41TE minivan transmission question

2002 minivan was starting to hunt for gear so i decided to change trans filter. First time in 140000 miles (we bought at 66k) but it still had rtv as gasket so think its oem filter.. anyway, the gasket said torque to 80 in/lb, then 120 in/lb in star pattern. Well i promptly stripped out a 10mm bolt blind thread, thank goodness it wasnt one that was a through hole into the case, and i wasnt even at 80. :oops: Trans shop told me its more like 25 in/lb, about finger tight with a 1/2 more turn. Whos right? I never even reached 80 on any as i felt where it was was more than adequate as the rubber gasket was already squeezing out. I understand fsm may may call out oem silicone rtv spec, not aftermarket rubber gasket spec.:wack:

Good news is no leaks and no more hunting, bad news is i spilled entire bucket of old ATF+4 onto concrete driveway when van came down off ramps :banghead:

I tighten the bolts until the gasket "just starts" to push out. I mean, watching real close, when the gasket barely starts to deform I stop. But you're in luck, simply tap the hole out to the next SAE size bolt since metric and SAE are kind of between each other when it comes to size. 10mm is .393" OD, a 7/16 X 20 SAE bolt is .437" OD, which requires a 25/64 tap drill. 25/64 equals .390". So if you drill the hole out to 25/64 it should cut almost nothing if there any threads left at all. But then you have plenty of material to tap the hole out to 7/16 X 20 . I've done this many times.... of course you can also use a heli-coil????


treblig