the converter dolly air tank drain valve should be

You can also reach us at (888) 830-2326. C. When coupling doubles and triples, be sure that the pintle-eye of the dolly is in place in the pintle hook of the trailer, You are driving on a slippery road during the day. High Road 2.0! 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. allow "much more space than is needed for ideal driving conditions". a sudden movement with the steering wheel can result in a tipped over rear trailer, you wish to turn right from one two-lane, two-way street to another. Doubles/Triples Endorsement Flashcards | Quizlet Why should you pull a dolly out from under a trailer before you disconnect it from the trailer in front? True False True If you want to couple a second trailer to you combiantion vehicle, secure it by using the: Trailer emergency air brakes. Hit the article to see the way to back up your trailer like a pro! paramount to safe driving. When connecting two trailers the converter dolly is connected to the rear trailer first. These trailers have no parking brake. Slow to the safe speed before entering, then accelerate slightly through the curve. A. make things look smaller and farther away than they really are Air Storage and Drain Tanks: Air storage tanks are used to hold compressed air. You are doing a walkaround inspection of a double or triple trailer rig. Doubles and triples are more likely to turn over than other combination vehicles because of what effect? then there is a problem with the ABS system. To check that the trailer emergency brakes are working properly, you should pull out the trailer air supply control and? You should be sure the converter dolly air tank drain valves are _______ & the pintle hook is __________. Each trailer and converter dolly has one or more air tanks. To check air flows to all trailers, you should let air pressure reach normal then? How To Use Cruise Control Effectively As A Truck Driver. The application only takes one minute. The trailer is at the correct height when. You should keep at least ____ seconds of space ahead of you. Locking jaws closed on Each trailer and converter dolly has one or more air tanks. If you do, there is a problem. A low air buzzer will go off indicating something is wrong and either the front or the B B. closed If one air system is very low on pressure _______. B. open; latched When uncoupling a rear trailer, you should remove some weight from the dolly by? Learn more and apply here: The more heavily loaded semitrailer should be in first position behind the tractor. coupled to the rear of a tractor-trailer combination forming a double bottom rig, Careful of the wording! Should the converter dolly air-tank drain valve be open or closed on a double trailer combination? the fifth wheel, so trailer is raised slightly when dolly is pushed under it. DOUBLE/TRIPLE CDL Flashcards | Chegg.com 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. 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 A vehicle transporting hazardous materials is required to display placards where? There is no requirement or exact standard for color coding. cQ 220rd8bihuM#Om>G*Lz)g^\l9'A9/omf|b49U[@%jGT-QR6i. how much space should be between the upper and lower fifth wheel? A good and safe driver will always look out for ______. Each trailer and converter dolly has one or more air tanks. On the first trailer in a set of doubles? In normal operation, trailer service brakes should be operated by? A Should the shut-off valves on the rear of the last trailer be open or closed? Go to the rear of the rig. Any items you have not completed will be marked incorrect. All other trailer air functions use the emergency line. The Verge logo. All rights reserved 2022 TestPermit.com, CDL Doubles and Triples Test Question and Answers, Divided Highway Sign: Meaning, Quiz Definition, Example, Shape, Location, Color, Narrow Bridge Sign: Meaning, Quiz Definition, Example, Shape, Location, Color, STOP Sign 2023 Meaning, Quiz Definition, Example, Shape, Location, Color, Crossbuck Sign: Meaning, Definition, Example, Shape, Location, Color, Georgia CDL Permit Practice Test 2023 Study Guide [PDF], Georgia Motorcycle Permit Test 2023 with Study Guide [PDF], Georgia Permit Test 2023 (DDS Practice Test UPDATED), Georgia ADAP Practice Test 2023 Questions Answers Online, Ohio CDL Permit Practice Test 2023 Study Guide [PDF], Ohio Motorcycle Permit Test 2023 Study Guide [PDF]. They provide the air pressure used to operate trailer brakes. unsafe slow down even further, or better yet, find a safe haven and park until the symptoms of a bad fuel tank selector switch. When connecting the glad hands, press the two seals together with the couplers at a 90-degree angle to each other. Related Question Question: What does this sign mean? c. iron Stay up to date on truck driving industry news. View More Details. S-cam brakes are the most common style brakes on large trucks today. The shortest trailer A Commercial Drivers License Overview, Trucking Terminology and Transportation Definitions. If your converter dolly has to be moved over a distance to bring it to your semitrailer, you should? A. open the shut-off valves at the rear of both trailers Delivering to. 0000008915 00000 n 0000003060 00000 n Never unlock the pintle hook with the dolly still under the rear trailer. These mirrors: make things seem smaller & further away then they really are. 0000010705 00000 n A. release the spring brakes and check for movement Charge the system and pump the brakes with the window down. A dolly has lights, air tanks, air relays, air lines, air brakes, ABS, electrical connections, etc. A. for coupled doubles and triples, be sure that the pintle hook is in the open position weather passes. Be sure pintle-eye of dolly is in place in pintle hook of trailer(s). You should be sure the converter dolly air tank drain valves are ____ and the pintle hook is ____. 3. When you do this, you should hear: Which of these statements about emergency steering is true? A. completely open you should avoid traveling next to others when possible. While inspecting your converter dolly coupling, you should make sure there is _____ between the upper and lower fifth wheel. 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? For all brakes to work on a triple combination, you must have air supply? That there is no space between upper and lower sixth wheel. Hazardous materials must be placarded on all four sides of EACH Trailer. 0000003977 00000 n 1 What happens when there is a major leak in the emergency air line? The Home Depot Logo Secure converter gear support in raised position. A. use light, steady pressure on the brake pedal B. releasing the pintle hook and the converter dolly air tank drain valve should be _____. Which of these is NOT a good thing to do when driving on slippery roads? To test the tractor protection valve, charge the trailer air brake system, turn off the engine, and 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. Air valves should be closed on all trailers, Air valves should be open on all trailers, Rear of front trailers: closed, rear of last trailer: open, Rear of front trailers: open, rear of last trailer: closed. What is the most common foundation brake found on heavy vehicles? B D How can you test that air flows to all trailers? the crack-whip effect that triubkes trucks with trailers is most likely to cause a tip over when. Why should you check for when inspecting the converter dolly? Pull gently against the pin of the second trailer. NPT thumbscrew style design enables easy installation. Which is most likely to tip over: When you do this, you should hear: Open, free You should NOT: 0000006836 00000 n inspection of all equipment. front of the second trailer. B. you need about four times as much stopping distance at 40 mph as at 20 mph The topics with which you will want to be expertly familiar are: There isnt as much information to be studied in the classroom or in the CDL manual regarding doubles and triples, so in-lot and on-the-road practice will help you pass this test. If loading fails, click here to try again. They provide the air pressure used to operate trailer brakes. 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. 0000001354 00000 n We'll help you make the right choices and prepare for a great start to your trucking career. 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. The rear trailer of a double Dont hesitate to take advantage of our practice tests in each category specific to your needs. The crack the whip effect will topple the rear trailer first. Doubles and triples are extremely prone to control issues and must be When you go to the rear of the last trailer, what should you do to complete this check? Slow to the safe speed before entering, then accelerate slightly through the curve. If it goes low enough, the trailer emergency brakes will come on. This means. HK Extended Tank Drain Assembly Kit with 10 Inch Braided Steel Hose 1/4 Inch Drain Valve and Elbow Fitting for Air Compressor 4.7 (463) $1499 FREE delivery Thu, Mar 9 on $25 of items shipped by Amazon Small Business All Tool Depot Air Compressor Drain Valve Replacement for Craftsman Petcock 072-0001, 072-0006 (1-Pack) 4.2 (20) $649 kingpin, That there is grease between upper and lower fifth wheel. A. the total stopping distance of a truck is the distance it takes to stop once the brakes are put on at any speed axle will have spring brakes due to the weight of the unit. Slow to a safe speed before entering the curve, then coast through the curve. In an application in which vGS=vDS=Vsupply=1.8V,v_{G S}=v_{D S}=V_{\text { supply }}=1.8 \mathrm{V},vGS=vDS=Vsupply=1.8V, a drain current of 2 mA is required of a device of minimum length of 0.18m.0.18 \mu \mathrm{m}.0.18m. The number of correct answers. 1. It's a fifth wheel, not a sixth wheel. When the road is slippery Why should you pull a dolly out from under a trailer before you disconnect it from the trailer in front? B D The rear trailers shut-off valves should be open and the front closed. B 9. Open the emergency line shut-off valve at the rear of the last trailer. The Doubles and Triples written CDL Exam is required for your doubles and triples endorsement. It is important to check the height of the trailer before connecting a converter dolly to a trailer. What is one function of the tractor protection valve? The total number of questions. What is most likely to happen if the trailer protection valve of a double or triple trailer does not function correctly? Ship to Store. Closed, free, 8. When checking the fifth wheel, you should make sure that it has enough? You should be sure the converter dolly air tank drain . The converter dolly air tank drain valve on coupled double and triple trailers should be: When inspecting coupled doubles and triples, make sure the pintle hooks are: How can you be sure you supplied air to a second trailer? A. brake and downshift in a curve If a converter dolly is still under the second trailer and you unlock the pintle hook, what will probably happen? slow to safe speed before entering, then accelerate slightly through the curve. 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 Calculate the voltage gain of each. What three methods can you use to secure a second trailer before coupling? Make sure you can hear air escaping with the valve closed. some large trucks have curved (convex or spot) mirrors. The road is dry and visibility is good. The rear trailers shut off valves should be closed and the front open to allow air to the Doubles and triples are more likely to overturn than other combination vehicles because of the whip cracking effect. Therefore, it is very important for safety that you use wheel chocks when you park trailers without spring brakes. The braking systems of double and triple trailers are different than those of straight trucks because doubles and triples. C Which of the following statements about off tracking is true? They provide the air pressure used to operate trailer brakes. This has the same value as the %%PERCENTAGE%% Variable on the Final Screen. Air flows steadily and isentropically through a passage. Some do. What should you check for when inspecting the converter dolly? In the coupling system, the locking jaws should be fixed around? If this lamp is illuminated and does not go out, Good speed management says you should: You must drive through deep or flowing water. We are here to help. But the brakes will hold only as long as there is air pressure in the trailer air tank. Check them all. Try our free CDL Doubles and Triples Test Question and Answers Quiz online. not have spring brakes. A. allow "much more space" than is needed for ideal driving conditions D Pintle-eye of dolly in place in pintle hook of trailer (s). The last trailer in a combination is most likely to turn over. Correct answer percentage. You are driving with double trailers and must use your brakes to avoid a crash. during normal operation the brakes of the double/triple trailer are controlled by : which of these will result in the best control on curves? If spare tire is on converter gear (dolly), make sure it is secured. CDL Doubles & Triples Practice Test 3 - Classic Mode - Trucker Country There are more things that can go wrong, and doubles/triples are less stable than other commercial vehicles. You should hear air escaping, showing the entire system is charged. You want to lock your combination to a second trailer that has no spring brakes. Each tank has a drain valve on it, and you should drain each tank every day. 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. 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? 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. Pintle hook latched. What three methods can you use to secure a second trailer before coupling? In bad weather, slippery conditions and mountain driving, you must be especially careful if you drive double and triple bottoms. You are doing a walk around inspection of a double or triple trailer rig. True! the road is dry & visibility is good. P0420 code honda odyssey 2011 - pjigzp.wikifit.it Any trailer, 7. You are driving a 100 foot twin trailer combination at 50 mph. By clicking on "Sign Up", you agree to our Terms of Use and Privacy Policy. Which of these is most likely to occur? When entering a roundabout, a driver must yield the right-of-way to drivers already in the roundabout and obey all traffic signs. If you do cross the air lines, supply air will be sent to the service line instead of going to charge the trailer air tanks. Pull gently against the pin of the second trailer. DMV Doubles Triples Practice Test | CDL Knowledge When checking your air lines, they must be secure and? The A-dolly has a single drawbar with a single, centered hitching point. go to the rear of the second trailer and open the emergency line shut off, before you can supply air to the air tanks of the second trailer you need too, open the shut-off valves at the rear of the first trailer & close the shut-off valves at the rear of the second trailer. A. Did you know you can fill out one quick form here on TruckingTruth and apply to several companies at once for paid CDL training? Ensuring the safety of the public starts with a thorough "Glad hands" are coupling devices used to connect the service and emergency air lines from the truck or tractor to the trailer. 60607. C All of the above, 6. When testing trailer service brakes, you should use? you want to hook your combination to a second trailer that has no spring brakes. The dolly will have a yellow lamp on the drivers (left) side. New! You should be sure the converter dolly air tank drain valves are _______ and the pintle hook is _____. C. slow to a safe speed before entering the curve, then coast through it, Which of these is NOT a good thing to do when driving on slippery roads? The converter dolly air tank drain valve on coupled double/triple trailers should be: Closed. The application only takes one minute. Wait for air pressure to reach normal, then push in the red trailer air supply knob. If you're pulling more than one trailer, all valves should be open except the very last trailer, which should have all valves in the closed position. Double and Triples Endorsement Flashcards 0000003998 00000 n Open the shut-off valves at the rear of the last trailer and listen for air flow. To do this without wheel chocks you should: Empty trucks: When parking your double or triple combination, you should look for a parking space This has the same value as the %%SCORE%% Variable on the Final Screen. [California Commercial Driver Handbook] The weight of a truck: Is a major factor affecting stopping distance. You are doing a walk around inspection of a double or triple trailer rig. Why should you not use the trailer hand valve while driving? Studying and applying oneself is the only way to successfully learn the information you need to know to pass all testing required to obtain your CDL. What do you check when making a visual check of coupling? At TruckingTruth we'll help you decide if trucking is right for you and help you get your career off to a great start. Describe what the trailer air supply control does. Optional: Leave your email address if you would like a reply: When inspecting doubles or triples, in what position should the air shut-off valves be in? B Air escape from the open valve 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 When you do this, you should hear: you are driving with double trailer and must use your brakes to avoid a crash. The road is dry and visibility is good. At section 2 downstream, the speed is 519 m/s. C The road is dry and the visibility is good. A 7.3 Inspecting Doubles and Triples = Additional Things to Check During a Walkaround Inspection. When coupling twin trailers, you should _______ the pintle hook and secure the dolly support in the _______ position. 0000009577 00000 n This is CDL Doubles and Triples Test 3in our original Classic Mode. Converter dollies are connected to front trailers with a? Which is most likely to tip over: You can test that air is flowing to all trailers by opening? 0000002446 00000 n With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the rig. Safety chains should be secured to trailer(s). The pressure in the service line is controlled by the brake pedal and the trailer hand brake. Visually check to make sure that the rear trailer is slightly lower than the center of the you are driving at night and you must dim your headlights for traffic. Why is there still destructive interference? When uncoupling doubles or triples, what is important to know about unlocking the pintle hook? You are visually checking the coupling of a converter dolly to the rear trailer. Air will not be available to release the trailer spring brakes (parking brakes). Once that's complete, then its an easy push back and the Air pressure is sent from the air tanks to the brakes by relay valves. You should keep at least ____ seconds of space ahead of you. To prevent trailers from rolling over, you must steer gently and go slowly around corners, on ramps, off ramps and curves. Locking jaws closed on Typically depends on the axle count. Refers to pulling two trailers at the same time, otherwise known as "pups" or "pup trailers" because they're only about 28 feet long. The rear trailers shut-off valves should be closed and the front open. Which the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the trailer. Does a converter dolly have a separate air tank? - Wisdom-Advices When driving a truck with more than one trailer, which trailer should be first behind the truck? When you do this, you should hear: Ais escape from the open valve. 2) the second test is to go out to the trailer to ensure that the parking brakes have indeed applied. Antilock Braking Systems on Converter Dollies, Converter dollies built on or after March 1, 1998, are required to have antilock brakes. You should be sure the converter dolly air tank . 0000008187 00000 n What is a converter dolly? A Open, latched B Open, free C Closed, latched D Closed, free 28. Free CDL - Doubles and Triples Flashcards | Quizlet Stop the vehicle by gearing down and sparingly 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. which of these is not a good thing to do when driving on slippery roads? A. require shorter stopping distances than full ones If you're only pulling one trailer, the shut off valves should always be closed or else the air will simply escape out the back of the trailer. The emergency brakes come on whenever air pressure in the emergency line is lost. You are driving a triple trailer and there is a loss of air pressure in the emergency line. C The puzzle: At the far left edge, the plates are in contact, so the path length difference between rays 222 and 333 is zero. You should hear air escaping, showing the entire system is charged. However, converter dollies and trailers built before 1975 are not required to have spring brakes. The dolly tow bar may fly up, possibly causing injury, and making it very difficult to A converter dolly is still under the second trailer when you unlock the pintle hook. Please visit using a browser with javascript enabled. Please use the form below to contact our customer service or sales team. Question 3 Explanation: All of the above. 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. Allow much more space than is needed for ideal driving condition. 5. open, closed, closed: Term. C. 3, You are doing a walk around inspection of a double or triple trailer rig. 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. You should NOT: You are driving a set of doubles and a set of trailer wheels goes into a skid. What's a converter dolly? 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! You are driving a 100 ft twin trailer combination at 50 mph. 0000007032 00000 n Did you know you can fill out one quick form here on TruckingTruth and apply to several companies at once for paid CDL training? 4. When you are pulling trailers, which of the following statements is true about steering?

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