TM 10-3930-659-34 4-57.  STEERING VALVE REPAIR (Con’t). 7. Remove setscrew (17), preformed packing (16), check   ball   seat   (15),   preformed   packing   (14), check ball (13), and check ball retainer (12) from steering   valve   body   (3).      Discard   preformed packings. 4-215

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