[AT] 4020's coming back?

[Ken Knierim]

I'm with Jason on this one... if it works, don't fix it. My experience
on powershift transmissions nil though (closest approximation is that
I worked on some automotive automatics). But from the sound of things,
the manual does not recommend anything more than shimming up the
pressure, it's probably a slight amount of wear on the pump (or slight
restriction in the filter/inlet). Clean it up and put it back to work.
:)

Ken in AZ

On 10/23/06, Jason DeJoode <jdejoode at highstream.net> wrote:
> If it works, don't fix it.  Change filters, fluid, and fix any leaks and
> call it good.
>
> Jason
>
>
>
>
> ----- Original Message -----
> From: "Dave Ernst" <dadadidi at cccomm.net>
> To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
> Sent: Monday, October 23, 2006 6:42 PM
> Subject: Re: [AT] 4020's coming back?
>
>
> > http://albums.photo.epson.com/j/AlbumIndex?u=3009545&a=32335414
> >
> > Here are a few pictures that show what I'm up to. The block is currently
> > in the machine shop getting hot tanked and cam bushings installed. The
> > rods will have the wrist pins fitted there also.
> > Now, open for discussion.
> > The tractor has 14,000 hours on it.
> > I bought the I&T manual and followed the transmission test proceedures.
> > Step one was to determine transmission operating pressure with the
> > criteria being between 140-160 psi.
> > The pressure is 140 psi, and the book says it can be increased by adding
> > shims which I will do. There are several clutch and brake packs and any
> > particular gear activates different clutch and brake packs. The test is to
> > determine pressure loss in each clutch/brake pack(s) in each individual
> > gear. 15 psi is the maximum loss acceptable and then repair is
> > recommended. The worst case scenario in any gear sequence I found is 5
> > psi. Mostly 2-3 psi.
> > Given these circumstances and the usage I described previously, what would
> > you do?
> >
> > Dave in Nevada
> >
> > _______________________________________________
> > AT mailing list
> > Remembering Our Friend Cecil Monson 11-4-2005
> > http://www.antique-tractor.com/mailman/listinfo/at
> >
> >
>
>
> _______________________________________________
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> Remembering Our Friend Cecil Monson 11-4-2005
> http://www.antique-tractor.com/mailman/listinfo/at
>