ENGINE AR- 5396605 - Caterpillar

Personal injury or death can result from sudden machine movement.Sudden movement of the machine can cause injury to persons on or near the machine.Prevent possible injury by performing the procedure that follows before working on the machine.Move the machine to a smooth horizontal location. Move away from working machines and personnel and lower the buckets or implements (loader and backhoe) and stabilizers to the ground.Permit only one operator on the machine. Keep all other personnel away from machine or in view of the operator.Engage the parking brake. Stop the engine.Move the hydraulic control levers to all positions to release the pressure in the hydraulic system.
Note: All tests and adjustments must be made with the oil in the power train hydraulic system at operating temperature. Be sure that the linkage adjustments are correct before the tests are made.
Move the machine to a smooth horizontal location. Move away from working machines and personnel. Lower all implements to the ground.
Permit only one operator on the machine. Keep all personnel away from the machine or in the viewing area of the operator.
Put blocks in the front of the tracks and behind the tracks.
The testing must be done in a closed area. If the test requires the parking brake to be disengaged, engage the service brakes.
Stop the engine.Procedure
When you are defining a power train hydraulic system problem, the following procedure should be used.First, do visual checks. If the problem has not been identified, do the operation checks. If the problem is not fully understood, do the instrument tests.The procedures help to identify the power train hydraulic system problems. When the problem is defined, go to the troubleshooting.The troubleshooting section lists the probable causes of a known problem. Since there may be more than one cause for a problem, the troubleshooting section may suggest specific instructions or instrument tests be done.The tests will help to identify the most probable cause.This list cannot give all possible problems and corrections. The service personnel must find the problem and the service personnel must locate the source of the problem. Then make the necessary repairs.During a diagnosis of the power train hydraulic system, remember that correct oil flow and pressure are necessary for correct operation.The output of the pump increases with an increase in engine speed and decreases when the engine speed is decreased. Oil pressure is caused by resistance to the flow of oil.When more checks are necessary use the following tools: 8t-5320 Hydraulic Test Group, 4c-4890 Hydraulic Test Group, 4c-4892 ORFS Fittings Group, stop watch, magnet, thermometer and ruler.Visual Checks
Personal injury or death can result from improperly checking for a leak.Always use a board or cardboard when checking for a leak. Escaping air or fluid under pressure, even a pin-hole size leak, can penetrate body tissue causing serious injury, and possible death.If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.
A visual inspection of the power train hydraulic system and the components of the system