; Third, the spring of the gas-liquid master cylinder cannot return to its position, and the brake fluid cannot return to the oil storage chamber of the gas-liquid master cylinder under the action of high-pressure gas, causing the brake cylinder piston to fail to return; fourth is the disc type The brake cylinder piston cannot be returned due to dirty brake fluid or rusty piston. Therefore, we removed the hydraulic cylinder head 6 of the clamp and pushed out the piston of the sub-cylinder; then, we cleaned it with diesel oil, polished with 0robot bearing manufacturers sandpaper, and then further cleaned it, and replaced the new rectangular sealing ring 2. Try the machine again after reinstallation, the fault has been eliminated.S.The method of troubleshooting is to remove the disc brake caliper 1, remove the friction plate 4 and the dust ring 3, and reconnect the oil pipe joint; we hope to eject the piston under the high pressure of the brake fluid, but the number In the case of high air pressure, stepping on the foot brake valve was unsuccessful, and the piston 5 of the sub-cylinder could neither be returned nor ejected, and was completely stuck.. Four brake cylinders are installed on the disc brake 7, which are installed in pairs. The inspection found that the brake disc and the right friction plate were not completely separated, and the right brake cylinder piston was not returned. government rescue! A comprehensive summary of the market for nine cars in Beijing at the end of the year Yan! There are 4 possibilities for the super \u201cnaked\u201d refitting shop to cause the brake cylinder on the disc brake to fail to return: One is that the exhaust port of the foot brake valve 5 is blocked, and the high-pressure gas is instinctively discharged into the atmosphere, causing the gas-liquid master cylinder The spring cannot return, causing the brake oil to top the disc brake's brake cylinder piston and cannot return; second, the oil pipe from the gas-liquid master cylinder to the disc brake is blocked, causing the brake cylinder piston to fail to return. The brake fluid enters the brake cylinder piston chamber of the disc brake through the oil pipe and pushes the piston out; the piston drives the friction plate to clamp the brake disc and brake the wheels. When the brake pedal is stepped on, the high-pressure gas from the air compressor 1 pushes the gas piston of the gas-liquid master cylinder 4, and the gas piston pushes the oil piston.