You go to a truck driving school and learn how to drive a truck. If you "know" how to drive a truck, just imagine you're driving a 10 speed, but you skip over what would be 6th gear in a 10 speed.
EGR Valve
Four to nine MPG, depending on a number of factors. It's pretty much the same with any tractor trailer.
Number one eve valve
Caterpillar C series, Cummins IS series, or Volvo VED series.
There'll be a sticker inside the door frame on the driver's side with this information on it.
That depends on the length of the power unit and the weight of the trailer. With a Kenworth W900L with a 265" wheelbase and a 53' stepdeck trailer, I had an overall length of 77 feet. With a Volvo VNL730 and a 48' flatbed or stepdeck trailer, I was right at about 67 or 68 feet. Heavy haul combinations can be significantly longer, but 65 to 78 feet would be about the norm for an over-the-road regional or line haul tractor pulling a single trailer.
The more high end tractors are the Kenworth W900L, Peterbilt 379EXHD, Volvo VNL64T770 and VNL64T880, the International 9900ix, and the International Lone Star.
Yes, they do, if you're referring to tractors in the context as they're applied to tractor-trailer truck combinations. Volvo Cars and Volvo A.B. (the truck manufacturer) are no longer affiliated with each other, by the way. Volvo Cars was sold to Ford Motor Corporation, who I believe later sold it to Tata Motors.
Volvo dealership. Have fun with that... if you've never taken off a Volvo starter, you could be in for a lot of excitement.
Before you have to do any repairs, you have to diagnose exactly what's wrong with it. If it's malfunctioning, it could be for any number of reasons, and there's really no answer to this question without knowing what that is.
Semi tractor trailers can be purchased from the manufacturers of these vehicles, or second hand. Some of these manufacturers include Ford and Navistar International (in the United States and Canada), Mercedes-Benz, Volvo Trucks, and Renault Trucks (in Europe), Nissan Diesel and Mitsubishi Fuso Truck and Bus Corporation (Japan).
In the VNL/NH series, it's in the centre of the dash. You pull out the cupholders, and there'll be two screws exposed which you have to remove. Once that's done, you simply pull the panel up, and the fuse panel is exposed.