Case 721G Stage IV, Operator'S Manual

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7 - MAINTENANCE
Washing of the cooling system
1. Empty the engine cooling system by draining the coolant into a suitable container.
2. Fill the system with clean water.
3. Start the engine and run the engine for at least 30 min .
NOTE: make sure that you activate the heating system (if equipped) to circulate fluid through the heater core.
4. Repeat Steps 1 to 3 for a total of two washes.
5. Fill the system with OAT coolant.
6. Operate the engine until it is warm. Inspect the machine for leaks.
You can identify OAT coolant by its yellow color. Also, the
decal shown is located near the fill point of the cooling
system whenever the factory fill is
CASE AKCELA ACT-
IFULL™ OT EXTENDED LIFE COOLANT . This decal is
available in three different sizes. See the table below for
the associated part numbers.
CNH Industrial part
number
Size
47757330 50 mm x 50 mm
47757331 75 mm x 75 mm
47757332 100 mm x 100 mm
47757330
1
Definitions
Conventional coolant:
A coolant that relies on inorganic inhibitors such as sil-
icates, nitrites, and phosphates for corrosion and cavi-
tation protection.
Organic Acid Technology (OAT) coolant:
A coolant that relies on inhibitors such as organic acid
salts (potassium and sodium salts) for corrosion and
cavitation protection. The organic salts produce a pro-
tective film on the cylinder lines, avoiding cavitation ero-
sion.
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