Other electric pallet truck failures and maintenance methods

1. The main reasons for slipping too fast under load are: oil leakage from pipelines and joints, or serious wear of multi-way valve stem or sealing ring, resulting in internal leakage and poor valve body sealing. The electric pallet lift truck cylinder piston oil seal is worn, causing internal leakage. There are a lot more.

2. The front and rear tire screws are loose, the wheel bearing is damaged, the rear axle plane bearing and the needle roller bearing are damaged, etc., abnormal situations will occur during driving.

3. Abnormalities in all parts of the vehicle should be eliminated one by one. After the test drive inspection finds problems, reasonable maintenance and treatment can be carried out to solve the problem.

4. Brake deviation. The reason for this failure is that the braking force of the left and right wheels is unbalanced, causing the pallet truck to lean to one side when braking. When braking, which side is grabbing forward, it is necessary to check which side of the brake clearance or master cylinder condition. The deviation is irregular, from left to right. If you turn left and then turn right when braking, check the braking condition of the left wheel first, otherwise check the right wheel. After Z, there is oil on the brake shoe friction pad or brake drum.

5. Oil leakage (including external leakage and internal leakage). The oil leakage of the master cylinder and the wheel cylinder is mostly caused by the wear of the leather cup and the leather ring. If the brake pedal feels very light, usually the master cylinder cup is worn and leaked; the seal of the piston cup, baffle or piston push rod seal of the supercharger booster cylinder and the control valve cup will cause poor sealing. Oil leakage; when the brake shoe is too thin or the brake clearance is too large, when the brake pedal is pressed hard, the wheel cylinder cup will overturn and cause oil leakage.

6. It is very laborious to step on the brake pedal. Cause of failure: expansion of master cylinder cup or master cylinder piston seal. The copper tube between the master cylinder and the supercharger is deformed or flattened, which makes the inner hole smaller and the oil flow is not smooth. The copper tube leading to the wheel cylinder is deformed, resulting in a smaller hole diameter and poor oil flow. The control cylinder seal expands and the brake fluid deteriorates. It's too viscous to make it runny.

7. Excessive consumption of brake fluid for pallet trucks

1), Check whether there is oil leakage in each pipeline;

2), the pallet truck gearbox shift control valve brake spool valve cup oil leakage, brake fluid into the transmission. At this time, the smell of brake fluid can be smelled from the transmission oil inspection hole;

3), the piston cup of the vacuum booster booster cylinder, the sealing ring Or a poor seal on the piston pushrod seal and control valve cup will cause excessive brake fluid consumption.

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