs. Whenever I wanted to stop I pulled the gearshift down through the gears down to neutral. The new ones have alot more gears and computers that allow the driver to throw the tractor right in reverse from high gear, and the tractor will downshift through all the gears first and then go into reverse, kinda nice feature. The old 8050 would allow you to do the same, but would throw you through the windshield if you tried that.
Play with it alittle bit and you'll soon learn the best ways to shift it.
hope this helps

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SwedeDeere

03-18-2005 12:14:29




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 Re: Daily Powershift Operation - Newbie in reply to Jon(IN), 03-18-2005 10:01:25  
You can try adjust the throttle when shifting, the same way you do in a car. With some training you can jump a couple of gears, if the tractor is not heavy loaded. Different powershifts may change gears in different ways, try yours out. A another way to change gears is to go through each gear, only using each gear a couple of second. After a while you don�t need the inching pedal. I have learnt this in a still very nice running -66 4020 PS, with 5300 hours. Very solid tractor!

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JD Jerry

03-18-2005 11:44:34




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 Re: Daily Powershift Operation - Newbie in reply to Jon(IN), 03-18-2005 10:01:25  
I put mine in 4th or 5th and go. I use the inching pedal to stop and most of the time taking off. The only time I bump gears one at a time is from 5th to 8th. Been using it like that for years and no trouble. Mine gets used daily as it has a loader on it and I feed cows with it.



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Mike Larson

03-18-2005 10:35:22




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 Re: Daily Powershift Operation - Newbie in reply to Jon(IN), 03-18-2005 10:01:25  
If you want to drive your tractor without jerking you around in your seat, drive your tractor like you would drive one without powershift. I always use my clutch to ease off with a smoother start with my 4440. You can use the same method in shifting down by pulling the throttle down and clutching to save you from jerking you forward. I have drove my 1982 4440 like this since it was new with no problems. When you have had 2 back surgeries like myself, you are very conscious of being jerked around. The newer powershifts have more gears so there is not so much difference in ground speeds.

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Mike w J

03-18-2005 13:00:35




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 Re: Daily Powershift Operation - Newbie in reply to Mike Larson, 03-18-2005 10:35:22  
you can shift as many gears as you want at a time and at any RPM but if you depress the inching pedel about a 1/4 of the way down until the trans preasure gauge drops it will shift smooth without jerks we have one with 15000 hour on the trans. and it has been on a loader for 10000 and and never been apart.



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