School Bus Multiplexing

Since multiplexing is a main stay in highway trucks I want to go through it in more detail so if you’re a mechanic in the multiplexing world you will see more of the benefits that this new type of wiring communication system brings. The video was a quick view of what smart switches look like… Continue reading School Bus Multiplexing

Changing School Bus Programming

Changing the programming on one of our school buses from the end user side hasn’t happened until today with the help of the Freightliner dealer and Thomas Built Buses. For troubleshooting and service information we have the accessfreightliner website which is a remote website that can be logged on to using any one of our… Continue reading Changing School Bus Programming

School Bus Auto Chains

Automatic chains have proven themselves many times over in our fleet operation. With the flick of a switch they automatically apply themselves against the inner dual tire sidewall which rotates the chain wheel to throw the chains under the tire tread. The company that manufactures these auto chains is called ‘Onspot of North America’. They… Continue reading School Bus Auto Chains

School Bus Hendrickson Suspension

Twenty years ago the suspension on a school bus was solid leaf springs which worked well but since the introduction of air bag suspension the ride has greatly improved. The rear suspension on the bus in the video is manufactured by Hendrickson International who have been in the suspension business for many decades. I can… Continue reading School Bus Hendrickson Suspension

Diesel Engine Regen

The parked regeneration is a regular procedure for diesel engines that get to the point where passive regens are not keeping the DPF (diesel particulate filter) clean. The differential pressure sensors will signal the motor control module MCM to alert the driver with an amber light on the dash that a parked regen is required.… Continue reading Diesel Engine Regen

Mechanic Road Test and Service Call Tips

The road test is one of the most important steps to take when troubleshooting a mechanical problem on any vehicle. Thousands of mechanics will agree with this statement. When you listen to a complaint from the driver of the vehicle in question you may not get the whole story. I like to find out as… Continue reading Mechanic Road Test and Service Call Tips

School Bus Body Shop

I haven’t said anything about our onsite body shop so I think now is the time to tell you all about it. We have a journeyman body man who does everything related to school buses. He replaces and repairs body panels, repairs and replaces seat covers, replaces damaged and fogged glass and paints where required… Continue reading School Bus Body Shop

Air Brakes System with ABS

Air brake abs or antilock brake systems are similar to automotive in principle with wheel sensors, tone wheels and a control module. The difference of course is air brakes compared to hydraulic brakes. On our newer school buses there is an off road switch on the dash to engage the ABS and reduce wheel spin. The results using this system during winter… Continue reading Air Brakes System with ABS

Mercedes Diesel Engine Code 2631

This is another Mercedes diesel engine MBE 900 post. These engines are keeping us busy. Just when we get one code repaired another one comes along. Tonight while working on the engine in this video one of the drivers walked in to the shop and reported an engine code on his dash. It’s another MBE 900 that… Continue reading Mercedes Diesel Engine Code 2631

Cummins ISB Diesel Engine Code Repair

The Cummins ISB diesel engine is the most reliable diesel engine in the fleet. However they are not invincible and can act up once in a while. The operator came in and told us there was an amber light on the dash. Most descriptions of the issue are pretty good but it is a habit… Continue reading Cummins ISB Diesel Engine Code Repair