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. This proce-
dure will allow you to check accurately the coolant
level. This procedure will also help in avoiding the risk
of introducing an air lock into the coolant system.
1.
Remove the cooling system filler cap slowly in
order to relieve pressure.
2.
Maintain the coolant level at the maximum mark
that is correct for your application. If the engine is
equipped with a sight glass, maintain the coolant
level to the correct level in the sight glass.
Illustration 59
g02590196
Typical filler cap gaskets
3.
Clean the cooling system filler cap and check the
condition of the filler cap gaskets. Replace the
cooling system filler cap if the filler cap gaskets are
damaged. Reinstall the cooling system filler cap.
4.
Inspect the cooling system for leaks.
Note:
The Diesel Exhaust Fluid (DEF) tank requires
coolant flow around the tank. The Coolant Diverter
Valve (CDV) will turn the flow on or off. If the coolant
system has been filled with the CDV in the closed
position, coolant level will drop because of the
opening of the CDV. The coolant flow will be diverted
when the ambient temperature is approximately
−5° C (23° F).
i07508019
DEF
Filler
Screen
-
Clean
NOTICE
Ensure that the engine is stopped before any servic-
ing or repair is performed.
Illustration 60
g03725939
Typical example
1.
Ensure that the area around cap on the Diesel
Exhaust Fluid (DEF) tank is clean. Remove cap
(1).
2.
Using a suitable tool, press the tabs (2) in order to
release the tabs. With the tabs released remove
the filter screen (3) from DEF tank neck adapter
(4).
3.
The filter screen can be cleaned in clean water and
dried using compressed air. Refer to this
Operation and Maintenance Manual, “General
Hazard Information” for information on using
compressed air.
4.
If the filter screen cannot be cleaned or the filter
screen is damaged, then the filter screen must be
replaced.
SEBU9063-07
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