As we all know, if the ABS system wants to work normally, it must continuously collect the wheel speed data of the wheel, and the ring gear is an important part to transmit the wheel speed data to the sensor. The ABS gear ring is installed on the inner side of the hub and rotates with the hub during normal operation. The sensor fixed on the axle obtains the wheel speed of the wheel by judging the speed of the ring gear, and transmits the collected data to the ABS computer.

The gear ring is installed on the inner side of the wheel hub. During normal operation, it is inevitable to be polluted by some lubricating grease. In addition, the dust from the wear of the brake pads and brake drums will gradually fill the grooves on the surface of the gear ring over time. Many callers believe that the performance of the ABS system will not be affected by the pollution of the gear ring by oil sludge. In fact, this view is wrong. Because there are a lot of metal debris mixed in the sludge, these metal debris will have a great impact on the data collected by the sensor. In order for the ABS system to work normally, the greasy dirt on the surface of the gear ring must be cleaned during maintenance. The gear ring cleaning is relatively simple. It can be easily cleaned with a brush dipped in gasoline, diesel or carburetor cleaner and other solvents. It should be noted that when cleaning the gear ring, it is inevitable that the oil will fall into the brake drum. Finally, it must be cleaned, otherwise it will cause serious insufficient braking force and affect driving safety.

The installation of the gear ring is not complicated, and the thermal expansion and cold contraction can be easily completed

In addition to how to clean the gear ring, let's talk about how to install the ABS gear ring. When installing ABS later, many card users will find that the wheel hub of the original car does not have a ring gear, so they can only install it by themselves. The gear ring and hub are combined by interference fit. Under normal circumstances, they cannot be installed directly, and they can only be installed by the principle of thermal expansion and cold contraction. In order to save trouble, many repair factories often use gas cutting guns to heat the ring gear. Finally, although it can be installed successfully, the gear ring will be distorted after installation due to uneven heating, resulting in the failure of ABS system to work normally. The correct method is very simple. Find a metal basin, pour some lubricating oil inside, put the gear ring in, and finally ignite and heat the bottom. When the lubricating oil starts to smoke, take out the hot gear ring with a tool and install it directly.