Perkins 5006A-E23TA Operation And Maintenance Manual page 66

66
Maintenance Section
Cooling System Coolant - Change
NOTICE
Dispose of all fluids according to local regulations
and mandates. When you recycle used engine cool-
ant for reuse in engine cooling systems, the full distil-
lation procedure is the only method acceptable by
Perkins Engines Company LTD to reclaim the
coolant.
For information regarding the disposal and the
recycling of used coolant, consult your Perkins
distributor.
Flush
1. Flush the cooling system with clean water to
remove any debris.
2. Close the drain cock or install the drain plug (3) on
the radiator. Close the drain cock or install the
drain plug (4) in the cylinder block. Close the drain
cocks or install the drain plug (5) in the oil cooler.
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.
Install the cooling system filler cap (1)
4. Install power to the engine. Start the engine.
Operate the engine until the temperature reaches
49 °C to 66 °C (120 °F to 150 °F).
5. Stop the engine and allow the engine to cool.
Isolate the electrical supply to the engine. Loosen
the cooling system filler cap (1) slowly to relieve
any pressure. Remove the cooling system filler
cap. Open the drain cock or remove the drain plug
(3) on the radiator. Open the drain cock or remove
the drain plug (4) in the cylinder block. Open the
drain cock or remove the drain plug (5) in the oil
cooler. Allow the water to drain. Flush the cooling
system with clean water.
Fill
1. Close the drain cock or install the drain plug (3) on
the radiator. Close the drain cock or install the
drain plug (4) in the cylinder block. Close the drain
cock or install the drain plug (5) in the oil cooler.
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.
2. Fill the cooling system with coolant. Refer to the
Operation and Maintenance Manual, "Fluid
Recommendations" topic (Maintenance Section)
for more information on cooling system
specifications.
Note: Ensure that the filler cap is installed before
operating the engine.
3. Install power to the engine. Start the engine.
Operate the engine to purge the air from the
cavities of the engine block. Use the normal
shutdown procedure to stop the engine.
4. Isolate the electrical supply to the engine. Remove
the filler cap. Check that the coolant level is within
25 mm (1.0 inch) of the bottom of the filler pipe.
Illustration 57
5. Clean the cooling system filler cap (1) and inspect
the seal (2). If the seal is damaged, discard the old
filler cap and install a new filler cap. If the seal is
not damaged, use a suitable pressurizing pump to
pressure test the filler cap. The correct pressure is
stamped on the face of the filler cap. If the filler
cap does not retain the correct pressure, replace
the filler cap.
Install the cooling system filler cap.
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