The Balance Spindle assemblies to be overhauled are required for overhaul on F-22, F-15, and B-2 Power Take Off (PTO) shafts. Each PTO shaft assembly must be dynamically balanced to tight tolerances t... The Balance Spindle assemblies to be overhauled are required for overhaul on F-22, F-15, and B-2 Power Take Off (PTO) shafts. Each PTO shaft assembly must be dynamically balanced to tight tolerances to prevent the generation or amplification of torsional vibration.

The Balance Spindle assemblies to be overhauled are required for overhaul on F-22, F-15, and B-2 Power Take Off (PTO) shafts. Each PTO shaft assembly must be dynamically balanced to tight tolerances t... The Balance Spindle assemblies to be overhauled are required for overhaul on F-22, F-15, and B-2 Power Take Off (PTO) shafts. Each PTO shaft assembly must be dynamically balanced to tight tolerances to prevent the generation or amplification of torsional vibration.