1.7 Cooling system
General
WARNING
BURN HAZARD!
Heated coolant spray or steam can cause personal injury.
Do not remove the pressure cap from a hot engine. Wait until the
coolant temperature is below 50°C (120°F) before removing the
pressure cap.
NOTE
Never use a sealing additive to stop leaks in the coolant system. This
can result in coolant system plugging and inadequate coolant flow,
causing the engine to overheat.
The engine coolant level must be checked daily.
CAUTION
Do not add cold coolant to a hot engine. Engine castings can be
damaged. Allow the engine to cool below 50°C (120°F) before add‐
ing coolant.
On applications that use a coolant recovery system, examine to
make sure the coolant is at the appropriate level on the coolant
recovery tank for the engine temperature.
Many coolant recovery/expansion tanks, or are made of a semi-
clear material (not shown) to aid in checking the coolant level with‐
out removing the radiator cap.
NOTE
Some radiators have two fill necks, both of which must be filled when
the cooling system is drained.
On applications that do not use a coolant recovery system, the top
tank of the radiator is used to check and top off the coolant level.
Never remove the radiator cap when the cooling system is hot.
22
1 Engine – 1.7 Cooling system
TL2 Maintenance Manual
591 003 Default
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