[AT] Noise Concerns, John Deerre

[jtchall at nc.rr.com]

We had a quad range in the 4430, gave excellent service. The only drawback 
was the power assist park release, if you didn't know how to get it out of 
park you could break something. We had someone borrow ours once they managed 
to tear a reverse gear out of it, claimed it wasn't their fault. We assumed 
it was because they didn't know how to get it out of park. Don't think they 
asked before they borrowed it.

In the late '80s we were running a sort of prototype plow Deere was wanting 
to build to compete with the auto-reset 450 IH plows. The tractor they 
supplied was just a tad bigger than a 4020. It had a newer transmission, 
believe it was 15 forward gears with no ranges. Once you were moving forward 
you just kept pushing the lever to the next gear. Once you got past about 
6th or 7th, the front end had a tendency jump. In the higher gears I just 
opted to use the clutch.

John Hall


-----Original Message----- 
From: Ralph Goff
Sent: Sunday, April 05, 2015 9:47 PM
To: Antique tractor email discussion group
Subject: Re: [AT] Noise Concerns, John Deerre

On 4/5/2015 8:01 AM, charlie hill wrote:
> I Just don't remember what model JD it was.  I do know it was turbocharged
> and it had what I thought was a hydro transmission.  It was some sort of
> shift on the fly power shift between hi and low range.  It worked similar 
> to
> an AC Power Director but was much more complex and prone to problems.
> I don't remember any more about the transmission.  Could be it was a 
> regular
> gear box with only the power shift high and low range.  I liked it a lot
> because
> when you were doing tillage work you could pull it back into low to turn
> around
> and get the implement back in the ground.  Then when it was pulling again
> you could go into high.  However, they had a lot of problems with it and
> spent a
> lot of money on repairs to the transmission.  I don't know why exactly.
>
> Charlie
I think you are talking about the Quad range transmission Charlie. It
was introduced on the new generation
30 series in 1973 I believe. I've never heard anything bad about a John
Deere transmission. Their power shift
  was years ahead of the competition and stood up well. Those 4020
tractors now sell used for more than the
  new price over 40 years ago.

Ralph in Sask.

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