TM 10-3930-669-20 (8) Remove three grommets (20) and grommet   (21)   from   fuel   pipe   assembly (17). (9) Remove two nuts (22), lock washers (23), screws  (24),  and  clamps  (25)  from  fuel pipe assembly (17). Discard lock washers. (10) Remove  rubber  seal  (26)  from  fuel  pipe assembly (17). b. Cleaning/Inspection. WARNING Dry-cleaning  solvent  (P-D-680)  is  TOXIC  and  flammable.    Wear  protective  goggles  and  gloves; use only in a well-ventilated area; avoid contact with skin, eyes, and clothes; and do not breathe vapors.  Keep away from heat or flame.  Never smoke when using solvent; the flashpoint for type I dry-cleaning solvent is 100°F (38°C) and for type II is 138°F (50°C).  Failure to do so may result in injury or death to personnel. If  personnel  become  dizzy  while  using  cleaning  solvent,  immediately  get  fresh  air  and  medical help.    If  solvent  contacts  skin  or  clothes,  flush  with  cold  water.    If  solvent  contacts  eyes, immediately flush eyes with water and get immediate medical attention. Compressed  air  used  for  cleaning  purposes  will  not  exceed  30  psi  (207  kPa).    Use  only  with effective chip guarding and personal protective equipment (goggles/shield, gloves, etc.). (1) Clean all fittings and lines (exterior) with clean cloth moistened with dry-cleaning solvent. (2) Introduce 25 to 30 psi (172 - 206 kpa) of dry air into lines to clear any foreign matter. (3) Inspect lines for cracks, chafing, and defective connectors.  Replace if defective. (4) Inspect fittings for cracks and thread distortions.  Replace if defective. 4-13

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