LIFT GP 5049793 - Caterpillar

Sudden movement of the machine or release of oil under pressure can cause injury to persons on or near the machine.To prevent possible injury, perform the procedure that follows before testing and adjusting the power train.
Before you perform these procedures, refer to Testing and Adjusting, "Machine Preparation" for the correct procedure for machine preparation.The following operational checks can be used for the following items:
find leakage in the system.
determine whether the pilot operated hydraulic controls are functioning correctly.
determine whether the pumps or motors are functioning correctly.
determine whether the whole work tool system is functioning correctly.In order for the hydraulic system to function properly, each component in the system must be set to the correct specifications. Some components must be set prior to the testing of other components. A component that is not set properly will have an impact on other components in the system.Note: The oil in the hydraulic system must be at an operating temperature range of 50° 10°C (122° 18°F). In order to increase the oil temperature, start the engine and operate all the cylinders for at least five cycles. Also, drive the machine forward and drive the machine rearward.Lift Cylinder Speed Test
Note: Perform the lift cylinder speed test with an empty general purpose bucket. If a general purpose bucket is not available, then use a load weight of 200 kg (441 lb).
Fasten the seat belt and lower the armrest.
Start the engine.
Disengage the parking brake.
Run the engine at high idle with the pilot operated hydraulic control ( hydrostatic) in the HOLD position.
Operate the lift cylinder through at least five lift cycles. This will ensure that there