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What are the reasons for brakes not retracting?

1 Answers

VonGabrielle

07/29/25 10:28am

The main reasons for brakes not retracting are often due to not changing the brake fluid for a long time, which causes internal rusting in the brake caliper. It could also be due to poor precision of the caliper, leading to insufficient piston retraction, or possibly a blockage in the brake caliper pipeline. A detailed inspection by a repair shop is necessary to determine the exact cause. The brake caliper is an essential component of the braking system's chassis parts, primarily responsible for pushing the brake pads against the brake drum to reduce speed or bring the vehicle to a stop. When the brake pedal is pressed, the master cylinder generates thrust to push hydraulic fluid to the caliper, where the internal piston moves under hydraulic pressure to push the brake pads. Before replacing the caliper, disassemble the new caliper completely, clean it with carburetor cleaner, apply medical Vaseline, and install it properly. Then, bleed the air from the system. It is also recommended to replace the brake fluid with new fluid to prevent the brake caliper from rusting easily.

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