TRNW-2: 6R140 clutch clearances

[Steve Everett]

Thanks !
              that makes me feel better ,  I"m pretty close to those
numbers, if ya'll ever get a unit built by BD Diesel,  go ahead and order
factory pressure plates and snap rings,  their setup is quite different,
and requires getting creative unless you're using the same steels and
frictions they did,  which I believe were Alto's ?

   Steve

On Mon, Dec 8, 2025 at 1:35 PM Rondle David <rpmsdavidinc at outlook.com>
wrote:

> ATSG has revised clearance, I have written down "do NOT go by Ford specs"
> The specs are:
>    Forward and Direct .030-.045"
>    Intermediate              .040-.055
>    Overdrive                     .060-.080
>
>
> *Rondle David*
> RPM Transmission
> 524 Old Settlement Rd
> Travelers Rest SC 29690
> 864-553-9493
> www.rpmtransmissionupstate.com
>
> ------------------------------
> *From:* trnw2-bounces at trnw.net <trnw2-bounces at trnw.net> on behalf of
> Steve Everett via trnw2 <trnw2 at trnw.net>
> *Sent:* Monday, December 8, 2025 11:10 AM
> *To:* Technical Discussion Forum <trnw2 at trnw.net>
> *Subject:* TRNW-2: 6R140 clutch clearances
>
>   I'm in the process of building a 6R140 unit that was a BD Diesel unit,
> they use their own machined pressure plates in the forward drum, OD drum
> and intermediate drum, and were using some thinner steels to add more
> clutches,   I'm building it using GPZ clutches and original thickness
> Kolene steels,
>
>   I'm having an issue getting my clutch clearances right ,  according to
> some ATRA info I have the forward,direct and intermediate should have a max
> of .021 clutch clearance ?   which doesn't sound right to me ?   I've
> managed to stack up each with about .010 clearance per clutch , which in my
> mind is okay ?
>
>    I've built a couple of these before, but always using stock steels and
> clutches, and don't remember what clearance I had with those ?
>
>    Looking for opinions from those who've done some of these
>
>    Steve
>
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