Rear seal and wear sleeve kit for Cummins 6BTAA5.9-C178

The rear seal and wear sleeve kit 3926126 serves to maintain the integrity of the engine lubrication system by preventing oil leaks at the rear of the crankshaft. The seal creates a barrier against oil loss, while the wear sleeve provides a consistent surface for the seal lip to contact, protecting the crankshaft surface from direct friction and potential damage.

This kit is designed for various Cummins engine models, including the 6BTAA5.9-C178, KTA38C-1050, QSM11-C335, QSM19-C700, and the YB7725XL. These engines are commonly found in industrial cranes and heavy machinery, such as Grove equipment. The components are manufactured to meet the specific fitment requirements for these engine series to ensure proper installation and sealing function.

In internal combustion engines, the rear crankshaft seal is positioned between the engine block and the transmission housing. Its function is to contain the pressurized oil within the crankcase. The wear sleeve is often utilized when the original sealing surface on the crankshaft has developed grooves or imperfections, allowing for a restored, smooth contact area that ensures the seal can perform its function effectively.