I believe that friends who use cars often know that the car will definitely use the handbrake as long as the car is in use. Because the driver leaves the vehicle, if there is no hand brake, the vehicle may slip and may cause an accident. However, it is necessary to remind the majority of riders that the handbrake is not a universal insurance, because the performance of the handbrake will slowly decrease as the number of uses increases. Sometimes, the handbrake has been pulled up, but the accident caused the failure of the brake system. Therefore, the majority of riders should regularly maintain and check the hand brakes of the car. Below Shaoxing Auto Network Editor and everyone to share the precautions for the normal maintenance inspection of the handbrake.
Determining the working position of the handbrake handle
Like the pedal of the foot brake, the handbrake handle also has a pulling stroke. Usually, when the handle is pulled to 70% of the entire stroke, the handbrake system should be in the normal braking position, so before checking the braking force of the handbrake, you should first find this 70% working point, this working point can pass Count the ratchet sound to determine. You can park your car in a quiet place, slowly pull up the handbrake, and pull the ratchet of the ratchet 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 performance of the handbrake mechanism
Drive the car to the slope with a large slope and good road surface (preferably asphalt road), step on the brakes, and hang the neutral gear (if it is automatic transmission) Then hang in the N block), pull the handbrake handle to the working point just determined. Then slowly release the brake pedal, if the car does not slip, it shows that the hand brake works well. Uphill and downhill should be done once.
High-speed driving without hand brakes
There are many car owners who think that in the event of a brake system failure, they can pull the handbrake to slow down. In fact, this practice is very dangerous. Since the hand brake mechanism is not precise, the braking force on the left and right sides is unevenly distributed. When the hand brake is pulled at a high speed, it is easy to lock the rear wheel on one side and slip. The correct way is to slow down by downshifting, and when the speed is very low, pull the handbrake to stop the car.
Sensitivity of the test hand brake
In addition to the braking performance, the sensitivity of the handbrake should also be checked, which is especially important for the start of the slope. Slowly drive on a road with no slope, slowly lift the handle of the handbrake and feel the sensitivity and joint of the handle. This type of inspection will cause the handbrake mechanism to wear out, so the number of inspections should not be too much. During the inspection process, if the braking performance or sensitivity of the handbrake is found to be unsatisfactory, it can usually be solved by adjusting the operating cable of the handbrake. At the junction of the bottom of the handbrake handle and the cable (usually covered by the interior trim) there is an adjustable compensating mechanism that can be used to stretch the length of the brake cable by loosening the lock nut with a wrench. Some car’s adjustment mechanism is located at the bottom of the car. If it is not convenient to adjust, it should be handled by professional maintenance personnel.