ELBOW 0057925 - Caterpillar

Probable Causes
Restrictions in oil lines
Leaks at fittings and connections of hydraulic lines or hoses
Blockage of the main suction hose
Faulty Auxiliary Hydraulic Control Lever
Faulty Implement Lockout switchRecommended Actions
Reference: Refer to Specifications, System Operation, Testing and Adjusting, UENR4081.Check the monitoring system for any fault codes that are related to the ripper lever "raise/lower" position sensor.Check the monitoring system for any event codes that are associated with the ripper lever "raise/lower" position sensor.Restrictions In Oil Lines
Blockages, kinks, or restrictions in oil lines in both the supply and return oil lines can prevent oil flow to hydraulic components. Components cannot operate without oil flow from the pump. Components cannot operate properly with reduced flow or pressure available to motors, cylinders, actuators, and so forth.Check for restrictions on all hydraulic oil hoses, lines, and tubes in the system or the circuit in question. Correct any problems that are found then retest the hydraulic system for any symptoms.Leaks At Fittings And Connections Of Hydraulic Lines or Hoses
Leaks at fittings and other types of hydraulic line connections can cause loss of oil flow and prevent components from attaining pressures necessary to perform work. Pressure losses may generate complaints of weak lift force. Leaks at fittings and connections on the pressure side of pumps are a direct source of oil loss in the system, which can lead to component failure if the low oil levels are not monitored and pumps and motors are starved of oil. Leaks at fittings and connections on the suction side of pumps are a direct source of oil aeration, which can also damage components (cavitation) and create excess or unusual noise.Check for leaks at all fittings and connections of hydraulic oil hoses, lines, and tubes in the system in question. Correct any problems that are found then retest the hydraulic system for any symptoms.Blockage of The Main Suction Hose
Blockages or restrictions in the main suction oil line will stop the supply of hydraulic oil flow to the pumps. Components cannot operate without oil flow from the pump. Components cannot operate properly with reduced flow or pressure available to motors, cylinders, actuators, and so forth. Correct any problems that are found then retest the hydraulic system for any symptoms.