TRNW-2: 10R80 CDF air check tool

[Ryan D]

They don't aircheck well for me either. I dont change the rings. I thought
I've seen on here that they don't aircheck very well. They've been working
like that so far.

On Tuesday, September 30, 2025, Phil Materi via trnw2 <trnw2 at trnw.net>
wrote:

> Interesting that you guys are having success reusing the original rings.
> I tried to reuse them unsuccessfully on the first 2 10R80s, that I did.
> Then I tried scarf cutting the originals on the next couple
> unsuccessfully.  We started replacing the rings with new rings, using old
> bearing races to expand them and the actual components to resize them which
> was time consuming but worked.  We bought the VMS tools which have been
> working very well, but still don’t air check well at times.  Hence why I am
> asking about the tool.  I’ll start air checking with the old rings again
> and see if maybe I was just unlucky with the first two.
>
> Thanks,
> Phil
>
> On Sep 30, 2025, at 3:44 AM, Fred Whitaker via trnw2 <trnw2 at trnw.net>
> wrote:
>
> 
>  As Pat said airchecking through the shaft and case works for me. A quick
> google of 10R80 airchecks shows the passages.
>  I only replace blown rings on these from the sleeve walking
> ------------------------------
> *From:* trnw2-bounces at trnw.net <trnw2-bounces at trnw.net> on behalf of
> Steve Everett via trnw2 <trnw2 at trnw.net>
> *Sent:* Tuesday, September 30, 2025 4:37 AM
> *To:* Phil Materi <materi99 at hotmail.com>; Technical Discussion Forum <
> trnw2 at trnw.net>
> *Subject:* Re: TRNW-2: 10R80 CDF air check tool
>
>
>       I have the sizers for the rings, but on occasion will leave the
> factory ones in place if its a low mileage unit with no burnt clutches,
> just did that yesterday on one with 90k miles,  clutches were like new,
> valvebody was the issue with the unit.   the sizers I have are made by VMS
> Concepts , they work great,
>
>    Steve
>
> On Tue, Sep 30, 2025 at 1:58 AM Phil Materi via trnw2 <trnw2 at trnw.net>
> wrote:
>
> I check them on the shaft as well as through the case and have found that
> they are air checking better since getting the 3D printed sizer set, but
> still get the odd one that I need to add fluid to get to air check well.  I
> like being able to air check the drum itself to at least eliminate anything
> within it as being the cause of the poor air check.  I’m sure that I am due
> for trusting that my slight cross leak air check is the rings, only to find
> out it is a cut seal or cracked piston.  Just added insurance I guess.
>
> Phil
> Sent from my iPad
>
> On Sep 29, 2025, at 4:44 PM, pat schulte <zzyzxpat at gmail.com> wrote:
>
> 
> Why not just check them through the shaft? Maybe I don't understand. I
> know some may find differently but I am starting to find they aircheck dead
> tight leaving the original rings in place. I am in the process of testing
> now. I check them on the shaft when building and then through the case when
> finished.
>
> On Mon, Sep 29, 2025 at 3:29 PM Phil Materi via trnw2 <trnw2 at trnw.net>
> wrote:
>
> Good afternoon everyone.  I am wondering if anyone like Richard Wardell is
> making an aircheck tool for the 10R80, like his 6L80 tool that I've had for
> years?  I think I saw a video with Richard or someone else using said 10R80
> tool and I keep forgetting to ask if he is making them?  Thanks for any
> help.
>
> Phil Materi
> A&B Transmissions
> Langley, B.C.
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>
>
> --
> Pat Schulte
> AAMCO Transmissions
> Temecula, Ca.
>
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>

-- 
Ryan
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