TM 10-3930-659-34 5-13. TRANSMISSION OUTPUT SHAFT ASSEMBLY REPLACEMENT (Con’t). NOTE Perform steps 18 and 19 only if pins are damaged. 18. Remove two screws (41), washers (42), and pins (44 and 45). 19. Remove two preformed packings (43 and 46) from pins (44 and 45).  Discard preformed packings. b. CLEANING AND INSPECTION WARNING Dry  cleaning  solvent,  P-D-680,  is  toxic  and  flammable.    Always  wear  protective goggles  and  gloves,  and  use  only  in  a  well-ventilated  area.    Avoid  contact  with skin, eyes, and clothes, and DO NOT breathe vapors.  DO NOT use near open flame or  excessive  heat.    The  solvent's  flash  point  Is  100°F-138°F  (380C-590C).    If  you become dizzy while using cleaning solvent, immediately get fresh air and medical help. If solvent contacts eyes, immediately wash your eyes and get medical aid. 1. Clean parts with dry cleaning solvent and dry with clean rags. 2. Clean and inspect bearings in accordance with TM 9-214. 3. Inspect metal parts for cracks and breaks.  Replace damaged parts. 4. Inspect output shaft splines for nicks and damage.  Replace nicked or damaged output shaft. TA708306 5-126