Keeping an eye on your brakes helps keep you on the road, and making sure your technician checks all the nooks and crannies within the brake system is key. A visual inspection is a good place to start and should cover a lot of ground. The mounting, brake hoses and cables should all be secure. Check for loose or broken air hoses and leaks and make sure your vent holes are not covered with anything. Also, make sure your general safety checks match any applicable laws. There are a few extra steps one should take after visually making sure things are on the up and up. Check the slack adjusters and check and lubricate the clevis pins. A good rule of thumb is to have a fully comprehensive preventative maintenance program including all means necessary for making sure your brakes are in excellent condition. Click the link below to learn more about this.