TRNW-2: 10R80 teflons

[John Parmeter]

Yes you are on point
However I see this like u prior to teardown remove vb
Prop up my phone record the air check ( regulaterd 60 psi)
Air checks nice solid not great but good teardown unit reassemble
And f and c clutch nope they loose there sealing ability
I have yet to figure out the ACTUAL  cause
So just watch this.     This has caused many good builders ( me included)
Grief and pepcids.   These units aren’t difficult theres just a learned ( taste)
To them

From: trnw2-bounces at trnw.net <trnw2-bounces at trnw.net> on behalf of pat schulte via trnw2 <trnw2 at trnw.net>
Date: Thursday, October 30, 2025 at 4:53 PM
To: Richard Wardell <dick.wardell at gmail.com>, Technical Discussion Forum <trnw2 at trnw.net>
Subject: Re: TRNW-2: 10R80 teflons
I have done it both ways, original rings and replacing them all. I am currently on the bandwagon of airchecking them when I pull the VB before I disassemble. While I am airchecking the packs, I am finding many times they will aircheck dead tight. If so I leave the rings alone, otherwise I change all of them. I have found on airchecking the new rings, if you get them wet and then hit them with full shop air pressure they will many times leak a little but holding the air to them they will all of the sudden pop and seal tight

On Thu, Oct 30, 2025 at 1:36 PM Richard Wardell via trnw2 <trnw2 at trnw.net<mailto:trnw2 at trnw.net>> wrote:
Good day.  I have done several of these units and only changed the 1 ring that pops out when the sleeve moves in the CDF drum.  This trans drove out really weird during the diag. test drive and data collection.  It air checked really bad during teardown, which is nothing new.  The ring that pops off all the time was still in place but a little funny looking.  Got together on the bench and it won't air up at ALL!  I know the drum is tight because I made a tool for that.  So, I get to looking and it seems that ALL the rings have shrunk about .010".  I've got a dealer 002 kit coming in the night box so we'll see in the morning if it's true.  Has anyone experienced this yet?

Thanks


--
Richard Wardell
owner Quality Transmission of Bartow county
1640 JFH PKWY Cartersville Ga 30121
770-315-2544

In a world full of self centered shallow people, think for yourself, be kind and generous.  You will take nothing with you and your children will waste what you leave behind!
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--
Pat Schulte
AAMCO Transmissions
Temecula, Ca.
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