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Transmission on Deere 8020 4WD after recall


 
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fdt860
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PostPosted: Sun Dec 03, 2017 7:25 pm    Post subject: Transmission on Deere 8020 4WD after recall Reply to specific post Reply with quote

I would like to know more details about the 8020.
Searching over the internet, the 8010 is described as having a 9 speeds spicer transmission with the shifting lever on the left.

It is said in Heritage Iron article that this transmission was replaced by a 8 speeds during the recall into 8020. I looked up JDparts PC906 and it looks to me that the transmission mounted in 8020s is a JD built transmission and not a spicer one. Things like the syncrhonizeres are done exactly like the other new generation tractor made in Waterloo at the time.

This has me really stumble. Why would JD have developped such a transmission themselves instead of installing a stronger Spicer trans?

If the one pictured under is not a JD, what model Spicer trans could it be and in what others vehicles was that transmission installed?

Thanks!



 
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jd adict
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PostPosted: Mon Dec 04, 2017 4:24 pm    Post subject: Re: Transmission on Deere 8020 4WD after recall Reply to specific post Reply with quote

if i recall they have a clark transmission in them.
it is not a jd transmission.
i would have to go out to the shed and have a look but there is a tag on them.
might be a clark drop box also.
will get some pix and get back to you.
got a spare one sitting in the shop corner.
 
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SVcummins
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PostPosted: Mon Dec 04, 2017 8:16 pm    Post subject: Re: Transmission on Deere 8020 4WD after recall Reply to specific post Reply with quote

You have an 8020
 
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fdt860
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PostPosted: Mon Dec 04, 2017 11:27 pm    Post subject: Re: Transmission on Deere 8020 4WD after recall Reply to specific post Reply with quote

CVPost-SVcummins wrote:
(quoted from post at 21:16:01 12/04/17) You have an 8020


I was wandering how badly of a shape an 8020 can be and still be rebuild-able to original:
Motor: Not an issue, easy to find.
Transmission: If it is a clarck and you have the number, it is possible to find one
Etc...


Deere may have copied the syncronyzer design from Clarck, and also the shifters fork shape, because they are quite similar to their design.
 
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Bob
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PostPosted: Tue Dec 05, 2017 6:03 am    Post subject: Re: Transmission on Deere 8020 4WD after recall Reply to specific post Reply with quote


IMHO, the sychnchros pictured and DEERE synchros are about as much alike as apples and pears, outside of using "paper" lined plates... there's only so many ways to design a synchro, based on what it has to do and the space it has to fit in.

No pins though the DEERE units to keep the components lines up like the ones in the photo.
 
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jd adict
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PostPosted: Wed Dec 06, 2017 5:30 am    Post subject: Re: Transmission on Deere 8020 4WD after recall Reply to specific post Reply with quote

Here is a pix of serial number 5 with original plow at international plowing match Ontario Canada
We believe this is the tractor and plow that was at the new Gen introduction in Texas
Waiting on varification
It is like driving a machine way ahead of its time

 
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Bob
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PostPosted: Wed Dec 06, 2017 7:36 am    Post subject: Re: Transmission on Deere 8020 4WD after recall Reply to specific post Reply with quote


I find it interesting that in their latest series of articulated 4WD's DEERE went back to a "gudgeon joint" in the hinge area, with the driveline passing through it just like in your 8020!

So, yes, the 8020 WAS way ahead of it's time!
 
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larryanderson
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PostPosted: Wed Dec 06, 2017 9:58 am    Post subject: Re: Transmission on Deere 8020 4WD after recall Reply to specific post Reply with quote

Larry Maasdam has an 8020 I think #57? all original[actually voted most original at Rantoul] I will look at it when I am there sometime.He had 2 but traded one for rare MM.
 
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