Electric Truck Knowledge
Fault Analysis of Vehicle Shaking When the Dump Truck Applies Brakes
Posted on by Electric Trucks
During the vehicle’s driving, it is normal. However, when the brake pedal is depressed, the steering wheel shakes severely.
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In principle: When braking, the force around the brake drum is uneven, causing it to move up and down. The manifested fault is the shaking of the front axle.
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Common fault points are:
① The working surface of the brake shoe is not flat and the brake chamfer is too small;
② The brake drum is out of round;
③ The steel rim is deformed or the mating surface with the brake drum is not flat;
④ The mating surface between the brake drum and the steel rim is not flat.
Treatment methods:
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Check whether the surface of the brake shoe is flat and whether the chamfer is normal; if the chamfer is too small, grind the chamfer. This process requires precision and attention to detail. If the surface of the brake shoe is uneven, it can lead to inconsistent braking force application, exacerbating the shaking problem.
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Check whether the brake drum is out of round; if it is, perform boring processing. Boring the brake drum requires specialized equipment and skilled technicians to ensure the accuracy and smoothness of the operation. An improperly bored brake drum can still cause braking issues and potentially increase wear on other components.
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The steel rim is deformed or the mating surface with the brake drum is not flat. For deformation, replace it. If the mating surface of the brake drum is not flat, perform boring processing. Replacing a steel rim is a significant undertaking and should only be done when absolutely necessary, as it involves not only the cost of the new part but also the labor and time for installation.
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The mating surface between the brake drum and the steel rim is not flat. Perform boring processing. Again, the success of this operation depends on the quality of the equipment and the expertise of the person performing the task.
Precautions:
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It is necessary to determine the working condition when this fault occurs: there is no fault during normal driving, and only the front axle shakes when the brakes are applied. This distinction is crucial in accurately diagnosing the problem. If the shaking occurs during normal driving as well, it could indicate other underlying issues with the suspension or steering components.
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During the fault inspection process, perform individual inspections of the brake drum and the steel rim; first, determine whether the rotating part is out of round or unbalanced. This step-by-step approach helps narrow down the source of the problem and prevent unnecessary disassembly and replacement of components.
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The inspection process is from the overall to the local, from easy to difficult, to reduce the workload. By following this logical sequence, technicians can save time and effort while increasing the chances of accurately identifying and resolving the fault.
Let’s consider a real-world example where a dump truck owner experiences severe shaking when applying the brakes. The technician begins by checking the brake shoes and discovers that the chamfer is indeed too small. After grinding the chamfer, the problem persists. Moving on to inspect the brake drum, it is found to be out of round. Boring the drum seems to solve the issue initially, but after a short period of time, the shaking returns. This time, a closer examination reveals that the steel rim is slightly deformed, which was overlooked in the earlier inspections. Once the rim is replaced, the braking system functions smoothly.
Now, let’s delve deeper into the potential consequences of ignoring this fault. Continued driving with a shaking front axle when braking can put excessive stress on other components of the braking system, such as the brake pads, calipers, and brake lines. This can lead to premature wear and failure, increasing the risk of brake failure and a potential accident.
In addition to the mechanical aspects, the driver’s experience and confidence can also be affected. A constantly shaking brake system can make the driver nervous and less confident in the vehicle’s ability to stop safely, especially in emergency situations.
Looking to the future, advancements in brake system technology may lead to more self-diagnostic and self-adjusting features in dump trucks. Sensors and computer systems could monitor the condition of the brakes in real-time and alert the driver or even automatically make minor adjustments to optimize performance.
Furthermore, improvements in materials and manufacturing processes could result in brake components that are more resistant to wear and deformation, reducing the likelihood of these types of faults occurring in the first place.
In conclusion, understanding and addressing the issue of vehicle shaking when the dump truck applies brakes is not only essential for the safe and efficient operation of the vehicle but also an area that is likely to see continuous improvements and innovations in the automotive industry.
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