Case VC Engine rear seal

Upper half of the cork oil seal is held in a rear oil guard which is located in a groove in the rear face of the cylinder block. The lower half of the cork seal is retained in the oil pan rear filler block.
To renew the lower oil seal, remove oil pan and rear filler block. For upper seal renewal, rotate rear oil guard, which contains upper half of seal, out of its groove in cylinder block. To do this, press on one end of guard with a punch or screw driver and rotate crankshaft. The oil guard should turn with the crankshaft. When reinstalling, lubricate the surface of the crankshaft where cork seal rides and install oil guard in same manner as was removed. Do not soak the cork in oil prior to installing as it will swell and retard installation. Renewal procedure for lower half of cork seal is self-evident after removing the oil pan and rear filler block.

Hope this helps, Mike