88 SEBU8605-01
Maintenance Section
Cooling System Supplemental Coolant Additive (SCA) - Test/Add
3. Pour the correc
t coolant mixture into the tank.
Refer to the Operation and Maintenance Manual,
“Refill Capacities and Recommendations” for
information o
n the correct mixture and type of
coolant. Refer to the Operation and Maintenance
Manual, “Refill Capacities and Recommendations”
for the cooli
ng system capacity. Do not fill the
coolant recovery tank above “COLD FULL” mark.
g00103639
Illustration 52
4. Clean filler cap and the receptacle. Reinstall the
filler cap and inspect the cooling system for leaks.
Note: The coolant will expand as the coolant heats
up during normal engine operation. The additional
volume will be forced into the coolant recovery tank
during engine operation. When the engine is stopped
and cool, the coolant will return to the engine.
Engines Without a Coolant
Recovery Tank
Check the coolant level when the engine is stopped
and cool.
g0
0285520
Illustration 53
Cooling system filler cap
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 pres-
sure.
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.
i03644
948
Cooling System Supplemental
Coolan
t Additive (SCA) -
Test/Add
Cooling system coolant additive contains alkali.
To help prevent personal injury, avoid contact with
the skin a nd 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
t
he concentration of the SCA.
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