[Spam Probability:26%] Re: [AT] 4020's coming back?

[H. L. Staples]

The front end has had lots of hard use judging from the photos.  The
hydraulic pressures sound real good but that probably doesn't tell how badly
the clutch and brake packs are worn. 
 
If it were mine I think I would leave well enough alone as far as the
transmission is concerned. It is amazing how well these old power shift
units hang together. 
 
Get ER done 
 
H. L. 
 
 
On 10/23/2006 6:42:51 PM, Dave Ernst (dadadidi at cccomm.net) wrote: >
http://albums.photo.epson.com/j/AlbumIndex?u=3009545a=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 IT 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 > > >
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H. L. Staples
McLoud, Oklahoma
USA