TUBE AS 2444869 - Caterpillar

Probable Cause
The main relief valve setting is too low.
The charge pressure is incorrect.
The electrohydraulic control (work tool) is not functioning properly. Check the calibration of the joystick.
The control valve (work tool) is not functioning properly. Check the calibration of the implement valve solenoid.
The cylinder is not functioning properly.
The work tool pump is not functioning properly.
One of the lines or one of the hoses is broken.
The diverter valve (if equipped) is not functioning properly.
The interlock system is not functioning properly.
The load is too heavy.
A line relief valve is set too low.
A load check valve on the control valve is stuck in the CLOSED position.Problem 10
The auxiliary hydraulic system is not functioning.Probable Cause
The switch for the hydraulic shutoff valve is in the OFF position.
The auxiliary controls on the joystick are not functioning properly.
The platform harness, the cab harness, or the harness for the electrohydraulic operated control (work tool) is not functioning properly.
The auxiliary solenoids are not functioning properly.
The control valve (work tool) is not functioning properly. Check the calibration of the implement valve solenoid.
The work tool pump is not functioning properly.
The harness for the work tool is not functioning properly.
The ECM or the software is not functioning properly.
The line relief setting is too low.
The auxiliary circuit connections are not fully engaged.Problem 11
All work tool functions and auxiliary functions are sluggish, erratic, or intermittent.Probable Cause
The work tool pump is not functioning properly.
The main relief setting is too low.
The electrohydraulic control (work tool) is not functioning properly. Check the calibration of the joystick.
The hydraulic system is contaminated.
The control valve and the spools have an excessive amount of wear.
The charge pressure is too low.
The line relief valves are set too low or the line relief valves are damaged.
The load check valve is partially closed.
The auxiliary solenoid is not getting an adequate amount of current.
The seals on the lift valve spool are damaged or worn.
The cylinders may have leaks.
The diverter valve (if equipped) is not functioning properly.
The ball valve is not fully closed.
The power supply from the engine is low.Problem 12
The work tool pump makes noise and the cylinder rods move erratically.Probable Cause
The hydraulic oil is aerated.
The viscosity of the oil is incorrect.
The setting of the main relief valve is too low.
There is a loose connection of the oil line on the inlet side of the pump.
The gear pump has too much wear.
The line relief valve is set too low.Problem 13
The oil pressure in the hydraulic system is low.Probable Cause
The setting of the main relief valve is too low.
The work tool pump has too much wear.
The control valve and the valve spools have an excessive amount of wear.
The setting of the line relief valves is too low.
The pilot pressure is too low.Problem 14
The work tool moves while the hydraulic control is in the HOLD position.Probable Cause
The electrohydraulic operated control is not calibrated correctly.
The control valve and the valve spool have an excessive amount of wear.
A piston seal in a cylinder has excessive wear.
There is a external leak between the control valve (work tool) and