Cooling System Supplemental Coolant Additive (Sca) - Test/Add; Add The Sca, If Necessary; Test For Sca Concentration - Perkins 1106A-70T Operation And Maintenance Manual

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Maintenance Recommendations

Cooling System Supplemental Coolant Additive (SCA) - Test/Add

1. Remove the cooling system filler cap slowly in
order to relieve pressure.
2. Maintain the coolant level at the maximum mark
that is correct for your application. If the engine is
equipped with a sight glass, maintain the coolant
level to the correct level in the sight glass.
3. Clean the cooling system filler cap and inspect the
gasket. If the gasket is damaged, discard the old
filler cap and install a new filler cap. If the gasket is
not damaged, use a suitable pressurizing pump in
order 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,
install a new filler cap.
4. Inspect the cooling system for leaks.
Cooling System Supplemental
Coolant Additive (SCA) - Test/
Add
Cooling system coolant additive contains alkali.
To help prevent personal injury, avoid contact
with the skin and the eyes. Do not drink cooling
system coolant additive.

Test for SCA Concentration

Heavy-Duty Coolant/Antifreeze and SCA
NOTICE
Do not exceed the recommended six percent supple-
mental coolant additive concentration.
Use a Coolant Conditioner Test Kit in order to check
the concentration of the SCA.

Add the SCA, If Necessary

Do not exceed the recommended amount of supple-
mental coolant additive concentration. Excessive sup-
plemental coolant additive concentration can form
deposits on the higher temperature surfaces of the
cooling system, reducing the engine's heat transfer
characteristics. Reduced heat transfer could cause
cracking of the cylinder head and other high tempera-
ture components. Excessive supplemental coolant
additive concentration could also result in radiator
tube blockage, overheating, and/or accelerated water
pump seal wear. Never use both liquid supplemental
coolant additive and the spin-on element (if equipped)
at the same time. The use of those additives together
could result in supplemental coolant additive concen-
tration exceeding the recommended maximum.
i03644948
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.
When any servicing or repair of the engine cooling
system is performed the procedure must be per-
formed with the engine on level ground. This will allow
you to accurately check the coolant level. This will al-
so help in avoiding the risk of introducing an air lock
into the coolant system.
1. Slowly loosen the cooling system filler cap in order
to relieve the pressure. Remove the cooling
system filler cap.
Note: Always discard drained fluids according to local
regulations.
2. If necessary, drain some coolant from the cooling
system into a suitable container in order to allow
space for the extra SCA.
3. Add the correct amount of SCA. Refer to the
Operation and Maintenance Manual, "Refill
Capacities and Recommendations" for more
information on SCA requirements.
SEBU8728
NOTICE
NOTICE