Our MaxxForce DT engine in-frame is rolling along with new main bearings being replaced (rolled in). The Mechanic has to roll in the bearings on the top half since the crankshaft is not being removed. The engine rebuild manual is as important as a bible in church. You’re going to be lost without it. Guessing… Continue reading MaxxForce DT In-Frame Update
Just another step in the rebuild process of our MaxxForce DT engine. The head has been removed along with the oil pan which required the front engine mount to be removed. The steering axle is in the way so once the oil pan retainers are removed and oil pan is let down it hits the… Continue reading International MaxxForce DT Rebuild Follow Up
This is a job that is essential due to coolant leaking into the engine oil and vice versa coolant escaping into the combustion chamber. The obvious clue to this issue was an operator complaint of coolant loss. Since we could not detect an external leak all fingers pointed to the EGR cooler. Since this Mercedes… Continue reading EGR Cooler MBE 900 Mercedes Diesel Engine
Another rebuild not uncommon with the DT MaxxForce. We have found this out in the last couple of years. There is so much exhaust going through the intake system and out the exhaust the second time has caused premature wear beyond belief. Navistar decided to tackle the 2010 emissions requirements set out by the EPA… Continue reading MaxxForce DT Diesel Engine Overhaul
Did you watch this video? Look at all of that smoke coming out of the oil fill tube. That is severe blowby caused by compression escaping by the piston rings and getting into the crankcase creating pressure. This International MaxxForce DT is a 2011 diesel engine that needs some rebuilding to get it back to… Continue reading International MaxxForce DT Diesel Engine Worn Out Analysis
The eight 2013 MaxxForce 7 diesel engines we purchased for our fleet have proven to be a royal pain in the …well you know how that phrase ends. After five years half of the diesel engines needed to be replaced due to being totally worn out. All of them were repaired / replaced under warranty… Continue reading 2013 MaxxForce 7 Diesel Engine Performance Update
Once the engine block is cracked on any engine you’re out of luck. Can it be fixed? I wouldn’t want to take a chance because of the heat and pressures that goes on during normal operation. In our case the cost in U.S. dollars would have climbed close to $50,000 dollars Canadian. The shipping from… Continue reading Scrapping 2008 Mercedes Diesel Engine Cracked Block
In 2005 Thomas bus and Freightliner came up with a new model called the C2 which is a conventional school bus with new technology implementing smart switches and multiplexing to help components and modules communicate faster and more efficiently. The smart switch is a resistor that has it’s own separate resistance reading. When the smart… Continue reading Thomas School Bus Smart Switches and Multiplexing
In 2013 we purchased eight International school buses with the MaxxForce 7 V-8 diesel engine. Knowing now what we didn’t know then would have effected our decision to go with these models. Out of the 8 engines 4 of them had to be replaced due to excessive low compression. There is no way to rebuild… Continue reading MaxxForce 7 Diesel Engine Compression In Coolant Repairs
What would we do without diagnostic software? Absolutely nothing…well nothing productive anyways. It would be the blind leading the blind not knowing what to do or where to go next. Sure you could start guessing and changing parts …expensive parts in most cases but not knowing for sure if what you’re doing is going to… Continue reading Mercedes Diesel Engine Diagnostic Software
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