Perkins 1206E-E70TTA Operation And Maintenance Manual page 98

98
Maintenance Section
Cooling System Coolant (Commercial Heavy-Duty) - Change
Illustration 51
Typical example
2. Open the drain cock or remove the drain plug (1)
on the engine. Also, remove the drain plug (2).
Open the drain cock or remove the drain plug on
the radiator.
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 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, in order 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 at low idle 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 in
order 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.
Fill
1. Close the drain cock or install the drain plug on the
engine. Close the drain cock or install the drain
plug on the radiator.
g02350785
Do not fill the cooling system faster than 5 L
(1.3 US gal) per minute, in order to avoid air locks.
Cooling system air locks may result in engine
damage.
2. Fill the cooling system with Commercial Heavy-
Duty Coolant. Add Supplemental Coolant Additive
to the coolant. For the correct amount, 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.
3. Start and run the engine at low idle. Increase the
engine rpm to high idle. Operate the engine in
order to open the engine thermostat. This will
allow any air in the system to be purged. Decrease
the engine speed to low idle. Stop the engine.
4. Maintain the coolant level at the maximum mark
that is correct for your application.
SEBU8601-04
NOTICE