Page 133 – Mechanics Hub

These are photos I’ve been taking throughout the years at our school bus garage. As you may have noticed some of the technology is older. The Kysor Engine shutdown system was in our mid 1990 models. They served their purpose and was very basic with a coolant temperature sensor and oil pressure sensor hard wired… Continue reading School Bus Shop Photos

Swing Mechanic

School Bus Module and Mercedes Diesel Engine Code Problem

Voltage Leakage with Interface Modules Another problem we are dealing with is the VIM vehicle interface modules especially on the HDX Thomas pusher buses. They are exposed to the elements and attract corrosion and since they have cooling vents to the atmosphere this causes voltage to creep over and energize other circuits. On one of… Continue reading School Bus Module and Mercedes Diesel Engine Code Problem

Twerking Mechanic

Where the Rubber Meets the Road: Tire Myths Debunked

As one of the most commonly replaced parts on a car, vehicle tires represent a $23 billion industry, according to IbisWorld.com. Everyone seems to have some kind of advice about proper tire care and replacement, but it can be hard to separate the facts from fiction. Check out these four tire myths: Only Big Companies… Continue reading Where the Rubber Meets the Road: Tire Myths Debunked

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Cummins Diesel Aftertreatment System Video

I found this animated video of the Cummins Diesel Aftertreatment system commonly known as SCR (Selective Catalytic Reduction). I need to get familiar with this system since we have been buying International buses since 2010. Navistar was only using the EGR to reduce emissions to 2010 standards along with buying credits so they did not… Continue reading Cummins Diesel Aftertreatment System Video