1、 Troubleshooting of Power System Malfunctions

When the tail lift of the car cannot be raised, Dilzu tail lift engineer suggests prioritizing the inspection of the power system. Electric or hydraulic drive devices may have the following issues:

Motor/hydraulic pump failure: If the equipment has no running sound or abnormal power output, it is necessary to check the wear of the motor carbon brush or the pressure value of the hydraulic pump (normally should be ≥ 150bar)

Battery issue: Voltage below 21V can cause insufficient power supply to the system. Dilizu tail lift are equipped with intelligent battery monitoring modules, which can quickly determine the battery status through LED indicator lights

Troubleshooting of tail plate not lifting, Dilzu tail lift engineer explains 7 major reasons and solutions in detail

2、 Circuit and control module issues

The circuit system of Dilzu tail lift adopts IP67 protection design, but it still needs to be checked:

Line connection: Check if the 9-pin interface between the remote control signal receiver and the main control board is oxidized and loose

Control module: Use a multimeter to test the resistance value of the solenoid valve (normal range 4.5-5.5 Ω). If there is an abnormality, replace the control motherboard

Emergency stop switch: accidental contact with the red emergency stop button can cause the system to lock. Rotate clockwise 90 ° to reset

3、 Common faults in hydraulic systems

Hydraulic system failures account for 43% of tail lift lifting issues, with a focus on:

Hydraulic oil leakage: Check whether the cylinder sealing ring (recommended to use nitrile rubber material) and oil pipe joints are leaking oil

Oil circuit blockage: Low temperatures in winter can easily cause hydraulic oil to solidify. It is recommended to use HVLP32 low-temperature anticoagulant hydraulic oil for the top beam column tail plate

Overflow valve setting: recalibration is required when the pressure value is lower than the standard value (≥ 16MPa for 2-ton payments)

4、 Mechanical structure exception handling

Hook stuck: lubricate the folding hinge with WD-40 and remove sand, gravel, and debris from the track

Overload protection: Dilzu tail lift is equipped with intelligent pressure sensors, which automatically trigger a buzzing alarm and stop running when overloaded by 110%

Balance cylinder failure: The old equipment may have a bent balance cylinder piston rod, and the hard chrome plated cylinder barrel component needs to be replaced

Tags： Car tail lift malfunction repair of Dilzu tail lift hydraulic system inspection tail lift circuit issue maintenance of loading and unloading equipment

Article：Troubleshooting of tail lift not lifting, Dilzu tail lift engineer explains 7 major reasons and solutions in detail

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