TM  10-3930-638-24&P 2-17.   COOLING   SYSTEM   MAINTENANCE   (cont) a. Radiator Servicing (cont). b.  Radiator cap c. Coolant recov- ery tank d. Cover plate e. Two lock washers  and cap  screws STEP LOCATION ITEM ACTION REMARKS SERVICING  (cont) 4 WARNING (cont) Wear safety glasses when drying parts with compressed air. Failure to do so could cause serious injury to eyes and possible blindness. If you hurt your eyes or if a foreign object is blown into your eyes, seek  medical  attention  immediately. b. Clean Use compressed air to clean exterior and to remove foreign matter obstructing passage of air through radiator c. Fill Use solution of 50 percent water and 50 percent ethylene glycol. Capacity is 16 quarts. Fill with coolant solution to two inches below level of radiator cap  opening a. Install Operate engine for 15 minutes. Check for coolant leaks at drain plug and drain cock; tighten if necessary b.  Remove  and Check  coolant  level,  add  if  necessary reinstall a. Remove cap Fill recovery tank half full with solution of 50 percent water and 50 percent ethylene glycol b. Install cap Position On  radiator  shroud Install and Until cover plate is securely mounted tighten 2-78