Perkins 1204EA-E44TA Operation And Maintenance Manual page 93

M0135751
Illustration 53
Typical filler cap gaskets
3. Clean the cooling system filler cap and check the
condition of the filler cap gaskets. Replace the
cooling system filler cap if the filler cap gaskets are
damaged. Reinstall the cooling system 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.
Cooling System Supplemental Coolant Additive (SCA) - Test/Add
Use a Coolant Conditioner Test Kit 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
supplemental 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 addi-
tives together could result in supplemental coolant
additive concentration exceeding the recommended
maximum.
g02590196
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.
i07682818
When any servicing or repair of the engine cooling
system is performed the procedure must be per-
formed with the engine on level ground. Having the
engine level will allow you to check the coolant level
with greater accuracy. When the engine is level, it will
also help in avoiding the risk of introducing an air lock
into the coolant system.
1. Slowly loosen the cooling system filler cap 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 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.
Maintenance Section
NOTICE
NOTICE
93