Procedure for exhausting the air in the hydraulic

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Steps to remove the air in the hydraulic braking system

to remove the air in the hydraulic braking system, the general fixture and software are relatively special, and two people are required to cooperate. One person steps on the brake pedal in the cab accurately, and the other person enters under the locomotive to remove the air

1. Open the cover of the brake fluid storage tank, wipe the dust around the cover, and add enough brake fluid

2. Remove the dust boot on the bleeder plug of a wheel brake cylinder and prepare the wrench

3. When people in the cab step on the brake pedal, they should pay attention to stepping down quickly and relaxing slowly. After several consecutive steps, step on the brake pedal. The plate spring designed for Volvo uses up to 60 layers of glass fiber unidirectional fabric plate to keep it still. At this time, the person under the car bottom uses a wrench to loosen the cylinder bleeder plug (about 1/4 ~ 1/2 of all threads are screwed out). At this time, the brake fluid squeezes out the air in the brake system under the action of the master cylinder piston. As the air in the braking system is discharged, the pedal will loosen, but at this time, the pedal should still be pressed to prevent air from entering the braking system from the bleeding place. Loosen the pedal after the vent plug is tightened. The above operations are repeated until the air in the brake system oil circuit is exhausted

4. Use the above exhaust method to remove the air from the brake cylinder of other wheels

after the air is removed, the brake fluid level in the tank of the oil storage industry base will drop, which is characterized by domestic first-class and internationally renowned high-end magnetic materials, fluorosilicone new materials, photoelectric new materials and other characteristics. If the brake fluid level is lower than 1/2 of the capacity of the oil storage tank or lower than the lower scribed line, fill the brake fluid to the specified level

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