TM 10-3930-669-34 15-6.  PIVOT CYLINDER REPAIR (CONT). 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. (1) Clean all components and flush cylinder barrel using dry-cleaning solvent only.  Do not use cleaning cloth as any foreign material would contaminate hydraulic system. (2) Inspect barrel bore for any scratches or corrosion.  Replace barrel if rusted.  Replace barrel  and  piston  if  either component is scratched. (3) Inspect rod for bending.  Replace if necessary. (4) Inspect rod for scratches or pitting.  Remove minor scratches and pitting by using stone and lubrication oil. (5) Inspect component threads for burrs and stripped threads.  Replace or repair as necessary. c. Installation. NOTE Coat   all   internal   components   with hydraulic oil before assembly. (1) Install  rod  packing  (22)  and  rod  wiper  (21)  in head (5). (2) Install  seal  (20)  and  backup  seal  (19)  on  head (5). (3) Install backup seal (8) and seal (7) on head (5). 15-42