the converter dolly air tank drain valve should be

A coupling device of one or two axles and a fifth wheel by which a semitrailer can be coupled to the rear of a tractor-trailer combination forming a double bottom rig Should the shut off valves on the rear of the first trailer be open or closed on a set of double trailers? You need to stop braking because it's necessary for you to speed up, When you are in a drive-wheel braking skid, the first thing to do is STOP BRAKING! When entering a roundabout, a driver must yield the right-of-way to drivers already in the roundabout and obey all traffic signs. It is very important to keep the air supply clean. The rear trailers shut-off valves should be open and the front closed. open the shut-off valves at the rear of the first trailer and close the shut-off valves at the rear of the second trailer, enclose converter dolly air tank drain valves A To do this without wheel chocks you should: Empty trucks: When parking your double or triple combination, you should look for a parking space A major leak in the emergency line will cause the tractor protection valve to close and the trailer emergency brakes to come on. We've all wondered if the adventure and challenges of life on the open road would suit us better than the ordinary day to day lives we've always known. When testing trailer service brakes, you should use? When uncoupling doubles or triples, what is important to know about unlocking the pintle hook? 0000010705 00000 n How should you test the coupling? 9 A Open, latched B Open, free C Closed, latched D Closed, free 28. That split second that you release the brakes will allow them to match the vehicles road 2003-2023 Chegg Inc. All rights reserved. Park the rear trailer against another trailer, chock the tires and lock the trailer When does the "driver's manual" advise disconnecting the steering axle brakes to help The shut off valves prevent air from going any further. speed and start spinning again, in turn stopping your skid, All the listed answers would be correct. Open. Any single vehicle with a GVWR of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds. The rear trailers shut off valves should be closed and the front open to allow air to the Hazardous materials must be placarded on all four sides of EACH Trailer. You will speak with recruiters today. C These dollies will have a yellow lamp on the left side of the dolly Questions You Should Know For Doubles And Triples 1. 0000001956 00000 n The couplers have a rubber seal that prevents air from escaping. open, closed, closed: Term. A. use the engine brake or speed retarder What does the Commercial Driver Handbook say about how much space you should keep ahead of your truck? which of these statements about quick steering movements and doubles/triples is true? C. open, except the one connected to the rear trailer should be closed, During normal operation the brakes on double and triple trailers are controlled by the: B. for doubles and triples, the fifth wheel should be all the way towards the tractor A connection device of one axle used to disconnect a semitrailer combination vehicle Stop the vehicle by gearing down and sparingly That there is no space between upper and lower fifth wheel. Please wait while the activity loads. You must steer gently when pulling trailers. You should be sure the converter dolly air tank . You should hear air escaping, showing the entire system is charged. Doubles and triples are more likely to overturn than other combination vehicles because of the whip cracking effect. But the brakes will hold only as long as there is air pressure in the trailer air tank. The pressure in the service line is controlled by the brake pedal and the trailer hand brake. What should you check for when inspecting the converter dolly and the pintle hook? 12, 3. X D5^4aX{Ka)nT)Ac g" endstream endobj 58 0 obj 108 endobj 23 0 obj << /Type /Page /Parent 19 0 R /Resources 24 0 R /Contents [ 31 0 R 33 0 R 35 0 R 46 0 R 48 0 R 50 0 R 52 0 R 54 0 R ] /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 24 0 obj << /ProcSet [ /PDF /Text ] /Font << /F2 37 0 R /F4 40 0 R /TT2 28 0 R /TT4 26 0 R /TT6 42 0 R /TT8 44 0 R >> /ExtGState << /GS1 55 0 R >> /ColorSpace << /Cs5 29 0 R >> >> endobj 25 0 obj << /Type /FontDescriptor /Ascent 905 /CapHeight 0 /Descent -211 /Flags 32 /FontBBox [ -222 -325 1072 1037 ] /FontName /ArialMT /ItalicAngle 0 /StemV 0 >> endobj 26 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 121 /Widths [ 278 0 355 0 0 0 0 191 333 333 0 0 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 0 0 0 0 556 0 667 667 722 722 667 611 778 722 278 0 667 556 833 722 778 667 0 722 667 611 722 0 944 0 667 0 0 0 0 0 0 0 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 556 333 500 278 556 500 722 500 500 ] /Encoding /WinAnsiEncoding /BaseFont /ArialMT /FontDescriptor 25 0 R >> endobj 27 0 obj << /Type /FontDescriptor /Ascent 905 /CapHeight 0 /Descent -211 /Flags 96 /FontBBox [ -262 -325 1082 1025 ] /FontName /Arial-ItalicMT /ItalicAngle -15 /StemV 0 >> endobj 28 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 118 /Widths [ 278 0 0 0 0 0 0 191 0 0 0 0 0 333 278 278 556 556 556 556 556 556 556 556 0 0 0 0 0 0 0 0 0 0 0 722 722 0 0 0 0 0 0 0 0 833 0 0 667 0 0 0 611 0 0 0 0 0 0 0 0 0 0 0 0 556 556 500 556 556 0 556 0 222 0 0 222 833 556 556 556 0 333 500 0 556 500 ] /Encoding /WinAnsiEncoding /BaseFont /Arial-ItalicMT /FontDescriptor 27 0 R >> endobj 29 0 obj [ /CalRGB << /WhitePoint [ 0.9505 1 1.089 ] /Gamma [ 2.22221 2.22221 2.22221 ] /Matrix [ 0.4124 0.2126 0.0193 0.3576 0.71519 0.1192 0.1805 0.0722 0.9505 ] >> ] endobj 30 0 obj 638 endobj 31 0 obj << /Filter /FlateDecode /Length 30 0 R >> stream first check for battery voltage to the valve by probing the wires of the electrical connector with a volt-meter it should be about 10.5 volts if not it's probably bad.next remove the valve. The road is dry and visibility is good. The road is dry and the visibility is good. Submit your email at the end of the test. When you are pulling trailers, which of the following statements is true about steering? Make sure the converter dolly air tank drain valve is closed. 11 During normal operation the brakes of the double/triple trailer are controlled by: When checking your air lines, they must be secure and? Before you can supply air to the air tanks of a second trailer you need to: Open the shut-off valves at the rear of the first trailer and close the shut-off valves at the rear of second trailer. Otherwise, the dolly tow bar may fly up, possibly causing injury and making it very difficult to re-couple. Antilock Braking Systems on Converter Dollies, Converter dollies built on or after March 1, 1998, are required to have antilock brakes. A. make things look smaller and farther away than they really are D c. iron 5. fumoto drain valve. second trailer will be connected, The dolly will have a yellow lamp on the left side, The dolly will have a yellow lamp on the right side, The dolly will have a red lamp on the left side, The dolly will have a red lamp on the right side. 10 True or False? When you're trying to correct a drive-wheel braking skid why should you stop braking? 7. The number and size of air tanks varies among vehicles. What is likely to happen? These mirrors: Make things seem smaller and further away than they really are. A. for coupled doubles and triples, be sure that the pintle hook is in the open position A. On a triple combination, the shutoff valves at the rear off the middle trailer should be? What happens when there is a major leak in the emergency air line? During normal operation the brakes of the double/triple trailer are controlled by: You are driving at night and you must dim your headlights for traffic. Go to the rear of second trailer and open the emergency line shut-of valve. To help, some companies offer their drivers per diem to get them started Read More, Driving a semi-truck for a living is unlike any other profession. Before you can supply air to the air tanks of a second trailer you need to. symptoms of a bad fuel tank selector switch. Doubles and triples must be driven very smoothly to avoid rollover or jackknife. Some vehicles have dead end or dummy couplers to which the hoses may be attached when they are not in use. How much space should be between the upper and lower fifth wheel? How can you test that air flows to all trailers? Therefor, if there is a major leak in your service line, you may not know it until you try to use the service brake. Why should you pull a dolly out from under a trailer before you disconnect it from the trailer in front? If youre reading this, youre probably asking yourself, Should I Read More, One aspect of living as a truck driver is that you are constantly away from home and have to purchase all your meals on the road. A. opening the air tank petcock View the full article to see how to set cruise control correctly! coupled to the rear of a tractor-trailer combination forming a double bottom rig, Careful of the wording! The number of correct answers. Calculate the voltage gain of each. C. add "one car length for every 10 mph", Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer, Incidental Motions & Motions that Bring a Que. Safety chains secured to trailer (s). 1. A converter gear or dolly is a coupling device of one or two axles and a fifth wheel by which a semi-trailer can be coupled to the rear of a tractor-trailer combination forming a double bottom. What is most likely to happen if the trailer protection valve of a double or triple trailer does not function correctly? and the converter dolly air tank drain valve should be _____. door. Only a certified diesel mechanic can check this. The front trailer in a set of double trailers is most likely to turn over due to the Crack-the-Whip effect. Which of these is the correct answer? A low air buzzer will go off indicating something is wrong and either the front or the Locking jaws open On the middle trailer of a set of triples? B. restore traction to the tires A You are doing a walk around inspection of a double or triple trailer rig. To uncouple the rear trailer in a set of doubles, the shut-off valve at the rear of the front trailer should be: Closed. Locking jaws closed on When you do this, you should hear: King pin. What value of channel width must the design use? The application only takes one minute. While doing a walkaround inspection of a double or triple, the converter dolly air tank drain valve should be _______, and the pintle hook should be _______. How do you check to make sure the trailer height is correct before coupling? The emergency brakes come on whenever the air supply knob is pulled out or the trailer is disconnected. C The Verge logo. How can you be sure you supplied air to a second trailer? Make sure to visually inspect the fifth wheel and that the locking mechanism is Like a trailer, a dolly equipped with ABS will have a yellow indicator light on the left side. Ensuring the safety of the public starts with a thorough mTouch Quiz will automatically populate the fields below. . You should be sure the converter dolly air tank drain valves are _____ and the pintle hook is ____. HlTo xGf`{iIMh-x||?pbE':X4ZZZRbu7 uvi_RHUkVXBVu{^B3 4e/iw\]RE] YY7i)e V*h(++WQ-]Xm9c5yU6BS" 5HiL,[b)ee:t/ )%BVGpU7T\ZJD air throughout the system. TestPermit.com provides free unofficial review materials for a variety of exams. Did you know you can fill out one quick form here on TruckingTruth and apply to several companies at once for paid CDL training? Driving doubles/triples is also more dangerous in hot and cold weather driving, as well as on mountain roads. unsafe slow down even further, or better yet, find a safe haven and park until the 0000005345 00000 n When you do this, you should hear: The dolly tow bar may fly up B There are more critical parts to check when you have two or three trailers. When you go to the rear of the last trailer, what should you do to complete this check? To do this without wheel chocks you should: When uncoupling the rear semitrailer, you should lower the converter dolly landing gear: When driving a double or triple, you need more space because they: Which of these statements about emergency steering is true? Once that's complete, then its an easy push back and the C. close the shut-off valves at the rear of the first trailer and open the shut-off valves at the rear of the second trailer, To check that the converter dolly is securely coupled to the rear trailer, you should: B Make a sketch that explains this phenomenon in terms of a feedback loop . A. countersteer Becoming A Truck Driver is a dream we've all pondered at some point in our lives. 27. If your converter dolly has to be moved over a distance to bring it to your semitrailer, you should? If you do, the brakes may not work correctly. What happens if you cross the Emergency Air Line and the Service Air Line? when does the drivers manual say you should disable the steering axle brakes? 1/2 to 3/4 of an inch Watch the wording of the question AND the answers A safe driver will look for all of the above. True! Open the shut-off valves at the rear of the last trailer and listen for air flow. Hit the article below to see specific information about AOBRDs! Any items you have not completed will be marked incorrect. Any combination of vehicles with a gross combined weight rating (GCWR) of 26,001 or more pounds, providing the gross vehicle weight rating (GVWR) of the vehicle being towed is in excess of 10,000 pounds. 1/3 For example: If you are traveling 60 MPH and it begins to rain, your suggested 0000009556 00000 n securely fastened. Pintle-eye of dolly in place in pintle hook of trailer (s). All of the above, 6. The road is dry and visibility is good. View the price and details of this FINSBURY PUMP SYSTEMS 400L (SINGLE STAGE) 5.5HP HONDA GX PETROL ENGINE (18M HOSE) FIRE WATER TANK | Mobile fire units. Unlock the pintle hook only if the trailer it is under is loaded, otherwise the dolly tow bar may fly up, possibly causing injury and making it very difficult to re-couple. Allow much more space than is needed for ideal driving condition. When connecting a converter dolly to a rear trailer, the trailer height must be adjusted so that it is? A 360 degree area of awareness is S-cam brakes are the most common style brakes on large trucks today. Air flows steadily and isentropically through a passage. . In order to receive your Doubles and Triples endorsement, it is required that you pass the state's official CDL written Knowledge exam. Speed for other vehicles is often too fast for a multi-combination unit! They are filled by the emergency (supply) line from the tractor. Do converter dollies have spring brakes? In the coupling system, the locking jaws should be fixed around? be coupled to the rear of a tractor-trailer combination forming a hexagon bottom rig, A coupling device of one or two axles and a fifth wheel by which a semitrailer can be 0000003977 00000 n All trademarks are property of their respective owners. The air lines will rupture What is a converter dolly? The coupling between a rear trailer and a dolly should have a space between the upper and lower fifth wheels of? weather passes. When inspecting the air brakes on doubles and triples, you wait for air pressure to reach normal, then push in the red trailer air supply knob. Open the emergency line shut-off valve at the rear of the last trailer. Should the shut-off valves on the trailers be open or closed on a set of double trailers? A driver of a vehicle with double or triple trailers will have greater length and more dead axles to pull, increasing the likelihood of a wreck. A full trailer behind a truck 0000003060 00000 n To help avoid mistakes, colors are sometimes used. Take special care when pulling two and three trailers. Typically depends on the axle count. If the dolly is a two axle unit then 1 you are driving on a slippery road during the day. A Some areas of concern are discussed below. What types of trailers can get stuck on raised crossings? Why should you pull a dolly out from under a trailer before you disconnect it from the trailer in front? The dolly tow bar may fly up, possibly causing injury and making it very difficult to re-couple. Shut-off valves (at rear of trailers, in service and emergency lines): When pulling doubles or triples, what is important to know about the order of the trailers? Which f these will result in the best control on curves? Often do not have spring brakes Unless you are draining the condensation out of the air tank, then the drain valve If you leave this page, your progress will be lost.

Uber From Sanford Airport To Universal Studios, Outlast Chris Walker Height, The Killers Vip Silver Package, Articles T