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 67 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.
i03634651
Crankshaft Vibration Damper -
Inspect
Viscous Damper
The viscous damper has a inertia weight that is
located inside a fluid filled case. The inertia weight
moves in the case in order to limit torsional vibration.
Visually inspect the crankshaft damper. Ensure that
the cooling fins (1) on the crankshaft damper are
clean and free from dirt.
Illustration 68 g01950241
Typical example
Inspect the damper and replace the damper for any of
the following reasons:
• The damper is dented, cracked, or leaking.
For information on removal of the crankshaft damper,
refer to Disassembly and Assembly, “Vibration
Damper and Pulley - Remove and Install”.
i05413412
Diesel Exhaust Fluid - Fill
Refer to the original equipment manufacture
information for the Diesel Exhaust Fluid (DEF) tank
capacity.
Illustration 69 g03379943
Lockable type DEF Filler cap
100 SEBU8732
Maintenance Recommendations
Crankshaft Vibration Damper - Inspect
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