PREVENTIVE MAINTENANCE ENGINE COOLING SYSTEM
Regional Haul
(R05/10) Y53-6033 – 177 –
ELC Extender
Add ELC extender if necessary at the maintenance inter-
val under “Cooling” on page 180.
Topping Off
WARNING! Removing the fill cap on a hot
engine can cause scalding coolant to spray
out and burn you badly. If the engine has been
in operation within the previous 30 minutes,
be very careful in removing the fill cap. Pro-
tect face, hands, and arms against escaping
fluid and steam by covering the cap with a
large, thick rag. Do not try to remove it until
the surge tank cools down if you see any
steam or coolant escaping. In any situation,
remove the cap very slowly and carefully. Be
ready to back off if any steam or coolant
begins to escape.
NOTE: If frequent topping off is necessary and
there are no visible signs of coolant leaks when
the engine is cold, check for leaks with the engine
operating at normal temperature.
WARNING! Handle coolant and antifreeze
carefully. Ethylene glycol antifreeze is poison-
ous and can cause death or personal injury.
Store in original fluid container only and
always keep out of reach of children.
Cooling System Expansion Tank
FILL
COOLANT
EXPANSION
TANK
