TM 10-3930-659-34 4-56.  STEERING CYLINDER REPAIR (Con’t). 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 metal parts with dry cleaning solvent and allow to air dry. 2. Inspect  parts  for  cracks,  breaks,  deformed  metal,  and  other  damage  that  would  impair  operation.    Replace damaged parts. 3. retaining  ring  groove  In  steering  cylinder  barrel  for  nicks  and  burrs.    Smooth  nicks  and  burrs  in  retaining  ring groove with an abrasive cloth. 4. Inspect lands on piston for burrs and nicks.  Smooth nicks and burrs on lands on piston with an abrasive cloth. c.           ASSEMBLY NOTE Soak all seals and preformed packings in clean lubricating oil prior to assembly. 1. Install new preformed packing (23) and elbow (24) on steering cylinder barrel (2). 2. If removed, install bushing (22) on steering cylinder barrel (2). 3. Install new filler ring (7) in retaining ring groove (6) in steering cylinder barrel (2). 4. If removed, install bushing (21) on piston rod (4). 5. If removed, install new lubrication fitting (20) on piston rod (4). 6. Apply a light coat of lubricating oil to nut (1) and slide nut on piston rod (4). 4-211