Isuzu 4HE-1 & 4HK-1 Crankshaft Front Seal Installer
Isuzu 4HE-1 & 4HK-1 Front Seal & Slinger Installer
The new, improved style crankshaft rear main seal rides on a slinger that is installed onto the crankshaft. Since the seal now rides on the slinger it eliminates the problem of seal wear against the crankshaft. The new seal lasts longer but does require the use this Isuzu installation tool.
Previous seal designs required the seal to ride directly on the crankshaft. This was an easy seal to install but did eventually wear a groove in the shaft. At this point a new seal would would not seal correctly, requiring some type of repair to correct the problem. The new seal & slinger combination does away with the leakage problems associated with the older seal design.
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