Hand brake pneumatic valve leakage causes and prevention measures 2)

, hand brake pneumatic valve leakage when the hand brake setting, the location of the 'parking brake', hand brake for exhaust gas leak, be in usually, inlet pneumatic valve pneumatic valve closed, pneumatic valve seat is loose, or between the pneumatic valve and pneumatic seat deposit a foreign body, or damage caused by the inlet pneumatic valve seals. With the inlet pneumatic valve replacement seal kits can be solved. Related: special 】 【 After the rain of your car maintenance dedicated 】 【 Enjoy a cool summer summer car maintenance strategy when the parking brake, pneumatic valve leakage will not produce additional hand brake failure. However, when the hand brake lever is set to 'drive' position, hand brake pneumatic valve leakage, there will be a car rear axle drive wheels 'steak tight& #; & #; 失败。 This is usually due to the hand brake pneumatic valve stem and pneumatic valve closed lax contact. Apparently caused by a vent closed lax, may be due to the damage of the sealing ring, pneumatic valve rod or foreign agencies or separation between oil mouth closed is not caused by yan and. Remove the clean or replace inlet pneumatic valve seals, malfunction is ruled out. , too long before starting the car hand brake cylinder, brake cylinder home should have enough air pressure. Warning lights, buzzer stop call said the main brake ( The front and the rear brake cylinder brake pump) Have enough pressure, if the hand brake release time to 'drive' position, the hand brake pressure warning lamp light, and then hand brake cylinder pressure, spring brake chamber and not let go of the brake. So when car forcibly closed, rear axle will have a brake 'tight' phenomenon. Therefore need warning lights put out before starting the car. Under normal circumstances, after sufficient air brake master cylinder, but soon hand brake cylinder. If inflation is a long time, and then over the rear brake circuit and pneumatic valve problem between the hand brake circuit. Pneumatic valve is a one-way pneumatic valve, when the rear brake. Article, pneumatic valve should be open hand brake circuit pressure pneumatic circuit quickly. If you don't stuck open pressure regulation is too high, will lead to a long hand brake pressure circuit fault. Overhaul, adjust the pneumatic valve failure can be ruled out. , spring energy storage tank leakage spring energy storage cavity piston sealing ring damage, injury, strain and other chamber cylinder, will cause the chamber leak. For the rear wheel brake chamber gas spring energy storage is China unicom, so as long as there is a chamber leak, will lead to pressure drop on opposite sides of the car, lead to rear wheel 'tight' in the bill. In such a failure, you need to shut down, leakage brake chamber maintenance management. Remove and install the spring energy storage brake chamber should be carried out in the press, in order to ensure safety. , hand brake relay pneumatic valve leakage when parking, braking mode of the automobile, relay pneumatic valve leakage, the car will not result in a failure, it's clearly a inlet pneumatic valve seal between brake damage or pneumatic valve and pneumatic valve seat, foreign bodies, or impurities, to close the pneumatic valves due to lax. When the car in the running state, after the move is to continue to leak exhaust pneumatic valve, pneumatic valve exhaust closed lax and piston during this time will be obviously lower than the spring energy storage brake chamber pressure, the failure of the brake 'tight'.