Should the handbrake be released or pulled up when parking?
1 Answers
When parking, the handbrake should be pulled up, and it needs to be released when starting the vehicle. The handbrake, also known as an auxiliary brake, operates differently from the main braking system. It uses a steel cable connected to the rear brake shoes to apply braking force to the vehicle. Prolonged use of the handbrake can cause the steel cable to undergo plastic deformation, which is irreversible and reduces its effectiveness over time, also increasing the handbrake's travel distance. When the handbrake is engaged, a hydraulic auxiliary cylinder is activated, which moves the main hydraulic cylinder located under the vehicle. This action then triggers the air valve, and once the air valve is engaged, it applies braking force to the driveshaft. The handbrake only brakes the driveshaft. After the driveshaft is braked, standard trucks use a handbrake lever with a steel cable to maintain long-term braking, while more advanced trucks employ electronic control systems.