[AT] 4020's coming back?

[Jason DeJoode]

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
>
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