Planetary reducer is a core component of automobiles. Its main function is to reduce the speed of high-speed power such as electric motors by meshing the small gears of planetary gears with the large gears on the output shaft. After being applied to automobiles, it can achieve the purpose of reducing speed and increasing torque, especially in downhill and high load conditions, which can reduce vehicle wear and prevent friction brake overheating.

Therefore, it is necessary to check and repair the wear level of the planetary gearbox of the car every once in a while. As the planetary gearbox is located in the chassis of the car, we need to use repair tools such as car jacks, socket wrenches, Phillips wrenches, screwdrivers, sandpaper, lubricating grease, etc.

The specific steps for replacing the planetary gearbox brake pads with a car jack are:

1. Use a wrench to loosen the fastening bolts of the wheel by half a turn, find the palm sized protruding rubber pad under the vehicle, and use a jack to lift the part. When the tire is slightly off the ground, all wheel bolts can be unscrewed and the wheel can be removed.

2. Disassemble the brake cylinder and use sandpaper to chamfer the edge of the brake pad in contact with the brake disc. If both the brake pad and brake disc need to be replaced at the same time, there is no need to polish the brake pads, just install them directly.

3. Apply some lubricating grease to the raised areas of the new brake pads and install the brake pads. Place the brake pads onto the cylinder bracket and install the tires.

In general, the steps for replacing planetary gearbox brake pads with a car jack are not obscure or difficult to understand. As long as you know how to replace tires with a jack, you can easily learn the steps for replacing brake pads.