What are the reasons for the hydraulic failure of the truck? Daily faults and solutions

Most users do not pay attention to the normal operating procedures and cause the pallet truck to fail when using the manual hydraulic truck, but they do not know the reason, for example, the hydraulic truck cannot be pressed.

The reason why the manual hydraulic truck cannot be lifted

1) No hydraulic oil

2) The purity of the oil is not enough

3) The adjustment bolt is too close or the adjustment screw is too tight, so that the valve is always open,

4) There is air in the hydraulic cylinder

We know that the reason why the pallet truck fork does not electric pallet lift truck will be dealt with in time when there is a problem. The manual hydraulic truck plays an irreplaceable role in the entire handling process, so we must pay attention to maintenance during use, so that we can Our work efficiency has been greatly improved. The following are the common faults and solutions of manual hydraulic trucks.

Detailed explanation of daily failures and solutions of manual hydraulic trucks

1. The manual hydraulic vehicle cannot be pressed

Reason analysis: no hydraulic oil; insufficient oil purity; too close or too tight adjustment bolts, so that the valve is always open; there is air in the hydraulic cylinder.

Solution: refuel; change oil; vent air.

2. The fork of the manual hydraulic truck cannot be lowered

Cause analysis: The pressure-proof valve is not adjusted, the position of the piston rod of the oil cylinder is offset, and the parts are damaged or deformed due to the eccentric load

Solution: drop the positive pressure relief valve, replace the piston rod or cylinder, repair or replace related parts

3. When there is no pressure relief, the fork slides down

Cause analysis: There is air in the hydraulic oil, impurities in the hydraulic oil, the pressure relief valve is not adjusted properly, and the seal is damaged

Solution: Exhaust air, replace clean hydraulic oil, adjust pressure relief valve, replace with new seals

4. The fork of the truck does not rise

Cause analysis: There are impurities in the hydraulic oil, the pressure relief valve is not adjusted properly, and there is air in the hydraulic oil

Solution: replace the clean hydraulic oil, adjust the pressure relief valve, and remove the air in the oil pump

5. The truck leaks oil

Cause analysis: worn or damaged seals, cracked or worn parts

Solution: Replace with new seals and check for newer parts

6. The lifting weight is not up to the standard

Reason analysis: There are impurities in the hydraulic pressure, and the one-way valve cannot be closed

Solution: Change to pure hydraulic oil

7. Crawl when empty

Reason analysis: the door clip is deformed, the oil cylinder sealing ring is screwed too tightly, so that the resistance of the plunger rod is too large

Solution: Adjust the adjustable screw of the gantry or adjust the roller shaft, adjust the upper nut of the oil cylinder

8. Lifting slowly or crawling

Cause analysis: The hydraulic system is severely punished for leakage, the sealing ring is aged or damaged, and there is air in the hydraulic system

Solution: Tighten the oil-draining adjustable screw, replace the sealing ring, and remove the air

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