Thursday, June 28, 2007
Starting Up A Thomas School Bus With A Mercedes MBE 900 Diesel Engine
This a quick clip starting up a Mercedes Diesel Engine in one of our Thomas C2 Model School Buses. I'm using my digital camera and have not perfected the video techniques yet [I'm no Steven Spielberg]
The C2 has a much higher ceiling and greater visibility which our operators appreciate. The 3 position dual engine brake is very popular with Drivers [and Mechanics, since it will cut down on brake jobs.]
The Multi-plex wiring is very unique on the C2, to give you an idea: dash switches can be inter-changed anywhere on the dash. Each switch has a different resistance amount so the computer can read that resistance and know which circuit is activated.
The Thomas C2 also has a programmed pre-trip. With the flashers on and the signal switch pulled up, the ignition switch has to be cycled to the accessory side 3 times and then left on accessory. When the signal switch is released from the upward position the operator can do a walk-around and check all the regular lights and the loading lights. When the electric horn sounds the check is completed.