Perkins 1204EA-E44TA Operation And Maintenance Manual page 90

90
Maintenance Section
Coolant (Commercial Heavy-Duty) - Change
Illustration 51
Typical example
2. Remove 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.
3. Properly dispose of the drained material. Obey
local regulations for the disposal of the material.
For information regarding the disposal and the
recycling of used coolant, consult your Perkins
dealer or Perkins distributor.
Flush
NOTICE
Most commercial cooling system cleaning agents are
corrosive and their use is not recommended by Per-
kins. If commercial cooling system cleaning agents
have to be used, then the cleaning agents should not
be left in the system any longer then recommended
by manufacturers and engine temperature should not
exceed 30° C (86° F).
The system must be thoroughly flushed with clean
water after use of cleaning agents.
NOTICE
Cleaning agents for marine or industrial cooling sys-
tems must not be used, as they are very aggressive
and will damage cooling system components.
1. Flush the cooling system with clean water and a
suitable cleaning agent to remove any debris.
Refer to your Perkins dealer or distributor for
suitable cleaning agents.
2. Install connection hose. Clean the drain plugs.
Install the drain plugs. Tighten drain plug securely.
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 and install
the cooling system filler cap.
4. Start and run the engine at low idle for a minimum
of 30 minutes. The coolant temperature should be
at least 85° C (185° F).
g06315632
Improper or incomplete rinsing of the cooling system
can result in damage to copper and other metal
components.
To avoid damage to the cooling system, make sure to
completely flush the cooling system with clear water.
Continue to flush the system until all signs of the
cleaning agent are gone.
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. Remove the connection hose or remove
the cooling system drain plug. Allow the water to
drain. Flush the cooling system with clean water.
Install the connection hose.
6. The drain plug O rings on the engine block must be
replaced. Clean the drain plugs and install new O
ring seal. Install the drain plugs and tighten to a
torque of 35 N·m (25 lb ft).
Fill
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 the coolant/antifreeze.
Refer to this Operation and Maintenance Manual,
"Refill Capacities and Recommendations" topic
(Maintenance Section) for more information on
cooling system specifications.
M0135751
NOTICE
NOTICE
NOTICE