The disc brake of the electric car is not flexible, the brake pads grind the brake disc, and it feel

Is there a lot of oil chamber brake fluid on the brake lever?

The method is: unscrew the upper cover of the oil chamber, use a syringe to extract it to less than 1 cm, insert the brake disc and the brake pad with a fruit knife, make the two leave, tighten the upper cover of the oil chamber, (note that there must be no air leakage).

Give it a try, friend.

Talk about the repair of the disc brake of the electric vehicle, and share the repair process of the disc brake

1. Replace the outer tire by purchasing it online;

2. It was found that the brake pads were polished, and the brake pads were replaced online and lubricated with hydraulic oil everywhere;

3. If you unintentionally unscrew the venting screw, open the upper pump and add water;

4. Buy 10mm T-shaped sleeve online; Replace and clean the lower pump with disc brake oil online, etc., from abnormal noise to brake (I personally think that it is not the problem of brake oil, but the water and hydraulic oil gradually cause slag and corrosion of the seal);

5. Repeated emptying and oil change still hold the brake, and replace the pump as a whole when purchased online, but it is not used because the pump purchased online cannot be equipped with a reflector, so the piston and the oil cup seal of the upper pump have to be replaced, and the brake is still held;

6. The 5th step is completed only after online shopping of the caliper;

7. When the lower pump seal was changed in the 4th step, it was found that there was some swelling (not enough experience to let go, and the process of poor sealing was gradual and not serious enough at that time), so it was judged that it was still a problem with a certain seal, so I bought a full set of seals online to replace them, and slowly grinded a few rounds of piston with fine sand.

The disc brake performed well after replacing the full set of seals, and the problem of non-return has been completely solved, but it remains to be seen.

There are various points of view on the principle of oil disc return: 1. Negative pressure return of the oil cup seal of the upper pump, 2. Negative pressure return of the piston of the upper pump, 3. Return of the sliding cap of the lower pump, 4. Return of the shrapnel of the lower pump, 5. Return of the air pressure between the double seals of the lower pump, etc.; Personally, I tend to the principle of negative pressure return of the upper pump, and at the same time: there are many reasons why the disc brake of the electric vehicle does not return, which is not listed one by one, but there are many reasons for the rust of the piston of the lower pump and the blockage of dust and swelling of the seal.

I hold the brake problem, I have seen a lot of analysis and solutions on the Internet, and now the problem is solved, and I hereby share its maintenance process.

In addition, I would like to add that the problem of braking is first of all according to what your personal car is, whether it is to hold the brake all the time or gradually hold the brake without damage or change the brake pads or tires and other changes, mine is the latter; Problems like the brakes are being asked by many people, and the people who repair electric cars are either uneven in technology or unwilling to work for a few small profits in the seals, and the oil disc brake I personally think it is a precision component or something that is not very reasonable in design.

Such a situation should be adjustedBrake padsand the brake disc, and to check itBrake fluidis not enough. If the amount of brake fluid is insufficient, then it needs to be added immediately.

Electric vehicles are a relatively common means of travel, the structure of such a means of travel is relatively simple, and the cost of use is also relatively low.

The key components of an electric vehicle include the frame, electric motor, battery, and regulator.

The function of the regulator is to adjust the circuit of the whole car, and most of the regulators will be fixed under the rear seat.

The electric motor is the power of the electric vehicle**, and the electric motor can drive the electric vehicle forward.

The battery is a part of the electric vehicle used to store electrical energy, and the battery can supply power to all the electronic devices on the electric vehicle.

Without a battery, an electric car would not work.

The battery is a wearing part that needs to be replaced regularly, and the performance of the battery may continue to deteriorate as the number of charge and discharge times increases.

During charging and discharging, the ions in the battery will be in the electrolyte.

Some ions react chemically with the electrolyte as they move in the electrolyte.

As the number of charge and discharge times increases, the number of ions in the battery may also decrease, and of course the performance of the battery may also decrease.

If you can maintain accurate car habits, this can still have an effect on extending the life of the battery.

When charging, you must use the original charger, and you must avoid overcharging and overdischarging the battery.

Tools Required: Screwdriver.

1. First find the brake adjustment screw behind the disc brake of the electric vehicle, and the position of the screwdriver in the picture is.

2. After that, use a screwdriver to clamp the disc brake of the electric vehicle, and twist the screw inward by hand to adjust the disc brake to make the disc brake tighter.

3. After that, turn the rear wheel of the electric vehicle, observe the rotation of the wheel, and judge whether the disc brake is tight.

4. Then press the disc brake of the tram to the position shown in the figure, so that the disc brake of the tram can be braked.

The electric car disc brake can't be adjusted? This operation is fast, good and simple!

Front brakes for electric vehiclesDisc brakesHere's how to adjust it:

1. Adjust loosening

There is a box for oil in the brake handlebar, unscrew the screw to open the cover, and then keep opening and closing the brake handle, so that the air inside is discharged, the exhaust can increase the brake sensitivity, and finally close the cover, if it still doesn't work, add some brake fluid.

Then use the following method.

If the brake handle is still pinched very tightly at this time, it needs to be pinched by gravity. It may be that the air vent in the oil tank is blocked, so you can use a toothpick or other slightly thinner wooden strip to pass through the air vent in the oil tank.

Then pinch the brake handle and do not let go, find a screw cap of the front wheel, after removing, loosen the screw, the oil will flow out, the more you put the brake, the looser the brake, there is oil outflow you can screw it back, can not be completely put away, otherwise the brake effect is gone. Then put the brake handle fuel tank lid back on and screw it on.

2. Tightening

Brake discs. And there is a hex nut on the caliper, just tighten it with a hex wrench. If the above methods still cannot solve the tightness of the disc brake, it is recommended to go to the repair shop to find a professional maintenance master for repair.

Wheel locking: Under normal circumstances, the brake fluid is not good, the temperature is high in summer, and the wheels are locked due to the expansion of the brake oil, and it may also be that there is a breathable hole in the brake cylinder, and if it can't be exhausted, it will kill the lower pump piston, resulting in the wheel locking, which can be solved by loosening the screws and draining the oil.

Advantages of electric disc brakes:

External structure, good heat dissipation, less thermal decay, easy to control, suitable for electric motorcycles with high braking frequency.

and cool cars. Now you can see that there are many punched holes in the brake disc, which is to increase heat dissipation and optimize thermal attenuation. In order to make the braking of electric vehicles more linear, braking is easier and less labor-saving. The disadvantage is the friction of the relative hub brake.

The disc brake has less braking force and is relatively more expensive.

No, the disc brake of electric vehicles generally has the phenomenon of grinding discs, which is just a small magic disc and does not affect normal use, it doesn't matter. This is normal. The brake pads and discs of disc brakes are in slight contact.

1. When the disc brake is not in use, the disc grinding sound is emitted (do not press the brake).

The possible cause of the disc brake is that the disc brake (brake pad) rubs against the disc, the disc brake caliper is not parallel to the disc and the left and right positions of the caliper are biased to one side. How to check, please see from the top of the caliper whether the gap between the brake disc and the brake pad is parallel, whether the left and right clearance is the same, if there is a place to rub against the disc of course it will make a sound, but in this case the sound should not be very loud.

2. Make a sound when using the disc brake (press the brake).

The possible reasons for this, in addition to the above-mentioned uncalibrated sound, the surface of the disc will make sound if there are oil stains, dirt, friction powder, etc., and the other is that the strength of the disc is insufficient, and the vibration occurs when braking, especially if it is not calibrated, it will be more serious.

Tighten the brake cable, which generally has adjusting screws.

Poor brakes in EV disc brakes can be due to insufficient brake fluid or worn brake pads. Many of the larger electric vehicles use disc brakes. The principle is to use hydraulic oil to push the brake pads to rub against the stainless steel pads to brake.

To repair the disc brake, first check whether the brake fluid of the disc brake should be changed and whether the brake fluid leakage is good. If it doesn't leak, Panasonic oil drain screws will do. The second is to see if there are bubbles in the outflow oil, and if there are any, drain the oil until there are no bubbles; Finally, check whether there is pressure on the brake lever, and if there is no pressure, just open the air exhaust screw on the lower pump.

Tools required: Torx screwdriver.

1. Shiqing first inserts the plum screwdriver into the screw behind the disc brake.

2. After that, twist the screw after the disc brake outward to adjust the tightness of the brake, the brake will become tighter when you twist it inside, and the brake will become loose before the draft is tightened.

3. Turn the wheel after adjustment, listen to whether the wheel has any abnormal noise, and if there is abnormal noise, it means that the adjustment of the tightness is not appropriate.

4. Press the brake after that, and observe the angle of the brake, just to the handlebar for the best angle. That's it.