Patent ID: 7270007

Claim:
A method of reducing vibration in a motor vehicle, comprising: removing a flywheel subassembly from the motor vehicle; spin balancing the flywheel assembly on a balancing machine; removing a driveshaft subassembly from the motor vehicle; spin balancing the driveshaft assembly on a balancing machine; removing a clutch plate subassembly from the motor vehicle; spin balancing the clutch plate assembly on a balancing machine; connecting the flywheel and the clutch plate subassemblies to form an interconnected flywheel and clutch plate assembly; balancing the flywheel and clutch plate assembly as an interconnected unit; reconnecting the flywheel subassembly, the flywheel and clutch plate assembly, and the driveshaft subassembly to the motor vehicle; measuring phase angles of a harmonic balancer, the driveshaft subassembly, and the flywheel subassembly of the motor vehicle; operating the motor vehicle to obtain a plurality of vibration measurements from a plurality of vibration sensors mounted to a bell housing subassembly, a transmission subassembly, and a rear differential subassembly; and rebalancing the driveshaft subassembly and flywheel subassembly using the phase angles of the driveshaft subassembly and flywheel subassembly.