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Loader common fault analysis and troubleshooting methods (1)

1. It automatically travels forward in neutral. It can also drive normally when it is put into forward gear. When it is put into reverse gear, the machine stops and cannot move. The working pressure of each gear is normal. Cause of failure: (1) The main and driven plates of the forward clutch are... Read More

Taboos in construction machinery maintenance—opening the water tank and adding cold water suddenly

  There are many taboos about construction machinery maintenance. This article is the ninth and last article in this series. If you are interested in this kind of knowledge, you can follow us.   During the maintenance of construction machinery, overloading of the engine, poor heat dissi... Read More

The taboo of construction machinery maintenance—not checking the plunger stroke allowance

There are many taboos in construction machinery maintenance. This article is the 8th in this series. If you are interested in this, you can follow us. During the commissioning of the plunger fuel injection pump, many maintenance personnel do not pay attention to check the stroke margin of the plu... Read More

Taboo for construction machinery maintenance—too high tire pressure

There are many taboos in construction machinery maintenance. This article is the seventh in this series. If you are interested in this, you can follow us. The tire inflation pressure of wheeled construction machinery is an important factor in determining its service life and work efficiency. Tire... Read More

Taboos in construction machinery maintenance—Using emery cloth to polish bearing bushes and tightening bolts too tight

Maintenance taboo 6: Use emery cloth to polish the bearing bush For some inexperienced repairmen, scraping is a difficult job. Since the scraping technique is difficult to master, it is difficult for the bearings to meet the technical requirements. For this reason, when some people replace the be... Read More

Taboo in construction machinery maintenance—piston open flame heating

When measuring the cylinder clearance, it is not possible to measure in the direction of the piston skirt perpendicular to the piston pin hole, but in other directions. Since the piston and piston pin have an interference fit, when installing the piston pin, the piston should be heated and expand... Read More

Taboos in construction machinery maintenance—Inaccurate measurement of cylinder clearance

When measuring the cylinder clearance, it is not possible to measure in the direction of the piston skirt perpendicular to the piston pin hole, but in other directions. The structural characteristics of the aluminum alloy piston are that the top is small and the bottom is large, it is a cone, and... Read More

Taboo of engineering machinery maintenance — new cylinder liners and pistons are installed without selection

When replacing the cylinder liner and piston, some maintenance novices think that the new cylinder liner and piston are standard parts, which are interchangeable and can be used after installation. In fact, there is a certain tolerance range for the size of cylinder liner and piston. If the cylin... Read More

Taboos in construction machinery maintenance—Indiscriminate use of butter

Butter is a commonly used grease in the repair of construction machinery, which can play a role in lubrication and sealing. Therefore, some repairmen will apply a layer of butter on the cylinder gasket when installing it, thinking that this can increase the sealing of the diesel engine. As everyo... Read More

Taboos in construction machinery maintenance—Only adding oil but not changing it

Engine oil is indispensable in the use of diesel engines. It mainly plays lubrication, cooling, cleaning and other functions. Therefore, many drivers will check the amount of lubricating oil and add it according to standards, but they neglect to check the quality of lubricating oil and replace th... Read More

Causes and troubleshooting methods of loader hydraulic system failures (Part 2)

This article continues to discuss the causes and troubleshooting methods of loader hydraulic system failures. 6. Boom lifting or bucket turning speed is slow * The safety valve is improperly adjusted and the system pressure is low. Check whether the system pressure reaches the specified value. *... Read More

Failure Causes and Troubleshooting of Loader Hydraulic System (Part One)

1. Common Faults * If the working pressure of the system is insufficient and the pressure regulation of the safety valve is too low, the pressure of the safety valve shall be adjusted. * If the slide valve of the safety valve is stuck, it should be disassembled, cleaned and reassembled. * If the ... Read More
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