XQ400 Power Module Caterpillar


Coolant Level - Check

Usage:

XQG400 AL5
Check the coolant level when the engine is stopped and cool.


Illustration 1g03863248


Illustration 2g00285520
Cooling system filler cap

------ WARNING! ------

Pressurized System: Hot coolant can cause serious 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.


  1. Remove the cooling system filler cap slowly in order to relieve pressure.

  2. Maintain the coolant level within 13 mm (0.5 inch) of the bottom of the filler pipe. If the engine is equipped with a sight glass, maintain the coolant level to the proper level in the sight glass.


    Illustration 3g00103639
    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.

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