4-66. COOLANT SYSTEM FLUID REPLACEMENT.
This task covers:
TM or Para
Tool kit, general mechanics: automotive
Right engine door
General Safety Instructions
If engine has previously been in operation, allow
time for cooling before performing procedure.
Do not drain coolant if water temperature gauge reads above 180°F (82°C). Contact with steam or
hot coolant will result in serious injury to personnel.
Wear goggles/safety glasses when flushing radiator. Alkali hased corrosion inhibitor is in coolant
system. Contact with skin can cause injury to personnel.
Place a suitable container with a 6 gallon (22.7 liters) capacity under radiator to catch spilling coolant.
(1) Open petcock (1) on radiator (2) and drain radiator.
(2) Remove plug (3) from water inlet (4) and drain remaining coolant.
(3) Close petcock (1) and install plug (3).