Driveline System Balance Adjustment (Using EVA): Notes

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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.

Important: The runout of the propeller shaft to be balanced and the runout of the components that the propeller shaft mates to must be within tolerances before an attempt should be made to perform this procedure.

Tools Required

J 38792-A Electronic Vibration Analyzer 2
J 38792-20 20-Foot Timing Light Power Cord Extension
J 38792-25 Inductive Pickup Timing Light, or equivalent
J 38792-27 6-Foot EVA Power Cord Extension