ENGINE AR-COMPLETE 3856958 - Caterpillar

Sudden movement of the machine or release of air or oil under pressure can cause possible injury or death to persons on or near the machine.To prevent possible injury or death, do the procedure that follows before testing and adjusting the Hydraulic System.
Note: Permit only one operator on the machine. Keep all other personnel away from the machine or in the operator's sight.
Move the machine to a smooth horizontal location. Move the machine away from any machines. Move the machine away from any personnel.
Move the transmission control to the PARK position. Stop the engine.
Activate the parking brakes.
Place wheel chocks in front of the wheels and behind the wheels. Refer to Disassembly and Assembly, "Wheel Chock (Front and Rear) - Remove and Install".
Illustration 1 g01561449
Retaining cable that is connected to the dump body
If it is necessary to lift the dump body of the truck, connect the retaining cable to the rear of the truck. Refer to Disassembly and Assembly, "Truck Body Retaining Cable - Remove and Install".
Make sure that the transmission control is in the PARK position.
Make sure that all of the oil pressure is released before any fittings, hoses or components are worked on. Visual Checks are the first steps for troubleshooting a problem. The visual checks will determine the problems that can be corrected quickly.Troubleshooting can be difficult so there is a list of possible problems in the service manual. In order to repair a problem, refer to the problem and the probable causes that are listed in the Testing and Adjusting, "Troubleshooting Section". This list of problems and probable causes will only give an indication of the existence of a possible problem and of the repairs that may be required. There are sometimes more repairs or other repairs that are required beyond the recommendations that are in the list. Remember that a problem is not normally caused by only one part. A problem is usually caused by the relation of one part with other parts. This list can not provide all possible problems and all probable causes. The service person must find the problem and the source of the problem. The service person must then perform the necessary repairs.