PULLEY-CRANKSHAFT 7W5686 - Caterpillar

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.
Boom must be raised and lowered through its full arc to test the hydraulics.To avoid personal injury, perform this test in an area with sufficient boom clearance especially from electrical power line contact and that is free of personnel. Prevent machine movement by applying the parking brake.
Check all of the implement oil line connections for damage or leaks.
Trace all of the oil lines from the implement connections to the valve connections. Check the lines and the connections for damage or leaks.
Check the pump and the connections for damage or leaks.
Trace the pump lines to the tank and the valves. Check the lines and the tank for damage or leaks.
Check the oil level in the tank.
Use a clear bottle or a container in order to get an oil sample immediately after the machine is stopped. Check for air bubbles in the oil sample.
Remove the filter element and check for particles that are removed from the oil by the filter. A magnet can be used in order to separate ferrous material from the nonferrous particles in the filter.