1. Brake Failure. If the friction plate is severely worn and its thickness decreases, the brake clearance will increase, which can negatively affect braking performance. To address this, adjust the brake cover's adjustment gasket to ensure the clearance meets the manufacturer's specifications. If mud or oil has entered the internal brake mechanism, it can reduce the friction coefficient and lead to brake failure. In such cases, replace the oil seal and rubber seal, and clean all affected parts with gasoline. Make sure they are completely dry before reassembling and using them again. If the brake spring fails or the steel ball becomes stuck, causing the brake not to release properly, you should open the brake assembly, replace the return spring, and use fine emery cloth to grind the brake plate groove and steel ball. After cleaning the surfaces thoroughly, reinstall the components. Additionally, if the brake pedal has too much free play, it may result in incomplete release and cause braking issues. Loosen the interlocking pieces of the brake pedal, adjust the free stroke on both the left and right pedals according to the recommended specifications, and then reassemble the system. 2. Brake Overheating. If the brake pedal clearance is too small, the tractor may experience unintended braking while in motion, leading to excessive heat buildup. Adjust the free stroke of the brake pedal so that both the left and right pedals have a free travel of 90 to 120 mm as specified. If the keyway is too tight with the spline shaft, it can restrict movement and cause the brake to overheat. In this case, repair the spline so that the friction plate can move freely along the shaft. Another common cause of overheating is a faulty return spring on the brake pressure plate, which prevents the brake from fully releasing, leaving it in a semi-braked state. This continuous friction causes the friction plate to heat up. Replace the return spring to restore proper function and prevent overheating. Regular maintenance and inspection of these components can help avoid such issues and ensure safe operation.

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