Remove the mainshaft bearing and the oil seal using the adjustable bearing remover set.

Install a new mainshaft bearing until it bottoms in the torque converter housing using the 15 x 135L driver handle and the 62 x 68 mm bearing driver attachment.

Install a new oil seal flush with the torque converter housing using the 15 x 135L driver handle and the 72 x 75 mm bearing driver attachment.

NOTE: Do not drive the seal into the torque converter housing until it bottoms out; it will block the fluid return passage and cause transmission damage.