How to Stop Your Brakes from Squeaking

Video: We’ve all had breaks that squeak. Watch this video to find out how to end this problem forever.

Top Brake Questions Answered

The No. 1 job of truck brakes is safety; within that application, there’s more than one way to stop a truck. Drums have been the brake of choice for many trucks, but air disc brakes (ADBs) continue to gain popularity in nearly all heavy-duty on-road applications. “Current [ADB] market penetration is in the 12% to… Continue reading Top Brake Questions Answered

Wheel-End Maintenance Saves Tires, Brakes

Bearing adjustment is a tricky procedure. Unless you’re using preset hubs, you should check to be sure your techs are doing the job properly. The difference between good and bad in the wheel bearing world is a very fine line — about the width of a couple of human hairs to be imprecise. That’s not… Continue reading Wheel-End Maintenance Saves Tires, Brakes

School Bus Pusher Front Brakes

Brake Jobs are a common repair in our fleet and the video shows a steering axle brake job being done on an HDX Thomas pusher bus. They usually last several years since there is a lighter load on the front axle compared to the drive axle which supports the engine and transmission. These shoes are… Continue reading School Bus Pusher Front Brakes

School Bus Brake Job Machining Tools

Machining Brake Shoes Machining shoes and drums on our fleet of buses was a standard procedure in our shop for many years. The brake job has now evolved into a remove and replace operation changing both drums, shoes and hardware. The reason for this is the time factor ….. the entire machining process on the… Continue reading School Bus Brake Job Machining Tools

Road Test Cummins VGT Exhaust Brake

The Cummins VGT Exhaust Brake The ISB diesel engines we have been running since 2009 have been very dependable. The only failures have been 2 turbochargers that were pumping oil. I’m still praising the VGT (variable geometry turbocharger) because the failure rate is low and the up time far exceeds any inconvenience we had to… Continue reading Road Test Cummins VGT Exhaust Brake

Air Operated Disc Brakes

Are Air Disc Brakes The Future Of School Bus Braking Systems? After looking at the pros and cons of both foundation drum brakes and air disc brakes I believe the latter will become more popular. How fast it becomes a mainstay when ordering school buses is hard to say mainly because of the cost. According… Continue reading Air Operated Disc Brakes

Mercedes MBE 900 Engine Brake Repair

Mercedes Engine Brake Repair One of our sports run buses has an engine hold back problem when coasting down hill. The Mercedes MBE 900 has an exhaust brake and an engine brake. Used together they really work well and you can feel it while driving. The engine brake is called a “Constant Throttle Valve” or… Continue reading Mercedes MBE 900 Engine Brake Repair

Basic Air Brake Theory On A School Bus

Understanding The Basics Behind Air Brakes The video below does an excellent job describing how air brakes work. If you are not familiar with the theory behind air brake systems the video will definitely help you understand the basics. Air brakes have come a long way and now they are engineered using ABS technology. With… Continue reading Basic Air Brake Theory On A School Bus

Air Brake Auto Slack Adjusters

Automatic slack adjusters keep a constant clearance between your brake linings and brake drum, approximately 25 thousands of an inch. The push rod travel stays at one and a half inches when the slack adjusters are working properly.They can be adjusted manually (only during installation) and automatically by the operator: by performing a full brake… Continue reading Air Brake Auto Slack Adjusters