BONNET-OIL COOLER 7N6426 - Caterpillar

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
Machine Preparation
Move the machine to a smooth horizontal location. Move away from working machines and personnel. Lower the work tools to the ground.
Allow only one operator on the machine. Keep all personnel away from the machine or in the view of the operator.
Engage the parking brake.
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Place the steering frame lock in the LOCKED position.Reference: For information about preparing a machine for troubleshooting, refer to the Testing and Adjusting, "Machine Preparation for Troubleshooting" for the machine that is being serviced.Hydraulic Fan Speed (Testing and Adjusting)
Place the transmission in the NEUTRAL position. Engage the parking brake. Connect Caterpillar Electronic Technician (ET) to the diagnostic connector. The diagnostic connector is located to the left and behind the operator seat.
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Start ET. When ET initializes, select the engine ECM from the choices that are available. Refer to Illustration 2.
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Illustration 4 g02428436
Check all fault codes under the engine ECM. Ensure that no faults are present in the fan drive system. Ensure that no faults are present with the hydraulic oil temperature sensor, engine coolant temperature sensor and inlet manifold temperature sensor. If no faults are present, ensure that economy mode is “disabled” in the transmission or Power Train ECM configuration. Begin the calibration. Select "Service > Calibrations > Engine Cooling Fan Calibration". Refer to Illustration 3 and Illustration 4.
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The screen that is shown in Illustration 5 will appear. Follow the instructions on the screen. Click on "OK".
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The "Calibrations" screen will appear. Select both check boxes. Click on "Begin".
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Ensure that the parking brake is set. Run the engine at high idle. Click on "Next" in the lower left corner of the screen.
Continue running the machine at high idle. Use the photo tach to measure the fan speed. Adjust