HOHAN Truck Adjust Arm QT020AQ10-3551010

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HOHAN truck adjust arm QT020AQ10-3551010

It is a crucial mechanical component in the braking system, responsible for automatically adjusting the gap between the brake pads and the brake disc, ensuring stable braking performance.

​Description

Function

The main function is to automatically adjust the brake clearance through a mechanical device.
1. Automatic adjustment: As the vehicle drives or brakes, the brake pads gradually wear down, and the brake discs deform due to thermal expansion and contraction. This device automatically compensates for these changes, ensuring that the brake pads always maintain optimal contact.
2. Preventing brake failure: If the brake clearance is too large, the brake pedal will become loose, and the braking effect will be reduced. This device prevents brake failure by adjusting the clearance.
3. Extending lifespan: Through precise adjustment, excessive friction between the brake discs and brake pads is reduced, extending the overall lifespan of the braking system.

Working Principle

Automatic adjustment is achieved through a helical or lever mechanism.
1. Stroke linkage: When the brake pedal is pressed, the brake caliper undergoes a small displacement. The adjustment arm detects this displacement signal.
2. Helical gear: The displacement signal drives an internal miniature helical gear or lever mechanism, causing the brake caliper housing to move slightly.
3. Gap compensation: This small movement is amplified into a change in the gap between the brake pad and the brake disc, achieving the automatic adjustment function.

Diagnostics

1. Abnormal brake pedal: The pedal travel becomes longer, and even pressing it all the way down doesn't stop the vehicle.
2. Brake noise: Due to excessive clearance, abnormal friction noise occurs between the brake pads and the brake disc.
3. Delayed braking: The brakes are slow to respond, or require prolonged pressure before they engage.

Replacement Advice

1. Inspect related components: Before replacement, it is recommended to check if the brake calipers and brake pads are severely worn.
2. Disassembly: The wheel, brake disc, and brake caliper need to be removed to access the adjustment arm.
3. Record position: When disassembling, please record the installation direction and position to avoid incorrect reassembly.
4. Lubrication: After installation, apply lubricant to the internal sliders and threads to ensure smooth operation.

HOHAN truck adjust arm QT020AQ10-3551010 used for automatically adjusting the brake clearance, it avoids the poor braking effect caused by excessive clearance. Improving braking efficiency: It ensures consistent stable braking effects on all wheels, thereby improving overall braking efficiency. Extending the life of brake components: It reduces material consumption and extends the service life of components. The working principle of the automatic adjustment arm is that when the car brakes, the one-way clutch rotates without driving the worm gear, thus not adjusting clearance. When the brake is released, if the relative movement between the rack and the control slip ring exceeds the set value, the adjustment arm will drive the and the driving gear during the return stroke, which in turn rotates the worm gear, causing the worm wheel and the camshaft to turn an angle, thus automatically the increased clearance due to the wear of the friction plate.                                 

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