3.
Start and run the engine at low idle. Increase the
engine rpm to high idle. Run the engine at high idle
for 1 minute in order to purge the air from the
cavities of the engine block. Stop the engine.
4.
Check the coolant level. Maintain the coolant level
within 13 mm (0.5 inch) below the bottom of the
pipe for filling. Maintain the coolant level in the
expansion bottle (if equipped) at the correct level.
5.
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, use a suitable pressurizing pump in
order to 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.
6.
Start the engine. Inspect the cooling system for
leaks and for correct operating temperature.
i05149389
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. Level ground
will allow you to check accurately the coolant level.
This checking will also help in avoiding the risk of in-
troducing 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 engine cooling system capacity. Do not fill
the coolant recovery tank above
“
COLD FULL
”
mark.
Illustration 32
g02590196
Filler cap
4.
Clean the 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.
SEBU9064
61
Maintenance Recommendations
Coolant Level - Check