the converter dolly air tank drain valve should be the converter dolly air tank drain valve should be

Terms in this set (43) Converter dollies are used to connect: A tractor-trailer combination to another trailer. D. Make sure the spare tire is secured, if it has one. A. countersteer Trailer Air Tanks And Shutoff Valves - TruckingTruth For emergency braking you should: You are doing a walk around inspection of a double or triple trailer rig. All trademarks are property of their respective owners. You should be sure the converter dolly air tank drain valves are _____ and the pintle hook is _____. Otherwise, the dolly tow bar may fly up, possibly causing injury and making it very difficult to re-couple. Becoming A Truck Driver is a dream we've all pondered at some point in our lives. Double and Triples Part 1 Flashcards - flashcardmachine.com the road is dry & visibility is good. What happens if you cross the Emergency Air Line and the Service Air Line? Air escape from the open valve You are driving with double trailers and must use your brakes to avoid a crash. This has the same value as the %%TOTAL%% Variable on the Final Screen. kingpin, That there is grease between upper and lower fifth wheel. driven with care to avoid losing control, Make sure the spare tire is secured, if it has one, Make sure the converter dolly air tank drain valve is closed, Make sure safety chains are secured to the trailers, All of the above. You can also reach us at (888) 830-2326. A dolly is like a very short trailer, with a ring hitch on the front and a fifth wheel on top. A. opening the air tank petcock ADVERTISEMENT ADVERTISEMENT B A bent or damaged kingpin on a coupling should be? 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. TestPermit.com provides free unofficial review materials for a variety of exams. C. use controlled or stab braking, The best way to stop any skid is to: Doubles and triples are more likely to turn over than other combination vehicles because of the "crack- the-whip" effect. Ideal for replacing a worn, leaky drain valve on a compressor. CDL: Doubles/Triples Flashcards | Quizlet With the red knob pushed in on the tractor dash, the service line should have air in it. We'll help you make the right choices and prepare for a great start to your trucking career. You must check that all shut-off valves are in the open position except the ones at the back of the last trailer, which must be closed. Converter dollies have spring brakes. These mirrors: Good speed management says you should: You must drive through deep or flowing water. You must steer gently when pulling trailers. Converter dollies: You should hear air escaping, showing the entire system is charged. fifth wheel, so trailer is raised slightly when dolly is pushed under it. When checking the fifth wheel, you should make sure that it has enough? Safety chains should be secured to trailer(s). 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. It is important not to let water and oil build up in the air tanks. If your tanks have automatic drains, they will keep most moisture out, but you should still open the drains to make sure. If not, there is a problem. %PDF-1.2 % What does the drivers manual say about how much space you should keep ahead of your truck? with the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the trailer. A. allow "much more space" than is needed for ideal driving conditions 3. and the converter dolly air tank drain valve should be _____. A. completely open 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 _______. C. posted speed limits on curves are safe for all trucks, Empty trucks: How much space should be between the upper and lower fifth wheel? 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. Close the emergency line shut-off valve at the rear of the trailer. B. allow one vehicle length for every 10,000 lbs of gross vehicle weight All material on this website is copyrighted. If it goes low enough, the trailer emergency brakes will come on. 8. 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. Allow more following distance. C. use stab or controlled braking, Which of these is true? 1/3 For example: If you are traveling 60 MPH and it begins to rain, your suggested The best way to keep brakes from getting to hot while going down long grades is to: Go slow and use only light, steady pressure on the brakes. This has the same value as the %%TIME_USED%% Variable on the Final Screen. When you go to the rear of the last trailer, what should you do to complete this check? You should NOT: You are driving a set of doubles and a set of trailer wheels goes into a skid. How can you test that air flows to all trailers? which of these is not a good thing to do when driving on slippery roads? Open While inspecting your converter dolly coupling, you should make sure there is _____ between the upper and lower fifth wheel. 2. To uncouple the rear trailer in a set of doubles, the shut-off valve at the rear of the front trailer should be: Closed. Converter dolly air tank drain valve: CLOSED. All ABS equipped units What three methods can you use to secure a second trailer before coupling? 0000001775 00000 n doubles/triples flip flop over from quick steering movements more easily than many other vehicles. you are doing a walkaround inspection of a double or triple trailer rig. Trailer Air Tanks And Shutoff Valves - Page 50. Be sure air-lines are supported and glad hands are properly connected. Do converter dollies have spring brakes? You shouldn't stop braking. How much space should be between the upper and lower fifth wheels? Doubles and triples are extremely prone to control issues and must be With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the rig. Try our free CDL Doubles and Triples Test Question and Answers Quiz online. When checking your air lines, they must be secure and? You should be sure the converter dolly air tank drain valves are ____ and the pintle hook is ____. The converter dolly air tank drain valve on coupled double/triple trailers should be: You are driving a 100-feet truck with double trailers at 50 mph. A 360 degree area of awareness is Converter dolly air tank drain valve: CLOSED Air lines supported and glad hands properly connected. 4. Use only the trailer brakes In the coupling system, the locking jaws should be fixed around? When you uncouple twin trailers, the last step is to Converter dollies You want to hook your combination to a second trailer that has no spring brakes. Release Dolly breaks by opening the air tank petcock or if the dolly has a spring break, use the Dolly parking brake control . Often do not have spring brakes 3. C You may not notice a major leak in the service line until you try to put the brakes on. 1/4 in. If you leave this page, your progress will be lost. When coupling twin trailers, a converter dolly is. what is likely to happen if the pintle hook is unlocked with the dolly still under the second trailer? A. open Please wait while the activity loads. More driving knowledge, questions and answers, online practice tests for obtaining a drivers . Delivering to. The last trailer in a combination is most likely to turn over. ), a 15 year truck driving veteran, in January 2007. If there is air there, then there is air towards the cab You want to hook up to the first trailer, then the converter dolly while it is lined up in Older trailers do not have spring brakes. PDF Doubles and triples 1. The stopping distance for a tractor trailer axle will have spring brakes due to the weight of the unit. A C. closed, You can release the dolly brakes by: Double and Triples Endorsement Flashcards CDL Doubles and Triples Test Question and Answers 2023 [PDF]: Commercial Drivers License Doubles and Triples Endorsements Knowledge Test. Which of these statements about managing space to the sides is true? What should you check for when inspecting the converter dolly and the pintle hook? You should look into the back of the fifth wheel on a dolly to see if it is locked onto the kingpin, A safe speed on a curve for a straight truck or a single trailer combination vehicle may be too fast for double or triple trailers. You can reset the test and retake it as needed. With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the rig. That there is no space between upper and lower fifth wheel. What will happen if there is a major leak in the service air line? These dollies will have a yellow lamp on the left side of the dolly Questions You Should Know For Doubles And Triples 1. These valves permit closing the air lines off when another trailer is not being towed. B. for doubles and triples, the fifth wheel should be all the way towards the tractor Any trailer, 7. True! Air escape from the open valve B The service brakes slowly move to the fully applied position C The emergency line valve open and release air D None of the above 4. Flashcards - Doubles Triples Test #3 - FreezingBlue 0000001956 00000 n The Verge logo. These mirrors: make things seem smaller & further away then they really are. Time used (Requires timer add on). Dobles - Triples Pruebas de prctica 3 - NJ 2023 - CristCDL.com 1) the first one is to pump down the air pressure in the system between 20 and 45psi (pounds per square inch) the trailer air supply will pop out, shutting air off to the trailer. A) one inch of space . Air pressure is sent from the air tanks to the brakes by relay valves. Doubles and triples take up more space than other commercial vehicles. some large trucks have curved (convex or spot) mirrors. Doubles and triples are more likely to turn over than other combination vehicles because of what effect? In this order, the shutoff valves at the rear of front trailers, the rear of the last trailer and the converter dolly air tank drain valve should be? Each trailer and converter dolly has one or more air tanks. 5. Push the brake pedal as hard as you can and hold it there You should keep at least _____ seconds of space ahead of you: You are driving with double trailers and must use your brakes to avoid a crash. - Converter dolly air tank drain valve: CLOSED. 0000001375 00000 n D When uncoupling the converter dolly Why should you never unhook the B. pull gently against the pin of the second semitrailer 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 the trailer will be raised slightly when the converter dolly is backed under it the best way to keep brakes from getting too hot while going down long grades is to : go slow and use only light, steady pressure on the brakes you are driving a 100ft truck with double trailers at 30mph. DMV Doubles Triples Practice Test | CDL Knowledge True False True If you want to couple a second trailer to you combiantion vehicle, secure it by using the: Trailer emergency air brakes. How can you test that air flows to all trailers? There are more things that can go wrong, and doubles/triples are less stable than other commercial vehicles. D Why should you pull a dolly out from under a trailer before you disconnect it from the trailer in front? What is the most common foundation brake found on heavy vehicles? coupled to the rear of a tractor-trailer combination forming a double bottom rig, Careful of the wording! How do you check to make sure the trailer height is correct before coupling? On a triple combination, the shutoff valves on the rear of the last trailer should be? A. make things look smaller and farther away than they really are 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. You should check the height of the trailer before connecting a converter dolly to a second or third trailer. Light cords firmly in sockets on trailer. A 11 Therefore, it is very important for safety that you use wheel chocks when you park trailers without spring brakes. Leave the emergency line shut-off valve closed and open the service line valve. The tanks will hold enough air to allow the brakes to be used several times even if the compressor stops working. Never pull any trailer without visually inspecting the fifth wheel locking bar This would be very dangerous. Also, this page requires javascript. A Which of the following will occur? Doubles Triples Endorsement Test Flashcards | Quizlet That split second that you release the brakes will allow them to match the vehicles road When testing the coupling of the double trailer the landing gears of the rear trailer should be: You want to hook your combination to a second trailer that has no spring brakes. What types of trailers can get stuck on raised crossings? if you have traffic on both sides of your vehicle and something is blocking your lane, a move to the right still be best. Time allowed (Requires timer add on). None of the above, 5. The lightest trailer [California Commercial Driver Handbook] The weight of a truck: Is a major factor affecting stopping distance. A You need to brake in order to regain control. Doubles/triples flip flop over from quick steering moves more easily than many vehicles. The Doubles and Triples written CDL Exam is required for your doubles and triples endorsement. The application only takes one minute. Which f these will result in the best control on curves? 0000007487 00000 n None [Penalties Applying to Any DUI Conviction; Driving Under the Influence of Drugs or Alcohol (The "DUI" Law); Section B-7 Alcohol, Other Drugs and Driving; Tennessee Comprehensive Driver License Manual]. A full trailer behind a truck Safety should never take second place, so know your stuff! 1. Pickup at South Loop. B Remember: The trailer air brakes are supplied with air using the emergency line (also called the supply line). 3. You will not be tested on uncoupling twins unless you want to get a double/triple trailer endorsement on your license. Open, free Page 7-6 Commercial Driver's Manual/2.0 = Be sure air lines are supported and glad hands are properly connected. Shut-off valves (also called cut-out cocks) are used in the service and supply air lines at the back of trailers used to tow other trailers. 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. do not need to be checked as often as flat mirrors because they show a larger area