RAM 2500 Truck 2WD L6-5.9L DSL Turbo VIN 7 (2001)
Pilot Bearing: Description and Operation
DESCRIPTION
Vehicles equipped with a manual transmission utilize a pilot bearing. This bearing is located in the back of the engine crankshaft. Depending on the
type of engine or application, the pilot bearing can be a solid soft metallic bushing or a fully caged needle bearing. The pilot bearing's main functions
are to support the transmission input shaft, maintain proper alignment of the clutch assembly and allow the transmission main shaft to rotate at a
different speed than the engine mounted crankshaft.
OPERATION
The pilot bearing supports the transmission input shaft, maintains proper clutch assembly alignment and allows the transmission input shaft to rotate at
a different speed (RPM) than the engine mounted crankshaft.
When the clutch pedal is depressed (with vehicle in drive mode) the clutch disc slows and stops therefore, the transmission input shaft slows and stops
as well. The pilot bearing allows the engine crankshaft to continue to rotate even though the transmission input shaft is stationary.
