2007 International School Bus Parked Regen

Well it started out alright until I found out the soot level in the diesel particulate filter was at a level 5 indicated in the software readings. That is the maximum level which means the chances of cooking out the soot to conservative levels is probably not going to happen. In fact the regen never… Continue reading 2007 International School Bus Parked Regen

School Bus Garage January Highlights

School bus repairs is never boring because the variety never ends. I will go through each of the featured jobs in this video and do an over view including the solution which is the best part of any mechanical repair. The first part is an injector failure or I should say injector sealing washer failure… Continue reading School Bus Garage January Highlights

MaxxForce DT Removing Pistons and Liners

Our In Frame has begun and #6 piston and liner has shown the damage caused by coolant contamination in the oil. If left too long the coolant will wash away the oil lubrication between the piston and piston liner. The terms for the piston cylinder for diesel engines that are able to be rebuilt in… Continue reading MaxxForce DT Removing Pistons and Liners

DT Diesel Engine InFrame Parts Inspection

This is an important step with any rebuild. Cleaning and inspection must be carried out with care so nothing gets missed. The cylinder head was sent out to a local machine shop for testing and inspection. They needed the injectors to block the fuel galleries to allow for a pressure test. Everything including injector sleeves,… Continue reading DT Diesel Engine InFrame Parts Inspection

MaxxForce DT Diesel Engine EGR Cooler Failure

As you can see the EGR cooler from this Navistar DT MaxxForce engine is massive and it weighs I’m guessing around 50 pounds. Why is it so large? Well the main reason was to circulate more cooled exhaust gases to the air intake system and reduce emissions to meet the demanding emission standards set by… Continue reading MaxxForce DT Diesel Engine EGR Cooler Failure