How to release the parking brake when the air supply is cut off?
1 Answers
Release the brake mechanically. There is a nut and screw on the sub-pump. Under normal circumstances, the screw is retracted inside. Use a wrench to turn the nut. Pull the screw completely out to release the brake. If the rear brake pump and electronic handbrake are integrated, this situation may indicate a damaged handbrake motor. Cover the pipe opening with copper sheet and then tighten the joint to release the air cut-off brake lock.