The two rear wheels of 20 14 Grand Cherokee do not use brake oil, which is the lack of brake system maintenance. There are too many impurities in the brake master cylinder, the seal is not tight, the vacuum booster pump fails, the brake oil is too dirty or several brake oils are mixed and heated, resulting in air resistance, oil leakage in the brake master cylinder or the sub-cylinder, and air leakage in the air storage tank or pipeline interface. According to the road conditions and speed control direction, disengage the high gear, and at the same time blow a foot of empty oil quickly to change the high gear into the low gear. In this way, the engine will have great traction resistance to quickly reduce the speed.
Function of brake oil
The function of brake oil is to transfer the force exerted by the driver on the brake pedal to the brake cylinders on each wheel, push the brake pads to generate braking force and slow down the vehicle. Although its working principle is simple, it also has some requirements and characteristics in the process of use. Because the brake system works by friction, the friction will make the brake heat up quickly when the brake system works.