TRNW-2: 6R140 clutch clearances

Steve Everett severett61 at gmail.com
Mon Dec 8 08:10:44 PST 2025


  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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