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6R140 2/3 and Reverse Engagement

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Keith Browning
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Keith Browning

Keith Browning

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Harsh 2/3 upshifts and hard engagement into reverse that usually goes away once the vehicle is at operating temperature. I have heard of several of these and I finally have one in my bay. No DTC's or debris in the pan.

 

Found the direct clutch balance piston scoring up the inside of the direct clutch piston causing them to bind.

 

 

FYI

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  • 8 months later...
fergy12

fergy12

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Had one similar with burnt up direct clutch scoring on balance piston and nicked up seals.  Fluid was burnt.  Only trouble i'm having now is getting the Forward and Direct clutches to air test properly.  If I used tonnes of Vaseline I can get a thud out of them for a few applications, other than that I just hear crossleaks.

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