TM 9-2320-209-20-3-1 c. Cleaning. 1. 2. 3. 4. 5. GO Fill engine cooling system with clean water to within two inches of overflow. Start engine. Refer to TM 9-2320-209-10. NOTE Put cardboard in front of radiator to raise engine temperature if needed, but do not let coolant boil. Run engine at 650 rpm to 700 rpm until engine temperature reaches 160°F to 180°F . Let it run for at least 10 minutes. WARNING Use rubber gloves when working with cleaning compound. Do not spill cleaning compound on skin, clothing or truck. Cleaning compound contains strong acid and will cause serious burns to personnel and NOTE Use two bags of oxalic acid and chloride. damage to equipment. two bottles of aluminum Slowly pour cleaning compound into radiator filler tube (1) . Put on radiator filler cap (2) and press down and turn it all the way to the right . TO FRAME 2 TA 083304 6-51