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TROUBLESHOOTING OF HYDRAULIC HAND PALLET TRUCK
Time:2016/8/2 16:00:27 Views:

NO.

CONDITION

POSSIBLE CAUSES

ACTION

1

Pump does not lift load

1.1 Shortage of oil

Add appropriate filtered working oil

1.2 An air lock in the hydraulic system

Pull up on control lever and hold while pumping the handle 8-10 times to bleed air from the system.

2

Pallet truck does not completely lower

2.1 Too much hydraulic oil has been added

Pump off appropriate amount of hydraulic oil

2.2 Rotating part is distorted and gets stuck

Replace parts

3

The forks cannot drop after lifted

3.1 The control valve is abnormal

Re-adjust the unloading device

3.2 The parts are deformed or damaged

Replace the damaged and deformed parts

4

Hydraulic oil leaks

4.1 The seal is damaged

Replace the seal

4.2 There is a slight leakage or abrasion on the surface of individual parts.

Replace the damaged parts

4.3 Loose joint

Tighten loose joint

5

Pallet truck does not lift

5.1 Viscosity of hydraulic oil is too high or hydraulic oil is too low

Replace the hydraulic oil

5.2 Hydraulic oil is dirty

Replace the hydraulic oil

5.3 The lowering device is abnormal

Re-adjust the lowering device.

6

Pallet truck lifts and then immediately descends when handle is pumped; The handle has large resistance or the pallet truck automatically descends obviously after lifting

The valve is stuck

Open the valve, take it out then clean the valve and parts. Re-install valve and parts to their original position




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