Coolant Level - Navistar MaxxForce 7 Operation And Maintenance Manual

SECTION 5 – MAINTENANCE SCHEDULE AND SERVICE PROCEDURES
Service Procedures (cont.)

COOLANT LEVEL

Service Interval: Before Engine Operation
Extended Life Coolant (ELC) Premix 50/50 is the standard
factory fill for the cooling system. If a customer wishes to use
a different coolant, it should minimally meet ASTM D6210,
Standard Specification for fully - Formulated Glycol Base
Engine Coolant for Heavy Duty Engines. ELC Premix 50/50 is
used to replenish coolant loss and ensure that glycol / water
concentrations stay in balance.
WARNING: To prevent personal injury or death, do the
following when removing the radiator cap or coolant tank
cap:
• Allow the engine to cool for 15 minutes or more.
• Wrap a thick cloth around the radiator cap or coolant tank
cap.
• Loosen cap slowly a quarter to half turn to vent pressure.
• Pause for a moment until all pressure has escaped to avoid
being scalded by steam.
• Continue to turn cap counterclockwise to remove.
1. Check coolant level in the coolant tank.
• Coolant level should be at midpoint of ADD and MAX.
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• If coolant level is below the ADD mark, continue with
step 2.
2. Remove coolant tank cap and add ELC Premix 50/50 until
the fluid level reaches the midpoint between ADD and MAX.
3. Install and tighten the coolant tank cap until the plastic cap
clicks or the metal cap runs up against the detent.