Originally Posted by Hermes1
When you say "pay very close attention when doing the filters", what should one be looking for and or paying close attention to? Is there something unique or special? Just curious, I am quite a long way from having to do this, but would consider doing my own fluid change. Now you have me having second thoughts.
Changing the fluid and filters should not cause a trans to get screwed up, UNLESS one of the filters (usually, the main sump filter) is installed incorrectly. The main sump filter has a snout that plugs into a bore in the pump housing. There is a seal at this connection (which is pressed into the pump bore). If the old seal is OK (no cuts or nicks, and won't easily pop out) then leave it in and re-use it. If you replace the seal, the new seal MUST be installed into the pump bore, and tapped in flush against the casting all the way around (not cocked). Do NOT put the seal on the filter snout!! The other filter (the spin-on one) goes on like a conventional engine oil filter. Spin it in until the gasket contacts the case face, then turn it another 1/2 turn or so BY HAND until it's snug. Do NOT overtorque it, since the threaded snout on this filter is plastic and will crack if you crank it down too tight. The torque spec is 7 ft-lbs.