LAMP GP-REAR 2274972 - Caterpillar

Making contact with a running engine can cause burns from hot parts and can cause injury from rotating parts.When working on an engine that is running, avoid contact with hot parts and rotating parts.
The connection of any electrical equipment and the disconnection of any electrical equipment may cause an explosion hazard which may result in injury or death. Do not connect any electrical equipment or disconnect any electrical equipment in an explosive atmosphere.
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4C-6500 Digital Thermometer The 4C-6500 Digital Thermometer is used in the diagnosis of overheating conditions and in the diagnosis of overcooling conditions. This tool can be used to check temperatures in several different parts of the cooling system. Refer to Operating Manual, NEHS0554, " 4C-6500 Digital Thermometer Group" for the testing procedure.
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9U-7400 Multitach The 9U-7400 Multitach Tool Group is used to check the fan speed. Refer to Operating Manual, NEHS0605, " 9U-7400 Multitach Tool Group " for the testing procedure.The 9S-8140 Pressurizing Pump is used to test the cooling system's pressure cap. This pressurizing pump is also used to pressure test the cooling system for leaks.Check the coolant frequently in cold weather for the proper glycol concentration. Use the 245-5829 Coolant/Battery Tester Gp in order to ensure adequate freeze protection. The tester gives immediate, accurate readings. The tester can be used to test antifreeze/coolants that contain ethylene glycol or propylene glycol. Making the Correct Antifreeze Mixtures
Adding pure antifreeze as a makeup solution for the cooling system top-off is an unacceptable practice. Adding pure antifreeze increases the concentration of antifreeze in the cooling system. This increases the concentration of the dissolved solids and the undissolved chemical inhibitors in the cooling system. Add the antifreeze and water mixture in the same concentration as your cooling system. Refer to Operation and Maintenance Manual, "Refill Capacities and Recommendations" for determining the correct concentration of antifreeze and water.Test for the Water Temperature Sensor
Table 2
Required Tools    
Part
Number    Part Description    Qty    
4C-6500     Digital Thermometer     1    
Personal injury can result from escaping fluid under pressure.If a pressure indication is shown on the indicator, push the release valve in order to relieve pressure before removing any hose from the heat exchanger.
Making contact with a running engine can cause burns from hot parts and can cause injury from rotating parts.When working on an engine that is running, avoid contact with hot parts and rotating parts.
The connection of any electrical equipment and the disconnection of any electrical equipment may cause an explosion hazard which may result in injury or death. Do not connect any electrical equipment or disconnect any electrical equipment in an explosive atmosphere.
If you suspect that the water temperature sensor is providing an inaccurate reading, check the accuracy of the water temperature sensor by using the following procedure.Caterpillar Electronic Technician (ET) can also be used to read engine temperature.
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(1) PlugRemove a plug from water manifold assembly (1). Install the 4C-6500 Digital Thermometer into the port.Start the engine. Run the engine until the temperature reaches