Human error. For example, when maintaining the carburetor, the tension spring gasket falls into the intake pipe, resulting in the failure of the piston; The anti-freezing water plug is loose, causing water to enter the oil pan; When repairing, the crankshaft timing gear was accidentally damaged by something, exposing a bulge and pressing it on the timing gear on the camshaft, causing abnormal engine noise. Improper installation of the sealing ring of the valve guide leads to oil dripping in the exhaust pipe; Hearing abnormal sound and not taking measures, resulting in shaft failure; The connecting rod bolt was screwed too tightly and damaged, resulting in the failure of the engine tamping cylinder.
Leakage prevention method. Handle all kinds of washers carefully. Such as oil pan or valve cover, because of the large contact area, it is not easy to press, simply speaking, it is to form oil leakage. Oil leaks from the rear oil seal of the crankshaft, and the oil will enter the clutch, which not only wastes oil, but also makes the clutch plate dirty, slippery and burnt. Or repair and replace the main bearing in time. When the fit clearance between the main bearing and the journal is too large, the front and rear oil seals will lose their sealability due to the impact of the crankshaft, which will lead to oil leakage from the crankshaft head or oil seeping into the clutch, thus polluting the friction plate, leading to slippage and operation failure.
Forklift maintenance
Fork reminds you of the way to maintain the life of forklift.
During the normal operation and storage of forklift trucks, the performance of various parts of forklift trucks may gradually decline due to various factors, such as the wear and tear of some forklift accessories, the corrosion of environmental factors and natural aging, which may lead to the early life of forklift trucks. So how to make the forklift life longer?
First, replace the necessary filters and liquids.
1, oil and oil filter. Anyone who knows how to drive will know that a car needs to change the oil and oil filter of the forklift regularly. But there are also forklifts, and other liquids should be replaced regularly. This kind of replacement is necessary, because with the increase of operation time, they will lose important performance or function and fail directly.
2. Air filter element. In order to run the engine, it needs accurate oil-gas mixing, and all the air entering the engine must pass through the air filter element before entering the engine system. Therefore, the function of air filter element is to make air enter the engine in a very clean degree and mix with fuel for combustion, thus greatly improving the working efficiency of engine accessories; On the one hand, it can make the engine fully burn, ensure fuel economy, make the burner fully burn, reduce oil consumption, reduce waste gas and reduce environmental pollution; On the other hand, it can prevent a lot of dust and impurities in the air from entering the engine cylinder, effectively prevent the wear of the piston and cylinder liner, and thus prolong the working life of the engine. Therefore, it is one of the most basic methods to change the air filter of forklift regularly to make the engine life longer.
Second, the cooling system of forklift truck
The working temperature of forklift engine is too high or too low, which will damage its power and economy, or directly accelerate the damage of engine parts.
Therefore, ensuring that the cooling system of the forklift truck works normally and has enough cooling liquid can prevent the engine parts of the forklift truck from being stuck or burned due to high heating temperature, so that the engine cannot work normally, because the combustion of fuel and the friction between moving parts will generate a lot of heat, which will make the height of the engine parts very high. If the cooling system can't be cooled in time, it may even cause the forklift engine to melt directly. The cooling system consists of water pump, fan, radiator, thermostat and other accessories. It can be checked during routine inspection.
Fault maintenance judgment of electric forklift
As a new type of electric logistics handling equipment, pallet trucks have occupied a place in the broad market, and it will take time to replace diesel forklifts. With more and more enterprises using pallet trucks in the market, they are increasingly worried about the failure of pallet trucks in use. How to effectively avoid or eliminate hidden dangers has become a concern of business owners.
In view of such problems, we collected and summarized some problems that are easy to occur in the application of pallet trucks and how to solve and eliminate such problems in the communication and discussion with the company's engineers and technicians.
Fault phenomena and troubleshooting methods:
First, trembling occurs during ascension.
1. There is air in the lifting cylinder, which can be solved by multiple loading and lifting exhaust.
2. The hydraulic system leaks oil, and the oil seal and hydraulic cylinder are repaired and replaced.
Second, when a load falls from.
1. The oil pipe or oil connector leaks oil, and the seal can be replaced.
2. The electromagnetic and manual reversing valves and one-way valves are stuck with dirt or the sealing ring is worn, resulting in internal leakage. Treatment: clean the valve block and replace the seal.
Third, the hoisting speed is too slow or cannot be hoisted.
1. The oil tank is short of oil and needs to be replenished with hydraulic oil or completely replaced.
2. Overflow valve pressure is insufficient, please readjust.
3. The oil pump is excessively worn, which leads to internal leakage and needs to be replaced.
4. The electromagnetic and manual reversing valves, one-way valves and safety valves are worn or the seals are worn and aging, and need to be updated.
5. If the temperature of the hydraulic oil is too high for a long time, the hydraulic oil will deteriorate and its viscosity will decrease, resulting in leakage. Replace hydraulic oil.
Fourth, the driving wheel produces abnormal noise when walking.
1. The lubricating oil is mixed with hard impurities, and the lubricating oil is updated.
2. The bearing is excessively worn or damaged and needs to be replaced.
Five, brake failure
1. The control circuit is not disconnected. Check the control system.
2. The brake friction plate is worn and replaced.
Forklift maintenance service station
Six, completely motionless
1. Check whether the electric door lock is open or damaged.
2. Whether the battery is charged, the battery is insufficient, and the battery should be replenished.
Seven, can't go forward or backward
1. The battery is almost dead. Charge it.
2. Loosen the travel control microswitch and lock the screw.
3. If the DC contactor fails, repair and replace it.
4. The electric control board is damaged. Repair and replace it.
5. Drive motor failure, inspection and maintenance.
6. Brake lock, adjust the distance of the brake pad of the driving wheel.
Eight, the battery has a short life and cannot be charged.
1. The battery solution is insufficient, so distilled water or lead-acid water should be added.
2. If the battery is aging, please replace it with a new one.
3. Poor contact of power socket, repair contact surface.
4. If the battery is seriously damaged, please replace the unified battery.
Nine, the charger does not work
1. The charger is not displayed, and the fuse is blown.
2. The charger power light is on, the internal fuse is blown or the resistance type is open, and the rectifier tube is damaged.
Forklift maintenance plan
How to do forklift maintenance plan? Let me give you an idea:
1. How often is the forklift maintained? This is very important. Manual forklifts and manual palletizers generally have fewer parts. Compared with electric forklifts, diesel forklifts, dual-fuel forklifts and forward-moving forklifts, the maintenance cycle can be appropriately designed to be longer, such as once every six months. There are many parts of electric forklift, diesel forklift, dual-fuel forklift and forward forklift, so it is necessary to do a good job of maintenance under the condition of standardized operation. Regular maintenance is a powerful guarantee for forklift to work safely and efficiently!
Second, who will do the forklift maintenance? It is very important to find a forklift maintenance service provider with better technology, and it should be relatively stable and can be maintained throughout the service life of the forklift. If it can't be maintained until the middle period, the forklift maintenance service provider will quit, or for other reasons, it can't continue to provide forklift service for us. This situation is very bad, so we need to find a professional and stable forklift maintenance service provider. Moreover, the forklift maintenance service provider you are looking for can provide a maintenance plan according to your forklift usage, and he should be able to help you deal with some minor forklift failures. There must be countermeasures to eradicate the repeated minor faults, rather than perfunctory, so we must find a forklift maintenance service provider with a long history of forklift maintenance.
Thirdly, we can let the forklift maintenance service provider make a comprehensive and reasonable preventive maintenance plan for our forklift, such as how often to check the side and the test list of program debugging. These data can provide reference for our forklift maintenance. Secondly, technicians should provide us with a list of items for each inspection, so that we can better understand the working state of the existing forklift.
Fourth, in the preventive maintenance plan, don't forget the cleaning work of forklift. There are many reasons for forklift failures, but long-term failure to remove debris, broken steps and dust will also lead to some minor failures. So when making preventive maintenance plan, this should be put in. Good cleaning is very important for forklift maintenance.
Fifth, for the lubricating oil and hydraulic oil of the forklift, the oil quantity should be checked regularly to prevent the forklift from working in poor condition and serious wear and tear, and the oil quantity should be replenished in time. Electric forklifts, electric stackers and pallet trucks should pay attention to check the battery water capacity and replenish the battery water in time.
Sixth, pay attention to the storage of wearing parts. For some wearing parts, such as seals, a small amount should be stored when working. In case of emergency, if you want to replace the wearing parts, you can handle them yourself.
Seventh, the service provider must have a reasonable fee for a perfect preventive maintenance plan, and consider which one is more cost-effective, which can effectively reduce the use cost of your forklift.
Weifang forklift maintenance
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