Troubleshooting: No Pressure on Auxiliary System

Failure analysis:

① Check the steering of the motor.

Check whether the filter element of the oil filter is blocked. If it is blocked, it needs to be replaced or cleaned.

③ Check whether the air in the auxiliary pump is discharged, pull out the hose at the oil outlet of the auxiliary pump, and turn the coupling by hand to discharge the air.

④ Check whether the auxiliary pump is unloaded internally, pull out the hose of the oil return port of the auxiliary pump to check the oil output. If the oil volume is too large, the auxiliary pump needs to be replaced or the oil distribution plate needs to be ground.

⑤ Check the combined operation valve, plug the unloading valve with a plug or replace a piece of valve.

Check whether the relief valve spool is worn or blocked by pollutants, kerosene or gasoline can be used to clean the valve body or directly replace the new relief valve.

⑦ Check the level gauge to see if the oil tank is full.

Troubleshooting: hydraulic motor speed is too slow

Elimination method: You can first listen to whether the motor operation sound is normal, then pull out the motor unloading oil pipe, and judge whether the motor is unloaded due to wear and tear by looking at the oil quantity at the oil unloading port of the motor. Press the motor to see if the pressure is normal. If all are normal, the main pump system flow is not enough. Pump flow can be adjusted or replaced directly. (The flow pressure of the main pump has been tested before leaving the factory. It is recommended not to adjust it without special reasons)

Troubleshooting: Hydraulic motor cannot change speed

Exclusion method: After pulling out the oil outlet pipe of the variable speed valve, check whether the oil quantity of the hose is normal. If the oil quantity is small, check whether the valve core of the back pressure valve is flexible and not stuck. If it is stuck, it can be removed for cleaning or replacement. Check whether there is dirt in the variable speed valve causing blockage. It is recommended to clean or replace the variable speed valve with a new one. Check whether the variable speed valve core of the motor is flexible. If it is stuck, you can pry it several times with a screwdriver until the valve core is flexible.

Troubleshooting: The up and down movement of the main push cylinder is abnormal

Exclusion method: First check whether the cylinder hose is connected correctly, and the main push cylinder can be moved up and down separately. If the hose is connected incorrectly, it will cause one main push cylinder to go up and the other main push cylinder to go down, causing the power head to not move or to go up all the time.

Troubleshooting: The auxiliary cylinder does not operate, leaks oil or does not maintain pressure

Exclusion method: first check whether the hose is connected correctly, and then see whether there is oil leakage in its appearance, or directly open the auxiliary oil cylinder to check the oil cylinder seal. When using, it is found that the oil cylinder cannot be locked and the pressure cannot be kept. It needs to be repaired or replaced with a new two-way lock.

Troubleshooting: The system has abnormal purchasing valve after a period of time

Exclusion: check whether the oil red metamorphism, whether to buy from the regular manufacturers. If the oil is deteriorated or is foam, it is recommended to replace the new oil with quality assurance from regular manufacturers.