Drain
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.
Stop the engine and allow the engine to cool.
Loosen the cooling system filler cap slowly to
relieve any pressure. Remove the cooling system
filler cap.
Illustration 31
g06427688
2.
Typical example
Open the drain cock or remove the drain plug (1)
on the engine. Open the drain cock or remove the
drain plug on the radiator.
Allow the coolant to drain into a suitable container.
NOTICE
Dispose of used engine coolant or recycle. Various
methods have been proposed to reclaim used cool-
ant for reuse in engine cooling systems. The full distil-
lation procedure is the only method acceptable by
Perkins to reclaim the coolant.
For information regarding the disposal and the
recycling of used coolant, consult your Perkins dealer
or your Perkins distributor.
Flush
NOTICE
Cleaning agents for an industrial cooling system must
not be used. These cleaning agents are very aggres-
sive and cause damage to the cooling system
components.
1.
Flush the cooling system with clean water to
remove any debris.
2.
Close the drain cock or install the drain plug in the
engine. Close the drain cock or install the drain
plug on the radiator.
NOTICE
Do not fill the cooling system faster than 5 L
(1.3 US gal) per minute to avoid air locks.
Cooling system air locks may result in engine
damage.
3.
Fill the cooling system with clean water. Install the
cooling system filler cap.
4.
Start and run the engine until the temperature
reaches 49 to 66 °C (120 to 150 °F).
5.
Stop the engine and allow the engine to cool.
Loosen the cooling system filler cap slowly to
relieve any pressure. Remove the cooling system
filler cap. Open the drain cock or remove the drain
plug on the engine. Open the drain cock or remove
the drain plug on the radiator. Allow the water to
drain. Flush the cooling system with clean water.
6.
Close the drain cock or install the drain plug on the
engine. Close the drain cock or install the drain
plug on the radiator.
Fill
NOTICE
Do not fill the cooling system faster than 5 L
(1.3 US gal) per minute to avoid air locks.
Cooling system air locks may result in engine
damage.
1.
Fill the cooling system with Extended Life Coolant
(ELC). Refer to the Operation and Maintenance
Manual, “Fluid Recommendations” topic
(Maintenance Section) for more information on
cooling system specifications. Do not install the
cooling system filler cap.
2.
Start and run the engine. The engine rpm will
increase to the operating speed of the engine. Run
the engine at operating speed for 1 minute to
purge the air from the cavities of the engine block.
Stop the engine.
3.
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.
56
M0105633-01
