TM 10-3930-669-34 Engine   retains   extreme   heat   when   in   operation.   Allow   time   for   cooling   before   performing troubleshooting procedures. Failure to do so may result in injury to personnel. VISUAL INSPECTION (1) Remove oil pan (Para 3-8). (2) Inspect   oil   suction   tube,   tube   screen,   and connections. (a) If   oil   suction   tube   is   loose,   tighten connections (Para 3-12). (b) If  oil  suction  tube  screen  is  clogged, clean oil suction tube. (c) If oil suction tube is damaged, replace oil suction tube. (d) If  oil  suction  tube  is  secured,  clean, and not damaged, suction  tube is OK. 2-25