TM 10-3930-659-34 5-1. ENGINE BLOCK MAINTENANCE (Con’t). b. CLEANING AND INSPECTION WARNING Avoid contact with live steam.  Live steam can burn skin, cause blindness, and cause other serious injury. Be sure to wear protective apron, gloves, and safety goggles when using live steam. 1. Using  steam  cleaner,  clean   all   internal   passages,   external   holes,   and   recesses   of   engine   block   to   remove corrosion, scaling, and debris. WARNING Compressed air used for cleaning or drying purposes, or for clearing restrictions, should never exceed 30 psi  (207  kPa).    Wear  protective  clothing  (goggles/shield,  gloves,  etc.)  and  use  caution  to  avoid  injury  to personnel. 2. Turn engine block so deposits will run out.  Flush internal passages, external holes, and recesses with clean water and dry with compressed air. 5-3