ARMY TM 9-2815-257-24 AIR FORCE TO 38G1-128-2 MARINE CORPS TM 10155A/2815-24/3 3-6 g.    If  anything  looks  wrong  and  you  cannot  fix  it,  write  it  on  your  DA  Form  2404.   IMMEDIATELY report it to your supervisor. h.    When you perform PMCS you will always need a rag (Item 8, App. E).  One rag is required, but more are recommended.  Following are checks that are common to the entire engine assembly: (1) Keep It Clean.  Dirt, grease, oil, and debris only get in the way and may cover up a serious problem.  Clean as you work and as needed.  Use dry cleaning solvent on all metal surfaces.   Use soap and water when you clean rubber or plastic material. (2) Rust and Corrosion.  Check engine assembly components for rust and corrosion.  If any bare metal or corrosion exists, clean, and apply a thin coat of oil (Item 6, App. E).  Report it to your supervisor. (3) Bolts,   Nuts,   and   Screws.      Check   them   for   obvious   looseness,   missing,   bent,   or  broken condition.  You cannot check them all with a tool, but look for chipped paint, bare metal, or rust around bolt heads.  If you find a bolt, nut, or screw that is loose, tighten it. (4) Welds.  Look for loose or chipped paint, rust, or gaps where parts are welded together.  If you find a bad weld, report it to your supervisor. (5) Electric Wires and Connectors.  Look for cracked, frayed, or broken insulation, bare wires, and loose  or  broken  connectors.    Tighten  loose  connectors.    Report  any  damaged  wires  to  your supervisor. (6) Hoses and Fluid Lines.  Look for wear, damage, and leaks, and make sure clamps and fittings are tight.  Wet spots show leaks, but a stain around a fitting or connector can also mean a leak.   If a leak comes from a loose fitting or connector, tighten it.  If something is broken or worn out, replace it. 3-9.  CLEANING AGENTS. 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.   WARNING