What are the steps and precautions for replacing vehicle bearings?

Vehicle bearing replacement steps and precautions are:

Step 1: Use the hand brake to secure the vehicle. This will prevent the vehicle from moving forward or backward with the support of a safety bracket.

Step 2: Loosen the front or rear wheel retention nut and push the front or rear wheel of the vehicle off the ground. Install brackets on each side of the vehicle as a safety support under the vehicle. Remove the retaining nut and front wheel.

Step 3: Remove the brake caliper from the strut assembly. Then use a flat-tipped chisel and hammer to remove the grease cover. Remove the cotter pin and loosen the castle nut. The hub assembly is now free and can be removed from the shaft. The outer wheel bearings and washers are loose and can be easily removed.

Step 4: Remove the old grease seal from the hub assembly. This can be done by manipulating the used oil seal with a screwdriver or lever. Wash the hub assembly thoroughly. There will be two visible fixed notches on the opposite side of the hub assembly, separated by 180 degrees.

Step 5: Insert a small punch into an indentation and gently tap it with a hammer. Repeat this process on the opposite indentation until the bearing race is completely removed.

Be careful not to cause any indentations or burrs, as this will prevent the proper installation of the new bearing kit. Perform the same steps on the opposite wheel in order to remove the two wheel bearings.

Step 6: Use a hydraulic press to install a new bearing race. Make sure to use the correct size clamp sleeve or socket.

If you don't have a hydraulic press, you can use a hammer and a flat-head punch or socket. These should be used very carefully so that the tapered shaft area is not scratched or damaged, as this will result in high points that can damage the new bearing race when installed.

Step 7: Place a small amount of grease in the palm of your hand and hold the bearing with your other hand. Knock the bearing into the new grease, making sure that the grease between the bearing cage and the rollers surrounds the entire circumference of the new bearing.

Squeeze the remaining grease onto the hub cap, insert the lubricated bearing into the hub, and tap until it engages properly. Turn the hub over and install the new outer bearings and washers into the hub.

Step 8: Install the hub assembly into the shaft and tighten the retaining nut. This will correct the required bearing preload.

Gradually turn the hub assembly while tightening the fixing nut. When the bearing begins to bond when tightened, loosen the nut slightly until the bearing rotates freely again, then allow the relevant wrench or rod to fall on its own. The preload on the bearing now meets the required preload specification.

Reinstall the new cotter pin and reinstall the grease or dust cap.

Step 9: Reinstall all the components in the reverse order from the removal. Make sure to clean all relevant components, especially all relevant fixing bolts, before installation. Apply the same step-by-step process described above to replace the opposing wheel bearings.

Step 10: Reinstall the wheels of your vehicle and press the brake pedal a few times to ensure that all relevant parts readjust and concentrate themselves. Remove the bracket and lower the vehicle to the ground. Tighten all set nuts for the wheels.

The main function of hub bearing is to bear the load and provide precise guidance for the rotation of the hub, it bears both axial load and radial load, and is a very important component.

The traditional bearings for automobile wheels are composed of two sets of tapered roller bearings or ball bearings, and the bearings are installed, oiled, sealed and the clearance adjustment are carried out in the automobile production line.

This structure makes it difficult to assemble, costly, and unreliable in automobile production plants, and the bearings need to be cleaned, oiled and adjusted when the car is maintained at the repair point.

The hub bearing unit is developed on the basis of standard angular contact ball bearings and tapered roller bearings, which integrates the two sets of bearings, which has good assembly performance, can omit clearance adjustment, light weight, compact structure, large load capacity, can be pre-loaded with grease for sealed bearings, omitted external hub seals and free from maintenance, etc., has been widely used in cars, and has a tendency to gradually expand its application in trucks.

What are the steps and precautions for replacing vehicle bearings? Tool raw materials, lubricating oil, clean white paper, assembly and disassembly tools.

Step by step method: Read step by step.

Ensure the cleanliness of the bearing and the assembly and disassembly environment.

Bearings are precision parts, and the ingress of dust can destroy the integrity of the lubricating oil film and cause contact potential difference corrosion, which is a common factor causing wear, fatigue and corrosion, which has a very bad impact. Therefore, the bearing itself, the installation site, the tools used, the cleaning oil, the lubricating oil, and the surrounding environment should ensure a high degree of cleanliness, and it is best to set up a special assembly and disassembly place.

Do a good job in the rust and dust prevention of bearings.

The bearing should only be opened and cleaned immediately before it is about to be installed. After the bearing is removed from the machine, if it is still valuable for continued use, it should be immediately cleaned and encapsulated or installed in the machine that continues to be used. If it is necessary to store it until the next day, it must be placed in a clean place or encapsulated.

Strictly ensure the anti-rust conditions of the bearing.

It is absolutely forbidden to touch the bearing directly with your hands without cleaning, you can use a piece of non-corrosive clean white paper to hold the bearing, or after washing your hands thoroughly with sweat and grease and applying high-quality mineral oil, you can directly touch the bearing with your hands.

Use appropriate assembly and disassembly methods and tools.

According to the type characteristics of the bearing and the tightness of the fit, choose the appropriate loading and unloading methods and tools, it is best to use special tools, pay attention to not use cloth, yarn or staple fiber materials that are easy to fall off the silk threads to wipe the bearings or tools.

The assembly and disassembly work should be operated in a civilized manner.

Because the bearing is a precision mechanical element, the surface hardness is high, and the contact part is a point-line contact, which is easy to cause indentation and bruising on the rolling surface during brutal loading and unloading, and must be strictly prevented.

Precautions. The assembly and disassembly of bearings should be carried out by someone who is proficient in this business.

In the summer rainy season, more attention should be paid to the anti-rust work of the bearing.

Generally speaking, the normal condition of automobile wheel bearings is 50,000 kilometers to inspect and about 100,000 kilometers to replace. But this answer is not a one-size-fits-all answer. The life cycle of automotive wheel bearings is also related to road conditions and personal driving habits.

The average life of wheel bearings is 136,000 to 160,000 km. However, this is only an empirical judgment of ours, and the actual life of the wheel bearing depends on the quality and working conditions of the wheel bearing. If you have more potholes on the road section, it will also have a certain impact on the life of the four-wheel bearing.

This can not be generalized, it depends on what road you run, if the road condition is better, are cement roads and asphalt roads above the flat road, two or three hundred thousand kilometers are no problem, because I have a car, drive to so many kilometers, there is no problem with the bearing. If the bearing is used normally, there is no external impact, basically it does not need to be replaced, so far, I have seen the bearing used the most kilometers is more than 500,000 kilometers, and is still in use!

At present, most of the wheel bearings used in cars are maintenance-free bearings, which also depends on the advancement of current manufacturing technology and material technology. The wheel bearing of this structure does not belong to the maintenance class of components, so there is no regular maintenance or replacement, the same model of some cars about 60,000 kilometers, the bearing began to make abnormal noise, some 80,000 kilometers began to make abnormal noise, this is also a sound in the four-wheel bearing, and some cars have not seen an abnormal sound for 150,000 kilometers.

As long as you look at the origin of the bearing, Germany and Japan bearing quite domestic life will be slightly better life longer and more durable, with the vigorous development of our country, the quality of domestic bearings is also leveraged, car wheel bearings in fact there is no fixed replacement cycle standard, driving habits and bearing quality and maintenance has a great relationship. However, wheel bearings are now almost maintenance-free, but minimizing the impact of a collision on the front wheel can extend the service life of the bearing.

We tend to overlook an important part when maintaining a vehicle, and that is the bearing of the tire. The bearing not only bears the rotational motion of the wheel and the body, but also supports the weight of the entire body. It can be seen that the working strength of the bearing is not easier than that of other components.

If properly maintained and used, the bearings of the car can generally be used for about 100,000 kilometers. After 50,000 kilometers, we should regularly check and maintain the bearings. The maintenance of the bearing is generally to clean the stains on the bearing, check whether the bearing is running well, and replace the grease.

Note: The maintenance project must go to a professional 4S shop or repair shop to operate, do not DIY at home.

The life cycle of car bearings is also related to road conditions and personal driving habits, generally speaking, the normal condition of car bearings is 50,000 kilometers to inspect, and about 100,000 kilometers to replace.

This depends on the situation of the car, generally when it reaches 580,000 kilometers, it will be checked and replaced.

Generally, the service life of family car bearings is higher than 100,000 kilometers.

Disc brakes for small cars generally use integral wheel bearings. If the hub bearing on one side of the front wheel is damaged, the brake disc and friction pads can be used normally, and the bearing can be replaced when it is determined that the bearing on the other side is fault-free. Adjustable hub bearings are used, which can also be replaced directly.

Or use a stethoscope to listen to whether the bearing hum is obvious, or whether there is a hairpin feeling when turning the tire, such as the front wheel only one side of the hub bearing abnormal noise, replace one, no need to replace a pair. If there is an abnormal sound on both sides, then replace both sides together according to the situation.

The front wheel bearing is the front wheel of the car, if the front wheel bearing is damaged, if it is not very serious, the noise will be very loud after driving, and it will make a buzzing sound, which is different from the tire noise. You can drive for half an hour, get out of the car and touch the back of your hand to the simple point that you think the bearing is damaged, if the kilometers are not long and the driving environment is good, then it is basically not a big problem. On the contrary, if the vehicle is old or the road is potholed, it is best to change the pair.

I just changed a pair, originally the left front wheel bearing had a problem, to the 4S shop after inspection, the master thought that the right front wheel bearing is also a little loud, then simply replaced, a total of 1100 yuan. I asked the master why the bearing just drove 60,000 kilometers on the situation, if it is because of an accident on one side of the accident only need to replace one, if it is because the car runs more than 100,000 kilometers or even more, it is recommended to replace the two together, most of the current car bearings are maintenance-free enclosed, need to replace the assembly.

There is no need to change a pair, because some cars have two in one rotation and the other one is fine. First according to the process to the front tire, front wheel stock, inner and outer bearings, after cleaning, to the bearing to press butter, everything cleaned, one by one back to the inner bearing, the outer bearing can be. Use a copper rod or other soft metal material smaller than the inner diameter of the bearing against the shaft end, add a cushion block to the lower part of the bearing, and gently tap it with a hand hammer to remove it.

When applying this method, attention should be paid to the appropriate position of the cushion block and the correct focus point.

Set-up kits, double hook wrenches, hook wrenches with joints, socket wrenches, three-arm pullers, internal puller sets, hydraulic tools, three-piece puller chucks, special bearing pullers.

The tools needed for automobile bearings are actually plates, screws, and when the bearings are replaced, some corresponding machinery is needed, which is very important to go to the professional place to repair the car.

When replacing a car bearing, you need to use a hydraulic puller, which allows you to replace it more quickly.

If you want to replace the bearing of the car, then the tools you need are the wrench, and the one that screws, these two tools can replace the car bearings well.

When replacing a car's bearings, the first step is to use the hand brake to secure the vehicle. Then loosen the front and rear wheel retaining nuts and push the front and rear wheels of the vehicle off the ground. Then remove the caliper from the strut assembly.

Then use a flat-tipped chisel and hammer to remove the grease cover. Then remove the old grease seal from the hub assembly. At last.

Insert a small punch into one of the indentations and tap it gently with a hammer. A hydraulic press is then used to install the new bearing race. Place a small amount of grease in the palm of your hand and hold the bearing with your other hand.

The hub assembly is then installed into the shaft and the set nut is tightened. Then reinstall all the components in the reverse order of disassembly. Finally, reinstall the vehicle, check the installation of each part well, and make sure there are no problems.

You need to use a jack, and you need to use some taper or hammer, and you need to use a stand.

After the tire is off the ground, it is easy to distinguish whether the noise of the wheel bearing is obvious on the side of the tire, or whether there is a hairpin feeling when turning the tire. At that time, the car was raised and the gas pedal was lifted to let the front wheel spin but could not hear the sound, probably because the bearing damage was not serious, and the bearing was not stressed when the car was raised, so the fault was not obvious, and the maintenance master manually slowly rotated the tire to hear a slight abnormal sound to determine the fault.

<> to judge whether the bearing is broken is actually very simple, if it is broken, there is a sound, sometimes similar to tire noise, to distinguish between the bearing is broken or tire noise, you can drive to about 50 yards back and forth to play the direction, and the sound is that the bearing is broken, the sound changes or becomes smaller is the tire noise. They are tapered roller bearings and standard angular contact ball bearings, which take these two sets of bearings as a whole, so that they have the advantages of light weight, large load capacity, good assembly performance, compact structure, can omit clearance adjustment, and omit the external hub tightness, etc., which also determines that it will be widely used in automotive parts.

There is no problem with 10 or 8 years without external force, for the current passenger car, the general bearing does not need maintenance, if the bearing is matched, if there is any technical defect or the brand is poor, it may be used for two or three years will be broken.

This really has no specific service life, and the use of environmental road conditions car brand has a lot to do with it, generally wading if not maintained, the bearing is easy to break, the bearing is generally fast to break when the first buzz, bad card ring, this support the car, the rotation of the tire can not have abnormal sound and stagnation, the bearing is rarely replaced more than 100,000 kilometers, and the tire must be replaced because it does not do more than 70,000 kilometers less than 80,000 kilometers. And now my car has 430,000 kilometers, and only a pair of front wheel bearings were replaced at about 380,000 kilometers, and the rear wheel bearings are estimated to be replaced for a long time.