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The 2 Most Important Jobs In a Fleet – Troubleshooting and Roadtesting

The Importance of Troubleshooting and Road Testing As a fleet operation that transports students it’s our responsibility to make sure all work is done properly and the vehicle is safe to go back out on the road. Also important is to road test buses before and after the repair to take care of driver concerns… Continue reading The 2 Most Important Jobs In a Fleet – Troubleshooting and Roadtesting

Not in the Manual

Mercedes MBE 900 Diesel Engine Emission Codes

Exhaust Temperature “Too High” Engine Code With emission systems their main purpose is to remove soot and NOx (nitrogen oxide) from the engine exhaust system. In the process of doing this the DPF (diesel particulate filter) gets the worst of the tar and gum like substance that accumulates on the filter.

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

Merry Christmas

Cummins ISC Diesel Engine Repair

After the Cummins C series (Bosch fuel injection) diesel engines did their time in our fleet we were introduced to the ISC electronic model. A high pressure fuel accumulator supplied the injectors using a distributor pump. There were a few of these “CAPS” pumps that failed but that was over a long period of time.… Continue reading Cummins ISC Diesel Engine Repair

Today at the Bus Garage

Take The Video Tour Of Our Garage Below I’ve added a video of a quick tour of the garage. The wash bay is the new home to our bulk oil tanks. They are replacing the originals due to age and size of them taking up room in the adjacent service bay. Watch the video for… Continue reading Today at the Bus Garage

Multiplexing On A School Bus

An Example Of A Multiplex Wiring Schematic In the Video below I’m checking Out A Multi-Plex Wiring Circuit On A C2 School Bus. You will see the bulk head module (photo above). It sends and receives inputs and outputs and controls other modules communicating through the J1939 wrg. (You will find more details below) The… Continue reading Multiplexing On A School Bus