CTS-V V8-6.0L VIN U (2006)
Drive/Propeller Shaft: Description and Operation
Propeller Shaft Description and Operation (CTSV)
The propeller shaft is a tube with rubber couplings at both ends which do not require periodic maintenance, that transmit power from the transfer case
or transmission output shaft to the differential.
Propeller Shaft Description
A center bearing assembly is used to support the propeller shaft connection point, and help isolate the vehicle from vibration.
Propeller Shaft Phasing Description
The propeller shaft is designed and built with the yoke lugs, ears, in line with each other. This produces the smoothest running shaft possible. A
propeller shaft designed with built in yoke lugs in line is known as in-phase. An out of phase propeller shaft often causes vibration. The propeller shaft
generates vibration from speeding up and slowing down each time the rubber coupling goes around. The vibration is the same as a person snapping a
rope and watching the wave reaction flow to the end. An in-phase propeller shaft is similar to 2 persons snapping a rope at the same time and watching
the waves meet and cancel each other out. A total cancellation of vibration produces a smooth flow of power in the drive line. All splined shaft slip
yokes are keyed in order to ensure proper phasing.
Center Bearing Description
Center bearings support the driveline when using 2 or more propeller shafts. The center bearing is a ball bearing mounted in a rubber cushion that
attaches to a frame crossmember. The manufacturer prelubricates and seals the bearing. The cushion allows vertical motion at the driveline and helps
isolate the vehicle from vibration.
