4.
Clean the cooling system filler cap. Inspect the
gasket that is on the cooling system filler cap. If
the gasket that is on the cooling system filler cap is
damaged, discard the old cooling system filler cap
and install a new cooling system filler cap. If the
gasket that is on the cooling system filler cap is not
damaged, pressure test the cooling system filler
cap. The correct pressure for the cooling system
filler cap is stamped on the face of the cooling
system filler cap. If the cooling system filler cap
does not retain the correct pressure, install a new
cooling system filler cap.
5.
Start the engine. Inspect the cooling system for
leaks and for proper operating temperature.
i04408743
Cooling
System
Coolant
Level
-
Check
Engines
With
a
Coolant
Recovery
Tank
Note:
The
cooling
system
may
not
have
been
provided
by
Perkins.
The
procedure
that
follows
is
for
typical
cooling
systems.
Refer
to
the
OEM
information
for
the
correct
procedures.
Check
the
coolant
level
when
the
engine
is
stopped
and
cool.
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 will al-
low you to accurately check the coolant level. This
will also help in avoiding the risk of introducing an air
lock into the coolant system.
1.
Observe the coolant level in the coolant recovery
tank. Maintain the coolant level to
“
COLD FULL
”
mark on the coolant recovery tank.
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.
2.
Loosen filler cap slowly in order to relieve any
pressure. Remove the filler cap.
3.
Pour the correct coolant mixture into the tank.
Refer to the Operation and Maintenance Manual,
“Refill Capacities and Recommendations” for
information on the correct mixture and type of
coolant. Refer to the Operation and Maintenance
Manual, “Refill Capacities and Recommendations”
for the cooling system capacity. Do not fill the
coolant recovery tank above
“
COLD FULL
”
mark.
Illustration 27
g02590196
Filler cap
4.
Clean filler cap and the receptacle. Reinstall the
filler cap and inspect the cooling system for leaks.
Note:
The coolant will expand as the coolant heats
up during normal engine operation. The additional
volume will be forced into the coolant recovery tank
during engine operation. When the engine is stopped
and cool, the coolant will return to the engine.
Engines Without a Coolant
Recovery Tank
Check the coolant level when the engine is stopped
and cool.
56
M0106585