TM 9-2320-387-10
Table 2-2. Preventive Maintenance Checks and Services (Cont'd).
Location
Crewmember
Not Fully Mission
Item
Item to
Interval
Procedure
Capable If:
No.
Check/
Service
DRIVER
8
Before
Cooling
WARNING
System
If engine has been recently
operated, do not remove
radiator cap to check coolant
level. Cooling system is under
pressure, and escaping steam
or coolant can cause burns.
CAUTION
Type 1, ethylene glycol
(green), and Type 2, propylene
glycol (purple), should never
be mixed due to their
difference in toxic properties.
Failure to comply may result
in damage to equipment.
Using antifreeze without
mixing it with water can
cause high operating
temperatures, blockage of
cooling system passages, and
damage to water pump seals.
NOTE
Type 1 antifreeze is an
ethylene glycol based coolant,
green in color. Type 1 can be
added to factory-filled pink
coolant. When it becomes
necessary to flush factory
coolant, Type 1, ethylene
glycol, will be used. When
mixing Type 1 antifreeze with
water, distilled water is
recommended. Tap water
should only be used in
emergency situations.
Check coolant level in coolant
tank. Level should be at or
above the FULL COLD line.
Add coolant if below the FULL
line.
2-33
