Page 114 – Mechanics Hub

The diesel engine in the video is a 2007 Mercedes MBE 900 and it was shutting down on the road unexpectedly. The operator would be driving under several different conditions when it happened. We found the harness where the fault wire was located. Of course the engine did not die for us but you can… Continue reading Mercedes Diesel Engine Wiring Problem

Fido

Ultrasound

Adjusting a Bendix Air Governor

Adjusting the Bendix D2 governor just takes a 7/16 wrench and a screwdriver. The unloading pressure for the typical air brake system is 120 psi but it can be higher up to 130 psi without a problem. Anywhere in the middle is good in my book. This is an easy adjustment as you can see… Continue reading Adjusting a Bendix Air Governor

A Little Help

School Bus Brake Job Machining Tools

Machining Brake Shoes Machining shoes and drums on our fleet of buses was a standard procedure in our shop for many years. The brake job has now evolved into a remove and replace operation changing both drums, shoes and hardware. The reason for this is the time factor ….. the entire machining process on the… Continue reading School Bus Brake Job Machining Tools

Separation Anxiety

School Bus Wiring Problem No Start

Thomas School Bus Wiring Troubleshooting The pusher bus featured in the video is a 2000 Thomas Pusher (rear engine) bus that would not start from the ignition key. The wiring diagram indicated that the purple with a white stripe numbered #4 runs from the ignition key start terminal directly to a terminal board connection at… Continue reading School Bus Wiring Problem No Start