How to repair brake shoes and friction plates
Release time：
2023-05-18 09:31
By using visual and percussion methods, the brake shoes and their friction plates should be free of cracks. The brake shoes should be inspected according to the sample plate. If they are bent, twisted, or deformed slightly, they can be corrected by cold pressing. Use a vernier caliper depth gauge to measure the distance between the rivet head of the friction plate and the surface of the friction plate, which should not be less than 0.80mm. The thickness of the lining should not be less than 9mm. Otherwise, replace it with a new lining or brake shoe assembly. If the friction plate has light oil stains and only a small amount of wear on the lining, gasoline can be used to clean the oil stains. After cleaning, it must be heated and dried, and then smoothed with a file and coarse sandcloth. The fitting area should be measured with the brake drum surface, and it must meet technical standards. It is allowed to continue using.
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Essentials of brake pedal operation
1. Slow braking: Press the clutch pedal while releasing the accelerator pedal, push the gear lever to the low gear position, then lift the clutch pedal and quickly place the right foot on the brake pedal. Gradually press the brake pedal according to the required speed and parking distance until it stops.
The working principle of the brake
Use the mutual friction between non rotating components connected to the vehicle body (or frame) and rotating components connected to the wheel (or transmission shaft) to prevent the rotation or tendency of the wheel. A brake is a device that has the function of slowing down, stopping, or maintaining a stopped state of moving parts (or moving machinery). The brake mainly consists of a brake frame, brake components, and control devices, and some brakes are also equipped with automatic adjustment devices for brake component clearances. In order to reduce braking torque and structural dimensions, brakes are usually installed on the high-speed shaft of equipment, but large equipment with high safety requirements (such as mine hoists, elevators, etc.) should be installed on the low-speed shaft near the working part of the equipment.
Disc and drum brake systems for motor vehicles
The function of the car braking system is to slow down or stop the driving car according to the driver's needs, maintain a stable speed for downhill driving, and keep the stopped car in place. According to the timing of the braking system, it can be divided into service braking system, parking braking system, emergency braking system, and auxiliary braking system. According to the braking control energy, the braking system can be divided into manual braking system, power braking system, and servo braking system. According to the transmission mode of braking energy, braking systems can be divided into mechanical, hydraulic, pneumatic, electromagnetic, and combination braking systems. The automotive braking system mainly consists of four parts, namely energy supply device, control device, transmission device, and brake.
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