Driveline System Balance Adjustment (Using EVA): Notes
This procedure is designed to fine-tune the balance of a propeller shaft while it is mounted in the vehicle. Small amounts of residual imbalance which could be present in other related driveline system components could be compensated for as a result of performing this procedure. The end result of properly fine-tuning a propeller shaft balance may be either a significant reduction or an elimination of a vibration disturbance that is related to the first-order rotation of a propeller shaft.
Fine-tuning the balance of a propeller shaft can aid in achieving a more balanced total driveline system.
If J 38792-A Electronic Vibration Analyzer (EVA) 2 is available, use the following procedure, Adjustment Procedure Using EVA. If the EVA 2 is not available, use the second procedure, Adjustment Procedure Without EVA.