Allison Automatic Transmission Module

The Allison Automatic transmission module I’m talking about in the video is for a 2500 series model we’re running in all of our newer conventional buses. The older units have the 3000 series transmissions and we found that they were over and above what we needed for our fleet. Not only was it a cost… Continue reading Allison Automatic Transmission Module

School Bus Steering Repair

Every time we do a service within our bus fleet it always goes on the hoist and is checked thoroughly front to back. The average time for a service varies with which interval we’re doing from a 5,000 to a 15,000 kilometer service. The hoist gives us a chance to check the wheels, bearings, brakes… Continue reading School Bus Steering Repair

School Bus Repairs

School bus repairs in the garage are different every day. The mechanic has to be prepared to diagnose and repair problems in various categories like electrical, air brakes, steering, engines and emissions. I’ve seen problems happen in groups of three and within a tight time frame. This isn’t surprising since every group of buses purchased… Continue reading School Bus Repairs

Using Freightliner Parts Software

There are times I don’t want to phone a dealer partsman and wait for them to take a serial number and look up a part. Having the Accessfreightliner website at your finger tips is a huge advantage to finding part numbers and technical information for all freightliner chassis vehicles. In our case it’s the C2 school… Continue reading Using Freightliner Parts Software

EGR Valve Troubleshooting

We’re looking at an EGR valve on a Mercedes MBE 900 diesel engine. It isn’t working properly as shown in the video using the Mercedes DDDL 7 diagnostic software to check it out. By pulling it off of the intake it’s easy to see the valve open and close. Commanding the EGR with the software… Continue reading EGR Valve Troubleshooting

Mercedes Diesel Engine Exhaust Leak

This particular Mercedes diesel engine model is a 2008 and emission controlled. I can say for sure that any exhaust leaks on an emission controlled engine will create not only an engine code but also derated performance. Once the code shows it’s ugly icon on the dash nothing really feels different until over time it… Continue reading Mercedes Diesel Engine Exhaust Leak

20 Year Anniversary and Mechanic Memories

I thought now would be a good time to celebrate my 20th year as a school bus fleet mechanic. I first thought is “how times have changed” it’s a familiar statement but so true from my perspective. 20 years ago I was working on hard wired diesel engines and buses without any high tech troubleshooting… Continue reading 20 Year Anniversary and Mechanic Memories

School Bus Preventive Maintenance

School bus preventive maintenance let me count the ways. There are many approaches a mechanic can take to looking after the modern day school bus and the old models as well. Technology has changed and so has procedures involved with making sure unexpected failures are held to a minimum. PM steps are small to large… Continue reading School Bus Preventive Maintenance

School Bus Electrical Fault

This is the first time I’ve ever seen a problem like this on an HDX pusher school bus model. The Thomas HDX pusher bus has printed circuit boards that relay all of the supply power to run the lights, heater motors and operating circuits. There are 3 circuit boards in total and troubleshooting requires a… Continue reading School Bus Electrical Fault

The School Bus Mechanic Life

The video shows one of our mechanics grinding away at a rear suspension. This is one of the jobs you may be faced with when you become a commercial transport / school bus fleet mechanic. If you want an interesting job with lots of variety getting into this trade is the way to go. I… Continue reading The School Bus Mechanic Life