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I believe that the friends who use the car often know that the car will definitely use the parking brake as long as it is parked. Because the driver leaves the vehicle, if there is no hand brake, the vehicle may slide and may cause an accident. However, we must remind the majority of riders that handbrake is not a universal insurance, because the handbrake's performance will slowly decline with the increase in the number of uses. Sometimes, the handbrake has been pulled up, but the accident has occurred because of the failure of the brake system. Therefore, the majority of riders should regularly carry out proper maintenance and inspection of the car's handbrake. The following editors of Shaoxing Automobile Network will share with you the notes on the normal maintenance and inspection of handbrake.
Determine the working position of the handbrake handle
Like the foot brake pedal, the handbrake handle also has a pulling stroke. Normally, when the handle is lifted to 70% of the full stroke, the handbrake system should be in the normal braking position, so before checking the handbrake brake force, you should first find out the 70% working point. This work point can be Count ratchets to determine. The car can be parked in a relatively quiet place, slowly pull up the handbrake, pull the rattling sound of several ratchets until the handle is pulled to the end. Then calculate the 70% position of the total number of sounds, this position is the effective working point of the handbrake handle.
Check the hand brake mechanism performance
Put the car on a slope with a large gradient and a good road condition (preferably an asphalt road), slam the brakes and hang the neutral gear (if it is an automatic transmission, hang it in the N range) and pull the handbrake handle to the working point just determined. position. Then slowly release the brake pedal. If the car does not slip, it means that the handbrake is effective. Uphill and downhill should be done once.
High-speed driving without a brake
There are many owners who think that if the brake system fails, you can pull the handbrake to slow down. In fact, this approach is very dangerous. Because the handbrake mechanism is not precise, the braking forces on the left and right sides are unevenly distributed. When the handbrake is pulled at a high speed, it is easy to cause the rear wheels of one side to lock up and slip sideways. The correct way is to slow down through the downshift and pull the handbrake to stop the car when the speed is low.
Test handbrake sensitivity
In addition to braking performance, the handbrake sensitivity should also be checked, which is especially important for starting a slope. Slowly on a sloped road, slowly lift the handbrake handle and feel the handle's sensitivity and juncture. This inspection method will cause the handbrake mechanism to wear, so the number of inspections should not be too much. During the inspection process, if it is found that the braking performance or sensitivity of the handbrake is not ideal, it can usually be solved by adjusting the operating cable of the handbrake. At the connection between the bottom of the handbrake handle and the cable (usually covered by the interior trim) there is an adjustable compensation mechanism. With a wrench to loosen the lock nut, the length of the brake cable can be stretched. Some car adjustment mechanisms may be located at the bottom of the vehicle. If adjustments are inconvenient, they should be handled by professional maintenance personnel.