If you have ever worked on a diesel engine with emissions you’ll recognize the part featured in the photo. It’s a sooted up DPF (diesel particulate filter) cartridge. This one was giving us some trouble with an engine code that pops up when the turbo boost is not at the proper level. The cause of… Continue reading Diesel Engine DPF Replacement
So you’ve got a job interview and your nervous thinking what if they ask me a question I don’t know the answer to? Everyone has been through that situation and I found an excellent resource that has 101 questions with answers that an interviewer could possibly ask you. I’m sure you would get a few… Continue reading Tough Job Interview Questions
Keeping a school bus fleet maintained is important but making sure they start in the cold weather is a priority. All of our buses come with a 1500 watt block heater from the factory. Since 2006 we have been ordering them with diesel coolant heaters that run on diesel from the fuel tank (They use… Continue reading School Bus Fleet Winterizing
We recently found the problem with the no ignition power on one of our pusher school buses. The details leading up to the solution were documented in a previous post. The circuit board has definitely failed because of a bad diode internally that is allowing battery voltage to ground out. This is a dead short… Continue reading School Bus Electrical Information
In the video you heard the fuse that was popping off every few seconds. That is a short circuit or more commonly called a ‘dead short’ directly to ground. The fuse resets itself so it’s handy to have that plugged in so we can check wiring exposed around the printed circuit board where all this… Continue reading School Bus Short Circuit
In 2012 we acquired seven Navistar school buses with Maxxforce 7 diesel engines. They have been fairly reliable since then with a few glitches here and there. I think it’s important to share some of our experiences with other Maxxforce 7 owners. 2012 was the last year that Navistar could sell their own diesel engines… Continue reading MaxxForce 7 Diesel Engine Overview
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 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
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
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
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