Hey again,

I've gone thru the input shaft, installed clutches, plates, and snap rings. With the shaft pointing up, I've pressured checked the Overrun Clutch Passage, Foward Clutch Passage, and 3-4 Clutch Passage.

The Foward and 3-4 pressure check good.

The Overrun clutch leaks into the Foward Clutch Passage, so that if I cover the Foward Clutch Passage, then there is a good seal.

Something tells me that this should not be! But the overrun is only applied when the foward is applied, so it should not matter.

Is this correct?

Thanks!

 

Thats correct. Its all good. The clutches use a lip seal, and the overrun clutch piston nests in the foward clutch piston, so when the overrun clutch is applied, it bleeds off into the foward clutch circuit. However, since the overrun clutches will never be applied withouth the foward clutches, this is no big deal. So to air check the overrun clutch circuit, you will need to block off the foward clutch feed hole.

 

Thanks! I read a little further in the service manual and found the pressure test verbage.