Mack TerraPro LEU 2010, Operator'S Handbook Manual

Page: 205 / 225

194 MAINTENANCE AND LUBRICATION
COOLING SYSTEM
The cooling system is a pressurized system. The coolant is circulated by a
centrifugal pump. It is a typical system in most respects, but there are a few
things to keep in mind when checking or working on the cooling system.
Note: There is an auxiliary radiator located behind the cab that includes electrically
operated fans. The fans may begin to run at any time without warning. Keep clear of
fans.
WARNING
Keep clear of fan when engine is running. Fan may start to rotate at high
speed without warning.
WARNING
Avoid injury when checking coolant in a hot engine. Wait for the engine to
cool prior to checking the level whenever possible.
Coolant Level Check
WARNING
Turn the cooling system pressure cap counterclockwise to the first stop but do
NOT depress. After the pressure has completely dissipated, press the cap
downward and continue turning to remove.
Your MACK model chassis has a pressurized surge tank located on the
left-hand side of the chassis, mounted on the air cleaner assembly support
bracket. Coolant should be visible in the sight glass (see arrow in illustration)
located on the side of the tank.