Rear Main Bearing Oil Seal

Rear main bearing oil seal can be installed without removing crankshaft. The procedure for seal leak correction is as follows:

1. Drain oil, remove oil pan and rear main bearing cap. Use packing tool (J-25286 ) against end of seal and drive old seal gently into groove until it is packed tight. This may vary from 1/4" to 3/4", depending on amount of pack required. Repeat on other end of seal.
2. Measure amount seal was driven up on one side; add 1/16" then cut this length from old seal removed from bearing cap. Repeat on other side, again adding 1/16" and cut from old seal. Place a drop of sealer on each end of seal and cap. Using 2 small screwdrivers, work both pieces (one on each side) into block seal groove.
3. Use packing tool to force the short pieces into block and cut seal flush with block. Place a piece of shim stock between seal and crankshaft to protect bearing surfaces before trimming.
4. Form a new rope seal in cap, packing it by hand. Use rear main seal installing tool (J-28693 ) and hammer seal into groove. Rotate tool before cutting off excessive packing. Reinstall cap.