TM 5-2420-230-24-2
B3.9 and B5.9 Series Engines
Cooling System (008-018)
Section 8 - Cooling System - Group 08
Page 8-15
CAUTION
Do not add cold coolant to a hot engine. Engine cast-
ings can be damaged. Allow the engine to cool to below
50C [122F] before adding coolant.
NOTE: On applications that use a coolant recovery system,
check to make sure the coolant is at the appropriate level
on the coolant recovery tank, depending on engine
temperature.
Fill the cooling system with coolant to the bottom of the fill
neck in the radiator fill or expansion tank.
NOTE: Some radiators have two fill necks, both of which
must be filled when the cooling system is drained.
Drain (008-018-005)
WARNING
Avoid prolonged and repeated skin contact with used
antifreeze. Such prolonged, repeated contact can cause
skin disorders or other bodily injury. Keep out of reach
of children.
CAUTION
Protect the environment: Handling and disposing of
used antifreeze is subject to federal, state, and local
regulations. Use authorized waste disposal facilities,
including civic amenity sites and garages providing
authorized facilities for the receipt of used antifreeze.
If in doubt, contact your local authorities of the EPA for
guidance as to proper handling of used antifreeze.
WARNING
Do not remove the pressure cap from a hot engine. Wait
until the coolant temperature is below 50C [122F]
before removing the pressure cap. Heated coolant spray
or steam can cause personal injury.
L-1071