Adjusting the Bendix D2 governor just takes a 7/16 wrench and a screwdriver. The unloading pressure for the typical air brake system is 120 psi but it can be higher up to 130 psi without a problem. Anywhere in the middle is good in my book. This is an easy adjustment as you can see… Continue reading Adjusting a Bendix Air Governor
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
Thomas School Bus Wiring Troubleshooting The pusher bus featured in the video is a 2000 Thomas Pusher (rear engine) bus that would not start from the ignition key. The wiring diagram indicated that the purple with a white stripe numbered #4 runs from the ignition key start terminal directly to a terminal board connection at… Continue reading School Bus Wiring Problem No Start
Preventive Maintenance Practices The video explains the importance of seeing dirty oil in the wheel hub reservoir and the steps that need to be taken. This is all part of preventive maintenance when something suspicious is spotted and the only option is to investigate. The gear oil is a lot clearer when it’s right out… Continue reading Preventive Maintenance – Wheel Bearings
Commercial Transport Mechanic Notes This post is for you young guys just getting started in the commercial transport trade who have not had a lot of hands on training. I’ve had a lot of training and experience in this field and mixed into that is a lot of failures as well. You will have to… Continue reading Commercial Transport Mechanic Insider Advice
Hiring A New Mechanic We recently hired a new mechanic and I want to share with you the process we went through. The position was for a red seal commercial transport mechanic with a Class 2 driver’s licence with air and a commercial vehicle inspection certificate. We also ask for 5 years experience in the… Continue reading Interviewing For A Commercial Transport Mechanic
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
Garage Tour Notes It wasn’t too long ago that we had our shop totally done over by the painting crew. It doesn’t take long for a bunch of greasy mechanics to get it back to the old look…at floor level anyways. All in all the garage we have is very adequate to suit our needs.… Continue reading School Bus Garage Tour
Diesel Engine Maintenance When it comes to maintenance in a fleet the diesel engine is one of the most important component of all. The engine needs close attention since it costs the most to repair compared to the transmission, differential and brakes. The following is some insight into our fleet maintenance program on the best… Continue reading Shop Talk – Fleet Servicing Insights
Installing Rear Drive Axle With Air Operated Differential Lock When we started working on this 2008 school bus it was supposed to be a basic brake job on the rear axle. As it turned out the passenger side wheel seal was leaking so the hub assembly needed to be removed. The video shows you how… Continue reading C2 School Bus Mechanic Tip – Axle Installation
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