Table 3-1. Unit Level Preventive Maintenance Checks and Services M915-M920
Item To Be
If vehicle has been operating, use ex-
treme care to avoid being burned when
removing cooling system radiator cap.
Use heavy rags or gloves to protect
hands. Turn radiator cap only one-half
turn counterclockwise and allow pres-
sure to be relieved before fully removing
Coolant level is correct when sight glass
is full (TM 9-2320-273-10).
Use MIL-A-46153 in temperatures above
0°F (18° C) and MlL-A-11755 in tempera-
tures below 0° F (-18° C).
a. Check coolant condition. Test coolant
to see if draining is necessary (TB
b. Check all hoses for looseness, splits,
wear, and cracks that would cause leaks.
c. Inspect hose clamps for wear and
draining is required.
b. Class Ill leakage
evident. Hoses are
loose or have splits
c. Hose clamps are
worn or unservice-
Change 4 3-10.5