Illustration 50
g01211161
Typical example
4.
Open the drain cocks or remove the drain plugs (3)
in the oil coolers.
Illustration 51
g02126488
Typical example
Note:
In some application, opening the air vent (4)
will assist the draining of the coolant.
5.
Remove the drain plugs (5) in the aftercoolers.
6.
Allow the coolant to drain.
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
1.
Flush the cooling system with clean water in order
to remove any debris.
2.
Close the drain cock or install the drain plug (2) in
the cylinder block. Close the drain cock or install
the drain plug on the radiator. Close the drain
cocks or install the drain plugs (3) in the oil
coolers. Install the drain plugs (5) in the
aftercoolers. Tighten the plugs securely.
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.
Loosen the air vent (4) in the aftercoolers. Fill the
cooling system until coolant free of air flows from
the vent . Tighten the air vent securely.
Install the cooling system filler cap (1).
4.
Start the engine. Operate 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 (1) slowly in
order to relieve any pressure. Remove the cooling
system filler cap. Open the drain cock or remove
the drain plug (2) in the cylinder block. Open the
drain cock or remove the drain plug on the
radiator. Open the drain cocks or remove the drain
plugs (3) in the oil coolers. Remove both the drain
plugs (5) in the aftercoolers. Allow the water to
drain. Flush the cooling system with clean water.
Fill
1.
Close the drain cock or install the drain plug (2) in
the cylinder block. Close the drain cock or install
the drain plug on the radiator. Close the drain
cocks or install the drain plugs (3) in the oil
coolers. Install the drain plugs (5) in the
aftercoolers.
62
SEBU8604-02
