ARMY TM 9-2815-257-24 AIR FORCE TO 38G1-128-2 MARINE CORPS TM 10155A/2815-24/3 5-21 5-10.  PISTON AND CONNECTING ROD MAINTENANCE  -  cont. B.    CLEANING.   Cleaning   solvents   are   flammable   and toxic  to  eye,  skin,  and  respiratory  tract.   Skin   and   eye   protections   are   required when  working  in  contact  with  cleaning solvents.    Avoid  repeated  or  prolonged contact.    Work  in  well  ventilated  area only.   Keep away from heat, sparks, and open  flame.    Do  not  smoke  while  using cleaning  solvent.  Failure to observe this warning  can  result  in  injury  or  death  to personnel. 1. Clean all components with cleaning solvent and a clean rag.  Allow to air dry. 2. Remove  carbon  deposits  from  ring  grooves  of piston (8, Figure 5-12) by scraping with discarded ring.  Rinse with cleaning solvent and allow to air dry. 3. Remove  carbon  deposits  from  top  of  piston  (8).   Use care to prevent scratching of surface. C.    INSPECTION. 1. Inspect piston (8, Figure 5-12) and connecting rod (9)  for  cracks,  deformation,  or  obvious  damage.   Inspect  for  uneven  or  excessive  wear.    Replace component if any damage is suspected. Figure 5-12.  Piston and Connecting Rod Removal WARNING