5.
Start the engine. Inspect the cooling system for
leaks and for the correct operating temperature.
i05197396
Coolant Extender (ELC) - Add
In order for Perkins ELC to achieve 12000 hours an
extender must be added at 6000 hours. For a
suitable extender, contact your Perkins dealer or
Perkins distributor.
i03842450
Coolant
Level
-
Check
Check the coolant level when the engine is stopped
and cool.
Illustration 40
g00285520
Cooling system filler cap
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.
Remove the cooling system filler cap slowly in
order to relieve pressure.
2.
Maintain the coolant level within 13 mm (0.5 inch)
of the bottom of the filler pipe. If the engine is
equipped with a sight glass, maintain the coolant
level to the proper level in the sight glass.
Illustration 41
g00103639
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.
i06223869
Coolant Temperature
Regulator - Replace
Replace the water temperature regulator before the
water temperature regulator fails. Replacing the
water temperature regulator reduces the chances for
unscheduled downtime.
A water temperature regulator that fails in a partially
opened position can cause overheating or
overcooling of the engine.
A water temperature regulator that fails in the open
position will cause the engine operating temperature
to be too low during partial load operation. Low
engine operating temperatures during partial loads
could cause an excessive carbon buildup inside the
cylinders. This excessive carbon buildup could result
in an accelerated wear of the piston rings and wear of
the cylinder liner.
A water temperature regulator that fails in the closed
position can cause excessive overheating. Excessive
overheating could result in cracking of the cylinder
head or piston seizure problems.
SEBU9074-01
71