Operation and maintenance manual

Clean the cooling system and flush the cooling
system before the recommended maintenance
interval if the following conditions exist:
• The engine overheats frequently.
• Foaming of the coolant is observed.
• The oil has entered the cooling system and the
coolant is contaminated.
• The fuel has entered the cooling system and the
coolant is contaminated.
Note: When the cooling system is cleaned, only
clean water is needed when the ELC is drained and
replaced.
Note: Inspect the water pump and the water
temperature regulator after the cooling system has
been drained. This inspection can be a good
opportunity to replace the water pump, the water
temperature regulator, and the hoses, if necessary.
NOTICE
When any servicing or repair of the engine cooling
system is performed, the procedure must be per-
formed with the engine on level ground. Level ground
will allow you to check accurately the coolant level.
This check will also help in avoiding the risk of intro-
ducing an air lock into the coolant system.
Drain
Pressurized System: Hot coolant can cause seri-
ous burns. To open the cooling system filler cap,
stop the engine and wait until the cooling system
components are cool. Loosen the cooling system
pressure cap slowly in order to relieve the
pressure.
1. Stop the engine and allow the engine to cool.
Loosen the cooling system filler cap slowly in
order to relieve any pressure. Remove the cooling
system filler cap.
Illustration 49 g02513896
Typical example
2. Remove the drain plug (1) on the engine. Also,
open the drain cock or remove the drain plug on
the radiator.
Allow the coolant to drain.
Illustration 50 g03732615
3. For radiators installed by the engine manufacturer,
remove the drain plug (2) from radiator (3) and
allow coolant to drain. After the system has been
flushed, install the drain plug to a torque of 6 N·m
(53 lb in).
92
SEBU8726-03
Maintenance Section
Coolant (ELC) - Change
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