Place drain pan beneath drain tap on right
side of radiator.
· If vehicle has been operating, use extreme
care to avoid being burned when
removing radiator cap or coolant reservoir
cap. Sudden release of pressure can cause
a steam flash which could seriously injure
personnel. Use heavy rags to protect
hands. Slowly loosen cap to the first stop
and allow pressure to be relieved before
removing cap completely. After use,
securely tighten cap. Failure to comply
may result in injury or death to personnel.
· Coolant may damage the skin. Wear
protective equipment and avoid skin
contact when handling coolant.
Open drain tap at bottom of radiator.
Remove pressure cap from coolant reservoir.
Close radiator drain tap after all coolant has been drained.
The only coolant authorized for use in the IHMEE is Ethylene Glycol. To avoid possible internal
damage to the engine cooling system, use only Ethylene Glycol. Water may only be used in an
emergency. If water is used, the cooling system must be drained, flushed, and refilled with Ethylene
Glycol at the first opportunity. Failure to comply may result in damage to equipment.
Ethylene Glycol is not supplied ready to use, and must be mixed prior to filling the cooling system.
Refer to TB 750-651.
Open petcock on aftercooler housing.
Place cab interior heater to HEAT setting.
Add proper mixture of coolant through coolant
reservoir up to bottom level of sight glass.
Close petcock when all air has been released from