Articles Archives

Mechanics Hub Members Tour

Mechanics Hub Membership Site – Overview This is a quick video tour of the Mechanics Hub membership website. I’ve been a member since 2009 and it’s a great community of Heavy Duty and Automotive Mechanics in all industries. Maizis and Miller who produced the Mechanics Hub membership site is a company that finds jobs for… Continue reading Mechanics Hub Members Tour

Bendix AD9 Air Dryer Servicing

Bendix AD9 Air Dryer Servicing Servicing the Bendix AD9 Air Dryer is straight forward and an essential part of the air brake system. School buses use the 121 air brake system which uses anti-compounding valves built in to resist brake component damage. Neglecting the maintenance of the air dryer will cause huge problems down the… Continue reading Bendix AD9 Air Dryer Servicing

Removing Cab 2005 Chevy 2500 4X4 Duramax Diesel Engine

I visited the shop of a friend of mine who I work with who was in the process of replacing the heads and injectors on a 2005 Chevy 2500 4X4 with a Duramax diesel engine. I’ve always heard you need to remove the cab to do any kind of major engine work so it was… Continue reading Removing Cab 2005 Chevy 2500 4X4 Duramax Diesel Engine

Mercedes MBE 900 Testing Injectors – Pusher School Bus

Working On Non Emission Diesel Engines This Mercedes model is a 2004 so there are no emission components. These models are very reliable and the only trouble we’ve had is the overflow valve located between #5 and #6 cylinder which regulates the return fuel back to the tank. If you experience a power problem the… Continue reading Mercedes MBE 900 Testing Injectors – Pusher School Bus

International Conventional School Bus

International CE School Buses Compatible With Any Fleet Our fleet has expanded by 17 buses over the last three years with the introduction of International CE conventional models. The first 2 years they came with DT466 MaxxForce engines and this year we ordered them with the MaxxForce 7 engines. So far both engines have… Continue reading International Conventional School Bus

School Bus Transmission Oil In Coolant Repair

Cooling System Disassembly Remove Radiator To improve access to the radiator we removed the hood, charge air cooler and radiator assy. Before installing a new radiator the cooling system needs to be flushed out properly. The local rad repair shop recommended a low suds dishwasher detergent. Calgonite for instance would work in this case.… Continue reading School Bus Transmission Oil In Coolant Repair

School Bus Cummins ISB Head Gasket repair

Cummins ISB Head Gasket The Cummins 24 valve ISB in the video requires a new head gasket. This 2003 model year head gasket was leaking from the right front corner which is a common problem with these models. The head bolts have to be checked for stretch with a gauge that comes with the head… Continue reading School Bus Cummins ISB Head Gasket repair

School Bus Allison 3000 Automatic Transmission Fault Code Demo

Setting Up A Transmission Code for Output Speed Sensor This is an Allison 3000 Series Automatic Transmission in a 1997 Thomas Pusher School Bus. I did a demo fault in the video to show you what happens when a code develops ….which in this case is a output speed sensor code. I made this code… Continue reading School Bus Allison 3000 Automatic Transmission Fault Code Demo

Cummins ISB Engine Code Water In Fuel

I found out some interesting information about this code involving the fuel / water separator. The wiring for both the coolant sensor and fuel / water sensor namely the ground is shared. When the code for the water in fuel sensor popped up it also triggered an engine coolant temperature code to flash as well.… Continue reading Cummins ISB Engine Code Water In Fuel

Snap On Video Scope

Featured in this video is one of my favourite specialty tools. The Snap-On Video Scope is extremely handy and really helps out when you can’t see certain areas on an engine or inside a cab. This tool has several uses: -Internal engine diagnosis -under-dash, inside door panels -under-hood -behind engine block -inside transmission housings -any… Continue reading Snap On Video Scope