TM 5-4320-302-14 4-30. COOLING AIR BLOWER AND COOLING AIR DUCTING This task covers: a. Removal b. Installation/Replacement c. Inspection d. System Test INITIAL SETUP Tools Shop    equipment,    automotive    maintenance    and repair, common no.  1 NSN 4910-00-754-0654 Tool kit, general mechanics automotive NSN 5180-00-177-7033 Materials/Parts Cooling air blower Cooling air ducting References Para 4-15 Electrical System Assembly Para 4-16 Control  Panel  Cover  Assembly, Control Panel Assembly, Instruments, and Switches Troubleshooting References (Table 4-2) Malfunction 3, step 1 Malfunction 5, step 1 Malfunction 7, step 2 Equipment Condition Para Condition Description Engine shut down and cool. 4-15 Wire from thermoswitch to control panel removed from thermoswitch on cylinder head. 4-20 Muffler guard and muffler guard mounting brackets removed from engine. 4-25 Lifting bracket removed from engine. 4-26 V-belt guard removed. 4-27 V-belts removed. 4-38 Alternator removed (with clamping plate attached). Special Environmental Conditions WARNING Carbon monoxide is produced by the internal combustion  engine  of  this  pump.    Death  may  result  if personnel fail to observe safety precautions. Carbon    monoxide    is    a    colorless,    odorless,    deadly poisonous gas which, when breathed, deprives the body of   oxygen   and   causes   suffocation.      Exposure   to   air contaminated with carbon monoxide produces symptoms    of    headache,    dizziness,    loss    of    muscle control,   or   apparent   drowsiness.      Coma,   permanent brain    damage,    or    death    can    result    from    severe exposure. Carbon    monoxide    occurs    in    the    exhaust    fumes    of internal  combustion  engines  and  becomes  dangerously concentrated under conditions of inadequate ventilation. Observe  the  following  safety  precautions  whenever  the engine is running: Operate engine in a ventilated area only. Do   not   idle   the   engine   for   long   periods   without maintaining adequate ventilation. Be alert at all times for exhaust odors and exposure symptoms. Be  aware:  the  field  protective  mask  for  chemical biological   radiological   (CBR)   protection   will   not protect you from carbon monoxide poisoning. Expose   victims   to   fresh   air,   keep   warm,   and   do   not permit physical exercise.  For artificial respiration, refer to    FM21-11.        Seek    medical    attention.        Administer oxygen, if available. GOOD    VENTILATION    IS    THE    BEST    DEFENSE AGAINST EXHAUST POISONING. 4-142