The Cummins ISC 250 horsepower diesel engine has performed well in our fleet. I can’t pinpoint any disastrous failures through the years. There were issues after several years but maintenance related…. namely emissions that needed cleaning up. The diesel in this video is a 2002 in one of our oldest buses that are going for… Continue reading Cummins ISC Diesel Engine
The factory programmed Thomas Bus light check is a handy system but it just tells you the lights are working. It does not tell you if the circuits from the switches are all working properly. For instance when the driver applies the brake pedal a signal is sent to relay power to the rear brake… Continue reading Thomas Bus Automatic Light Check
Mercedes engine codes…..which ones have been the most common and how did we go about fixing them. I will talk about 3 of the most common engines codes to date. The one code I have seen the most over the years has been the ‘2631 Turbo Boost Performance’ the most common code with these MBE… Continue reading Mercedes MBE 900 Diesel Engine Codes
This simple way of relocating dash switches is possible from multiplexing that sends inputs and outputs to modules controlling the components in the bus. Each dash switch has it’s own resistance that the module reads to send a command. In the video the horn and roof hatch motor switches were relocated. Once the ignition key… Continue reading Thomas C2 School Bus Multiplexing
Emissions gets a lot of attention these days especially when Donald Trump starts suggesting he wants to roll back emissions by freezing fuel efficiency standards at 2020 levels all the way through to 2026. This would reduce electric vehicle sales and keep people in gas powered vehicles. The freeze would increase oil consumption to half… Continue reading Mercedes Diesel Engine Emissions
This is a typical procedure for doing a regen on an International diesel engine. In this video it’s the MaxxForce DT. This engine model has been floating around as the top subject for my articles here on the Hub. I’ll tell you something about these diesel engines. They have issues so I write about them… Continue reading Parked Regen Using Navistar Software
Installing the cylinder head on an International MaxxForce DT diesel engine is intimidating for the novice but as I always say follow the instructions in the manual to the letter and you will never go wrong. The video specifically shows how to torque down the head bolts after the threads are coated with a light… Continue reading MaxxForce DT Cylinder Head Installation
Once the cylinder liners were secured and measured for protrusion the new pistons were then installed with new bearings and rings. This is where care (as always) needs to be taken especially when installing the pistons. The rings need to be turned to the correct position 120 degrees apart from each other so the open… Continue reading MaxxForce DT Engine Rebuild Progress Report
This is one of the many important steps along the way towards rebuilding our MaxxForce DT diesel engine. If you’re following posts here you’ll notice a steady flow of articles regarding these engine models. As I have mentioned before there’s a lot of flaws in engineering that is causing premature wear and necessary in-frames to… Continue reading MaxxForce DT Cylinder Liner Protrusion
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