The front cover has a single-piece lip-type seal that rides on the torsional damper at the front of the crankshaft (see Figure 3-12, view A). The cylinder case and crankshaft #5 main bearing cap together form a mounting surface for the rear crankshaft seal (see Figure 3-12, view B). Like the crankshaft front seal, the rear seal is of a single piece lip-type design.
During the service replacement procedure, the crankshaft front seal may be removed by using a slide hammer and hook-type adapter. The crankshaft rear seal may be removed by careful prying.
The front seal requires a special driving tool for its installation (see Figure 3-13, view A). The rear seal has a special pushing tool to be used during its installation that repositions the seal for a different contact with the crankshaft flange (see Figure 3-13, view B).