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Two modules of Cometto MSPE series configured with turntable operated by Eisele AG in Maintal.. A self-propelled modular transporter or sometimes self-propelled modular trailer (SPMT) is a platform heavy hauler with a large array of wheels which is an upgraded version of a hydraulic modular trailer.
A fifth-wheel coupling is also referred to as a kingpin hitch and is a smaller version of the semi-trailer "fifth wheel". Though a fifth wheel and a gooseneck trailer look much the same, their method for coupling is different. A fifth wheel uses a large horseshoe-shaped coupling device mounted 1 foot (0.30 m) or more above the bed of the tow ...
When a trailer skids to one side, this is known as a trailer swing or trailer slew. This can occur on a slippery road surface, often where there is a cant . This is not the same as jackknifing and is not as serious, as the trailer will move back into line as the vehicle continues forwards.
A 2.5-ton house jack that stands 24 inches from top to bottom fully threaded out. A house jack, also called a screw jack, is a mechanical device primarily used to lift buildings from their foundations for repairs or relocation. A series of jacks is used and then wood cribbing temporarily supports the structure. This process is repeated until ...
If the Pilot forgot to operate the trailer brakes when the Boilermaker Special's foot brake was operated, the trailer might jack-knife, particularly if more passengers were seated on one side of the trailer. Also, the steering action of the front trailer wheels was not damped, so the towing speed of the trailer was limited to 25 miles per hour.
It is usually a tripod that attaches to the king-pin of the fifth-wheel trailer hitch. Most are adjustable with a hand crank. Landing gear On a fifth-wheel trailer these are two jacks that are usually coupled together and are motor driven, that lift the front of the fifth-wheel trailer up so that the truck can be driven under the front and ...