2. Before installing the crankshaft, check the oil seal contact surface very carefully for scratches and nicks that could damage the shoulder of the new oil seal and cause oil leaks. If the crankshaft is damaged, then the only alternative is a different or new crankshaft unless the mechanic shop offers a way to repair it.
3. The old stuffing box can be removed from the body with a hammer and punch, working from the back side. Do not forget to pay attention before removing how deep the stuffing box is installed in the housing; the new oil seal must be installed to the same depth. Be very careful not to scratch or otherwise damage the hole in the housing, otherwise oil leakage may occur.
4. Make sure the holder is clean, then apply a light coat of engine oil to the outer edge of the new oil seal. The gland should be pressed flat into the body bore, so the use of a hammer is undesirable. If a press is not available, clamp the body and gland between two smooth pieces of wood and press the gland into place between the jaws of a large vise. The wood blocks must be thick enough to distribute the force evenly around the entire circumference of the gland. Working slowly, making sure the gland fits flat into the housing bore.
5. Before putting the oil seal / holder on the crankshaft and tightening the bolts, the oil seal collars should be lubricated with multipurpose grease or clean engine oil. Install a new gasket - no sealant is required and make sure the drive pins are in place before installing the holder.
6. Gradually tighten the retainer nuts/screws until they are tight, tighten them to the torque specified in Table of sizes and adjustment data at the end of the Guide.