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Now we will follow up on the rest of the overdrive extension housing prep work. The overdrive mainshaft ball bearing is located by a unique snap ring (7656 in the drawings), and this ring fits into a groove machined into the interior of the housing. The ring must be reduced slightly in diameter to fit into this groove. A pair of long-nosed pliers is used to grab the upturned ends of the ring, and place it into the intended location. A cut-out area in the lower part of the housing allows for this to occur. Once fitted into place, you rotate the ring until the upturned ends are located at the top of the groove.....they will be visible from outside the housing by looking into the rectangular opening above the groove.
Having placed the snap ring, we then install the overdrive lockout shaft seal into the side of the housing. I run a brass wire brush in and out of the opening to make sure this passage is clean. Then I smear a bit of the Permatex gasket maker around the open recess for the seal. Just press the seal into the recess, making sure it has seated fully. We want this to set about 24 hours to secure the seal tightly into place.