Cooling System Coolant Level - Check
1. Open the left rear access door.
2. Check the coolant level of the coolant reservoir. Maintain the coolant level between the
"FULL" mark and the "LOW" mark. If the coolant reservoir is empty, follow Steps 2a
through 2i.
a. Unlatch the engine hood and raise the engine hood. Slowly loosen the cooling system
pressure cap in order to relieve system pressure. Remove the pressure cap. Note:
Refer to Operation and Maintenance Manual, "General Hazard Information" for
information on containing fluid spillage.
b. Add the appropriate coolant solution to the cooling system. Refer to the following
topics: Special Publication, SEBU6250 , "Caterpillar Machine Fluids
Recommendations" Operation and Maintenance Manual, "Capacities (Refill)"
c. Start the engine. Operate the engine without the cooling system pressure cap until the
water temperature regulator opens and the coolant level stabilizes.
d. Maintain the coolant level within 13 mm (0.5 inch) of the bottom of the filler pipe.
e. Inspect the condition of the gasket on the pressure cap. If the gasket is damaged,
replace the pressure cap.
f. Install the cooling system pressure cap.
g. Stop the engine.
h. Close the engine hood and latch the engine hood. Note: Refer to Operation and
Maintenance Manual, "General Hazard Information" for information on containing
fluid spillage.
3. If additional coolant is necessary, remove the reservoir cap and add the appropriate
coolant solution.
4. Install the reservoir cap.
5. Close the left access door.
