This EGR Valve fault code popped up and it caused a slight hesitation on acceleration which would make sense if the valve is open at the wrong time. The EGR funnels cooled exhaust coming from the EGR cooler into the intake system to cut down on emission levels. The code was 1896 EGR Valve Controller… Continue reading Cummins ISB Engine Code EGR Valve
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
If you told me we would be rebuilding one of our MaxxForce engines in six years I would have laughed and then went into total denial. There’s no way a school bus carrying 60 or so children operating 4 to 5 hours a day would be enough to wear out a diesel engine. I could… Continue reading Diesel Engine In Frame MaxxForce DT
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
Training Video: How To Check a Freightliner Cascadia Engine
This Cummins ISB diesel engine was running flawlessly for years. It’s a 2009 so seven years with a fairly decent service record is a bonus for the fleet. Eventually mechanical components do fail as most people know and this part was the VGT actuator. VGT stands for variable geometry turbocharger. I can tell you this…… Continue reading Cummins Code 2636 VGT Actuator
The one advantage to a belt driven air compressor is the minimal labour to change it out. In this school bus with a MaxxForce 7 diesel engine built by Navistar the Bendix air compressor failed after three years. The oil went as far as the air tanks so this was a severe level failure. The… Continue reading MaxxForce 7 Diesel Engine Air Compressor Failure
Servicing a diesel particulate filter (DPF) is part of the maintenance involved with an emission controlled diesel engine. Our shop has to periodically clean or send the DPF out to be cleaned depending on it’s condition. Sending it out for cleaning runs around 500.00 and there’s no guarantee it’s going to pass the flow test… Continue reading DPF Replacement MaxxForce 7
The ever important running check on our fleet of buses is never compromised after a repair or checking out a complaint. This means a basic visual and listening session. The road test might tell the story under certain conditions if there is a noise or power complaint. It will also show fluid leaks if any.… Continue reading Cummins ISC Running Check
As I start this post I can’t help thinking of all the experienced mechanics around the world who don’t share their mechanical fixes and failures. If 1% of mechanics around the world turned into bloggers the internet would be totally packed with great content. The ‘how to’ information online is the biggest draw to the… Continue reading DT Diesel Engine Rear Seal
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