TM 5-1940-277-20
TM 1940-20/2
5.
Using box end wrench, open coolant drain plug at both keel coolers (4).
6.
Collect and dispose of coolant as directed.
REFILL:
1.
To refill cooling systems, close coolant drain points.
2.
Wrap three drain plug threads with Teflon tape and install three drain plugs.
3.
Refill cooling systems with coolant allowing an air space of approximately 1 inch at top of header
tank.
4.
Reinstall cooler filler cap.
5.
Close engine hatches.
3-150