The computer senses impending lockup, reduces the braking pressure to a safe level, and you maintain control. If both of these conditions exist, the fifth wheel will still be able to be coupled even though the lock jaws appear closed. Coupling Preparation. To drive a tractor-trailer safely, you must be able to. Driving Combination Vehicles Safely. NOTE: For proper operation of landing gear, follow the landing gear manufacturer's instructions. Inside Sales Support. Rotate Handle and Raise Trailer Off Ball. Not only can a dropped load be a very dangerous situation, but the recovery cost can exceed $1000. The GNY "Liquid Fifth Wheel" is a composite, fabricated steel, upper and lower Fifth Wheel Assembly integrally joined through a hi-tensile steel ring bearing.
STOP the tractor before making contact with the trailer. Having ABS on only the trailer, or even on only one axle, still gives you more control over the vehicle during braking. The air could leak out of the trailer air tank, releasing its emergency brakes. Release the tractor parking brake and slowly pull forward 12 to 18 inches (306 – 457 mm) to disengage kingpin from fifth wheel.
Quote From The CDL Manual: Ease Pressure on Locking Jaws. Don't hit the trailer. 4 – Uncoupling a Pintle Hook. Position the trailer's coupler directly over the ball and lower the Gooseneck trailer into position and latch the clamp. Emergency air lines and the electrical connection for the. Insert the tethered lock pin through the latch and lock holes, and close the tethered wire lock pin, if applicable (Figure 16). The fifth wheel is used to guarantee safe and efficient support of rear loads/trailers for easier transportation using trucks. WARNING: Failure to avoid exhausting tractor suspension before uncoupling could result in difficulty uncoupling tractor from trailer which, if not avoided, could result in damage to the fifth wheel and kingpin. Frequency of Inspection of the 5th Wheel Coupling. Dollies manufactured on or after March 1, 1998, are required to have a lamp on the left side. Answers About five inches of space A maximum of two inches of space No space Explanation Before a trip, be sure to inspect all couplings. Connect your trailer light wiring to your vehicle's connector.
The device allows you to control the speed and direction of the trailer without it detaching from the tractor. Safe operation of a. tractor-trailer requires skill in coupling and uncoupling, accelerating, steering, shifting gears, and braking. Close the emergency line valve. How do you know if your trailer is equipped with antilock brakes? The locking mechanism should be inspected regularly every time the tractor is towing the trailer. Easier and safer to tow and back up than travel trailers. Pull tractor gently forward while the trailer brakes are still locked to check that the trailer is locked onto the tractor. What is the 5th Wheel Coupling Used For? Reverse truck very slowly until the ball cup drawbar eye (6) is in position exactly above the drawbar coupling ball (5). Make sure surface of parking area can support weight of trailer. Aftermarket Field Representative. Slowly back into the trailer, engaging kingpin in the fifth wheel. Inspect Trailer Supports. Raise Trailer Coupler.
Unlock the coupler and open it. Adjust tractor suspension to ride height. GNY Liquid Fifth Wheels. Fit in safety lock screw (2) and tighten in self-locking nut (12). Attach your safety chains. Put parking brakes on. Remove Trailer Wheel Chocks. Once free of weight, switch to the high gear range. A. Nut and washer must be snug against the fifth wheel casting. Used fifth wheels will range in cost from approximately $5, 000 to $60, 000.
Check Connection for Security. Separation of tractor and trailer is accomplished by removal of two securing pins from upper support bearings and lower bearing brackets and disconnection of product piping. If the trailer is too low, the tractor may strike and damage the trailer nose; if the trailer is too high, it may not couple correctly. Apply parking brake. All locking pins present and locked in place. Stay safe out there!