RADIATOR ASSEMBLY SERVICE/TEST/REPAIR/REPLACE (CONT).
Shut engine off and drain cooling system.
If the water being drained is still dirty, the system must be flushed again until the water is clean.
Install a new coolant filter in accordance with paragraph 2-44.
Clean the cooling system (externally) as follows:
Live steam used for cleaning shall not exceed 100 psi (690 kPa). During steam cleaning
operations, adequate ventilation, natural or forced, should be provided. Do not direct live
steam against skin.
Steam clean outside of radiator.
Death or serious injury could occur if compressed air is directed against the skin. Do not
use compressed air for cleaning or drying unless the pressure is/has been reduced to 30
psi (2.11 kgcm2) or less. When working with compressed air always use chip guards, eye
protection, and other personal protective equipment.
Dry all parts with compressed air.
Refill the cooling system as follows:
Ensure all draincocks are closed and hoses properly connected.
Fill cooling system to bottom of fill neck in radiator fill tank with a fresh mixture of 50 percent ethylene glycol
antifreeze and 50 percent water.
Install pressure cap. Operate engine until it reaches a temperature of 180°F (80
C), and check for coolant
Wait until the temperature is below 120°F (50°C) before removing the coolant system
pressure cap. Failure to do so can cause personal injury from heated coolant spray.
Check coolant level and fill if necessary.