Maybe you're thinking of a Johnson bar, which is either attached to the steering column or on the dash, and is used to actuate the trailer brakes without actuating the remaining brakes? Real handy for extendable RNG trailers, where you must keep air supplied to the trailer, but have to apply the trailer brakes.
A cheater bar is the bar used to tighten down strap winches and chain binders on flatbed and other open deck trailers.
Its the steel bar at the end of a trailer that prevents automobiles from going underneath the trailer in a rear end collision!
Draw bar is a trailer attachment device. Tongue is the point on a pintle mounted trailer which attaches to a ball or clevice on the tow vehicle.
You can use snap binders, but it's really not recommended to do such. You risk damaging the vehicle if you lose your grip on your cheater bar when you unsnap them, and vehicles may still have a little sway when on the trailer, and ratchet binders are really the better way to go in order to eliminate this problem.
These are items you would be more likely to find on a farm tractor than on a tractor-trailer. A tongue is mounted to the frame (or an auxiliary arm), and can facilitate a hitch or mount for pulling a trailer. A drawbar is the bar which extends from the tow vehicle (or another trailer) to a dolly under the front of a trailer. You're not likely to find a tongue on a tractor-trailer. The primary means of coupling is the fifth wheel, and some tractors may additionally be equipped with a pintle mounted on the back of the chassis. Drawbars are more common to dump trucks which transport pup trailers behind them, and doubles combinations which require more significant separation of the two trailers than what a typically A-congear provides.
there is only one clutch and that is on the left handle bar
I use a 24" pipe wrench to hold the yoke, and a big breaker bar with a cheater bar to tighten the nut.
Bar Rescue - 2011 Punch-Drunk and Trailer-Trashed 4-2 was released on: USA: 23 March 2014
A door saver bar is a metal bar that fits on the inside of a semi trailer roll up door to keep the door from rising all the up to the top of the trailer, it allows for ease of use when grabbing the door to pull it back down when it needs to be closed.
Just leave it as is, and don't push in your trailer air when you drive. If you're referring to the Johnson bar, it can be changed to engage the tractor brakes instead of the trailer brakes, but it would probably be more hassle than it's worth. The only applications I can think of where one would actually benefit from having the Johnson bar engaged the power unit brakes are dump trucks (particularly, those dumping asphalt or concrete into pavers) and roll-off container trucks. Otherwise, there really is no use for it, unless you have something like a Mack R or RD model, where you have to pull lightly on the Johnson bar to engage the differential lock (but in which case, the Johnson bar would already be set up to engage the brakes of the power unit).
tow vehicle with a standard pintle hook
Set the Fire to the Third Bar by Snow Patrol
A sway bar is used to control the sway of a trailer towed with a ball hitch. it is a two piece assembly with a handle attached to a screw tightener. the sway bar attaches to your hitch and to the A frame on your trailer. It attaches through the use of 1"ball and cups on each axle sway slides back and forth as the trailer and tow vehicle articulate. The screw tightener clamps down on a brake shoe which causes friction to limit the amount of movement on the bar.