Blog

Freight slows, rates hold in Nov

Year-over-year, van rates were up 2.7 percent while spot rates have dropped for both flatbed (down 5.5 percent) and reefer (down 0.5 percent). Intermodal traffic in November totaled 1,007,549 containers and trailers, up 7.8 percent (73,004 units) compared with November 2012, the Association of American Railroads reports. The weekly average…

Suspension Systems

The suspension is one of the most important parts of a car. All cars have some sort of suspension system, even golf carts. A suspension has three major jobs: to keep the car’s frame from dragging on the ground, to control body movement during cornering and to control wheel movement…

Operation and Usage of Hydraulic Valves

The hydraulic valve is like a traffic control signal at a four-way intersection. It might allow east and westbound traffic lanes to continuously flow until the light changes, which would permit the north or southbound lanes to flow. The east and westbound traffic flow represents circulating hydraulic fluid. The hydraulic…

Gear Pumps Maintenance

A gear pump is a rotary pump consisting of two meshing gear wheels in a suitable casing whose contra-rotation entrains the fluid on one side and discharges it on the other. It is a positive displacement pump that uses two meshing gears to pump both low and high viscosity liquids….

Gear Pumps

Gear pumps are used to pump oil, or other thick liquids. The separating gears on the input side of the pump creates a vacuum which pulls in the liquid, which is then carried by the gears to the output side of the pump, where the meshing of the gears pushes…

Mudguards and Mud Flaps

Mud guards, mud flaps or splash guards are small plastic or rubber flaps designed to fit in the wheel well of a vehicle and prevent dirt and debris from getting on the side of the vehicle and damaging the paint. Mud flaps can be particularly useful in wet and muddy…

Brake Air Chambers

Air brake chambers are the primary part of the air brake system in highway and long-haul 18-wheelers. While the front and rear brake chambers of a vehicle are slightly different, they function in conjunction with a set of oversize drum-brakes, taking the place of a normal breaking system’s hydraulic assist…

Building and Installing Tow Hitches

A tow hitch gives you the capability to hook up quickly to a trailer or other piece of equipment designed for you to pull behind your vehicle and get on the road. You can build your own tow hitch with a few simple materials and brackets that can be found…

Trailer Hitches Particularization

The towing industry specifies different classifications of trailer hitches: Class I, Class II, Class III, Class IV, Class V, fifth wheel and gooseneck. These hitches correspond to vehicle types. All five are classified as weight-carrying, but Classes 3, 4 and 5 can be fitted with weight-distributing attachments that allow them…

Trailer Leaf Springs

Trailers are great all-purpose haulers, but just like any other vehicle, they need maintenance. A trailer can end up with a broken or worn-out leaf spring. The leaf springs on a trailer are an important part of the suspension, holding the axle straight and also supporting the trailer and the…

TRUSTED BY OVER 6000+ STUDENTS

Join our community of students around the world helping you succeed.

GET STARTED
“My first thought was, who am I to teach?”

– Mary Kate McDevitt, Skillshare teacher with 50,000 students

WATCH VIDEO