TM 10-3930-659-34 4-53.  ACCUMULATOR MAINTENANCE (Con’t). 7. guide  (18),  spring  (19),  valve  (20),  washer  (21), and  preformed  packing  (22)  from  gas  end  cap (16).  Discard preformed packing. 8. Remove snapring (27) and oil cap (26) from accumulator barrel (23). 9. Remove preformed packing (24) and backup ring (25) from oil cap (26).  Discard preformed packing. 4-197