BRACE AS-SHORT 4416517 - Caterpillar

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.
Stop the engine.
After allowing the engine to cool, check the coolant level. Refer to the Operation and Maintenance Manual for the proper procedure.Note: The coolant level sensor should be completely immersed in coolant.Expected Result:The coolant is at the proper level.Results:
OK - There may be an intermittent problem.Repair: Monitor the operation of the engine.Repair the problem.Ensure that the repair eliminates the problem. Stop.
Not OK - Repair: Repair the problem.Ensure that the repair eliminates the problem. Stop.Test Step 2. Check the Coolant Level Sensor
Check the coolant level sensor and the wiring to the sensor. Refer to Troubleshooting, "Coolant Level Sensor Circuit - Test".Expected Result:The coolant level sensor is OK.Results:
OK - There may be an intermittent problem.Repair: Monitor the operation of the engine.Repair the problem.Ensure that the repair eliminates the problem. Stop.
Not OK - Repair: Repair the problem.Ensure that the repair eliminates the problem. Stop.