The crankshaft rear main seal is an asbestos “ rope” seal. A slot is machined the bearing at the rear which bleeds off excess oil. An oil slinger is part of the crankshaft. It prevents excessive oil from going past this area. (Figure 2-21).
Immediately behind the slinger is a knurled surface which is positioned in a way to push oil away from the rope seal during engine rotation. The rope seal is at the rear of the sealing system.
