1997ThunderbirdLXV6
Seasoned PostWhore
Watched another transmission video, just for the fun of it, and saw something disturbing...
Start watching at 4:15, the lowering of the pan. What you'll see is that the filter is loose in the pan, including its o-ring, and that the toy is present, suggesting that this is the factory filter.
That got my obsessive side wound up, and I went to the junkyard where 4r70w transmissions tend to just lay around. I wanted to verify conflicting information online whether or not the pan should hold the filter in place.
After measuring a few times, accounting for the gasket and pan depth, I concluded that there's between 3/16 and 4/16" between pan floor and filter. The filter o-ring is 1/4" wide. So conceivably, yes, the filter could sit somewhat loosely in its bore; it wouldn't be able to move away much, but some fluid could be sucked in through the bore, bypassing the filter (or air if the fluid level is low).
Start watching at 4:15, the lowering of the pan. What you'll see is that the filter is loose in the pan, including its o-ring, and that the toy is present, suggesting that this is the factory filter.
That got my obsessive side wound up, and I went to the junkyard where 4r70w transmissions tend to just lay around. I wanted to verify conflicting information online whether or not the pan should hold the filter in place.
After measuring a few times, accounting for the gasket and pan depth, I concluded that there's between 3/16 and 4/16" between pan floor and filter. The filter o-ring is 1/4" wide. So conceivably, yes, the filter could sit somewhat loosely in its bore; it wouldn't be able to move away much, but some fluid could be sucked in through the bore, bypassing the filter (or air if the fluid level is low).
