the converter dolly air tank drain valve should be

Their drawbars differentiate them. weather passes. A. use a low gear Use only the trailer brakes 0000001582 00000 n When the road is slippery If you have traffic on both sides of your vehicle and something is blocking your lane, a move to the right still be best. Push the brake pedal as hard as you can and hold it there ), a 15 year truck driving veteran, in January 2007. By using this site, you agree to be bound by our Terms of Use, Privacy Policy and Cookie Policy, Copyright 2000-2023 MH Sub I, LLC dba Internet Brands. To test the tractor protection valve, charge the trailer air brake system, turn off the engine, and 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 They are filled by the emergency (supply) line from the tractor. On double and triple combinations, you must make sure that which of these is secure? Make sure you can hear air escaping with the valve closed. B D [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]. CDL Doubles and Triples Test Question and Answers 2023 [PDF]: Commercial Drivers License Doubles and Triples Endorsements Knowledge Test. When coupling twin trailers, a converter dolly is. can and will get stuck on a raised railroad crossing. All ABS equipped units trailer << /Size 59 /Info 20 0 R /Root 22 0 R /Prev 29211 /ID[] >> startxref 0 %%EOF 22 0 obj << /Type /Catalog /Pages 19 0 R >> endobj 57 0 obj << /S 66 /Filter /FlateDecode /Length 58 0 R >> stream A. closed; latched The shut off valves prevent air from going any further. 0000001354 00000 n Air flows steadily and isentropically through a passage. Converter dolly air tank drain valve: CLOSED. Any trailer, 7. Make sure you have large enough gaps before entering or crossing traffic. Locking jaws closed on You are driving a 100 ft twin trailer combination at 50 mph. Florida CDL Handbook | FL CDL Handbook Coupling & Uncoupling for You are driving with double trailers and must use your brakes to avoid a crash. 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 _____. These valves permit closing the air lines off when another trailer is not being towed. 0000010705 00000 n 0000001107 00000 n b. cell When uncoupling doubles or triples, what is important to know about unlocking the pintle hook? to do this without wheel chocks you should: supply air to the trailer air system with the tractor and then disconnect the emergency line. 4. CDL Doubles and Triples Test Question and Answers Types of converter dollies. The total number of questions. Locking jaws open Driving doubles/triples is also more dangerous in hot and cold weather driving, as well as on mountain roads. The emergency line valve open and release air They are filled by the emergency (supply) line from the tractor. locked . You should be sure the converter dolly air tank drain valves are _____ and the pintle hook is ____. The DMV doubles triples practice test will examine your knowledge of pulling double/triple trailers, coupling and uncoupling, inspecting doubles and triples, and checking air brakes. King pin. That split second that you release the brakes will allow them to match the vehicles road 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: (done) Chp 23: Cash Flow + Working Capital, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. These mirrors: You are driving with double trailers and must use your brakes to avoid a crash. 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. The pressure in the service line is controlled by the brake pedal and the trailer hand brake. Charge the system and pump the brakes with the window down. 8. Open the emergency line shut-off valve at the rear of the last trailer. Like a trailer, a dolly equipped with ABS will have a yellow indicator light on the left side. Doubles and triples are more likely to overturn than other combination vehicles because of the whip cracking effect. All other trailer air functions use the emergency 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. We'll help you make the right choices and prepare for a great start to your trucking career. In a certain electronic device, a three-stage amplifier is desired, whose overall voltage gain is 42 dB. 0000001956 00000 n How can you test that air flows to all trailers? D They provide the air pressure used to operate trailer brakes. At section 1, where the cross-sectional area is 0.02 m2m^{2}m2, the air is at 40.0 kPa (abs), 60C60^{\circ} \mathrm{C}60C, and M=2.0. To check that the trailer emergency brakes are working properly, you should pull out the trailer air supply control and? The number and size of air tanks varies among vehicles. Which of these statements about the handling of doubles and triples is true? Dobles - Triples Pruebas de prctica 3 - NJ 2023 - CristCDL.com CDL Doubles & Triples Practice Test 3 - Classic Mode - Trucker Country Then, the air loss from the leak will lower the air tank pressure quickly. You can reset the test and retake it as needed. The road is dry and the visibility is good. Allow more following distance. mTouch Quiz will automatically populate the fields below. In double and triple trailers, the trailer air supply control should pop or _________ when air pressure drops into the range of 20 to 45 psi. The pressure in the service line tells how much pressure the relay valves should send to the trailer brakes. All trademarks are property of their respective owners. If spare tire is carried on converter gear (dolly), make sure it's secured. during normal operation the brakes of the double/triple trailer are controlled by : which of these will result in the best control on curves? Disconnect the glad-hand at the front of the first trailer and listen for air flow. Page 7-6 Commercial Driver's Manual/2.0 = Be sure air lines are supported and glad hands are properly connected. Open the shut-off valves at the rear of the last trailer and listen for air flow. 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 _______. Your tractor protection valve control should pop out, or go from normal to emergency position, when air pressure falls into what range? kingpin, That there is grease between upper and lower fifth wheel. Trailer Parts Superstore - How Air Brakes Work - Eastern Marine 0000001775 00000 n B. you should avoid traveling next to others whenever possible When checking the coupling system, make sure that the locking jaws are around the shank of the. 2) the second test is to go out to the trailer to ensure that the parking brakes have indeed applied. Some large trucks have curved (convex or spot) mirrors. A. completely open dress gifs. When driving with more than one trailer, which trailer should be the first one behind the tractor? You must stop, yield to traffic and pedestrians, and only proceed when safe. If the dolly is a two axle unit then 1 you are visually checking the coupling of a converter dolly to the rear trailer. Which of the following will occur? A dolly is like a very short trailer, with a ring hitch on the front and a fifth wheel on top. Blue is used for the service lines, and red for the emergency (supply) lines. You should keep at least ____ seconds of space ahead of you. Either the front or the rear brakes will not work properly or fully. When pulling a single trailer with a Shut-Off Valve, the valves must be in the: Trailers built before what year may not be equipped with trailer spring brakes? Visually check to make sure that the rear trailer is slightly lower than the center of the you are doing a walkaround inspection of a double or triple trailer rig. 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. 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. 0000001375 00000 n Usually need a glad hand converter A dolly has lights, air tanks, air relays, air lines, air brakes, ABS, electrical connections, etc. Make sure the converter dolly air tank drain valve is closed. The application only takes one minute. 27. Doubles and triples are extremely prone to control issues and must be Which of the following must be connected when coupling tractor to trailer or trailer to trailer? Stop the vehicle by gearing down and sparingly What three methods can you use to secure a second trailer before coupling? The road is dry and visibility is good. 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. To prevent trailers from rolling over, you must steer gently and go slowly around corners, on ramps, off ramps and curves. the fifth wheel, so trailer is raised slightly when dolly is pushed under it. Dont hesitate to take advantage of our practice tests in each category specific to your needs. When uncoupling a rear trailer, you should remove some weight from the dolly by? If loading fails, click here to try again. It depends on the load The pintle hook? For emergency braking you should: which of these statements about emergency steering is true? Some areas of concern are discussed below. This means. B B. slightly open you should check the trailer height before connecting a converter dolly to a second or third trailer. You should keep at least ____ seconds of space ahead of you. 0000004689 00000 n What should you check for when inspecting the converter dolly? you are driving a 100ft truck eith double trailers at 50mph. Make a sketch that explains this phenomenon in terms of a feedback loop . To do this without wheel chocks you should: Empty trucks: When parking your double or triple combination, you should look for a parking space There is a school zone ahead. That there is no space between upper and lower sixth wheel. It's a fifth wheel, not a sixth wheel. It is very important to keep the air supply clean. D What is the most common foundation brake found on heavy vehicles? 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. A) one inch of space . The road is dry and the visibility is good. The road is dry, and visibility is good. If there is Select the answer that correctly completes each statement. You are visually checking the coupling of a converter dolly to the rear trailer. 9 Questions You Must Ask, Decide if Truck Driving is The Correct Career Path, Do Not Sell or Share My Personal Information. Compressed air usually has some water and some compressor oil in it. You open the emergency line shut-off valve at the rear of the last trailer and hear air escaping. True or False? Flammable materials in the front trailer then it must have the placards on that trailer. The Verge logo. Each trailer and converter dolly has one or more air tanks. Doubles Triples Endorsement Test Flashcards | Quizlet If the converter dolly is close to your semitrailer, you should wheel it into position? and the converter dolly air tank drain valve should be _____. You should check the height of the trailer before connecting a converter dolly to a second or third trailer. B. johnson bar The converter dolly air tank drain valve on coupled double/triple trailers should be: Closed. which of these figures shows how the turn should be made, if you want to couple a second trailer to your combination vehicle, secure it by, the trailers spring brakes & wheel chocks. When only pulling one trailer, be sure the shut-off valves are all in the fully closed position. How should the converter dolly air tank drain valve on coupled double How should you test the coupling? If you are driving a 200-foot triple at 35 mph, what is the minimum amount of space (in seconds) that you should keep ahead of you? The application only takes one minute. A. always keep your vehicle to the right side of your lane Double and Triples Part 1 Flashcards - flashcardmachine.com This has the same value as the %%PERCENTAGE%% Variable on the Final Screen. Open the emergency line shut-off valve at the rear of the last trailer. Also available in App Store & Google Play. Each trailer and converter dolly has one or more air tanks. For emergency braking you should: Use controlled or stab braking Converter dollies: Often do not have spring brakes The crack the whip effect that troubles trucks with trailers. 3. Remember: The trailer air brakes are supplied with air using the emergency line (also called the supply line). 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 converter dolly air tank drain valve on coupled double and triple trailers should be: Closed. In order to receive your Doubles and Triples endorsement, it is required that you pass the states official CDL written Knowledge exam. C The road is dry and visibility is good. 0000005554 00000 n 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. 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: Check them all. A. you can steer more quickly and safely if you hold the wheel with one hand This is CDL Doubles and Triples Test 3in our original Classic Mode. Tractor-trailers are considered combination vehicles. safe speed would be 40 MPH. 1 What should you check for when inspecting a converter dolly - Answers The emergency brakes come on whenever air pressure in the emergency line is lost. the rig will continue moving in a straight line no matter how much the steering wheel is turned. B. are the easiest to stop since there is no shifting cargo When uncoupling the converter dolly Why should you never unhook the Air pressure is sent from the air tanks to the brakes by relay valves. Time allowed (Requires timer add on). 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? You are driving a triple trailer and there is a loss of air pressure in the emergency line. When connecting a converter dolly to a rear trailer, the trailer height must be adjusted so that it is? Make sure pintle hook is latched. Each trailer and converter dolly has one or more air tanks. Please visit using a browser with javascript enabled. A. use light, steady pressure on the brake pedal Therefor, if there is a major leak in your service line, you may not know it until you try to use the service brake. You must steer gently when pulling trailers. The tanks will hold enough air to allow the brakes to be used several times even if the compressor stops working. Number of wrong answers. 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. You will not be tested on uncoupling twins unless you want to get a double/triple trailer endorsement on your license. The dolly tow bar may fly up All material on this website is copyrighted. If you do, the brakes may not work correctly. 0000003977 00000 n 2022 DE Doubles - Triples CDL Quick Review 1 - CristCDL.com The trailer height is right when: The trailer will be raised slightly when the converter dolly is backed under it. PDF Section 7: Doubles and Triples - CDL Study When does the "driver's manual" advise disconnecting the steering axle brakes to help keep the rig straight? Be sure air-lines are supported and glad hands are properly connected. When turning a double or triple at an intersection, the turn often cannot be completed without swinging wide. At section 2 downstream, the speed is 519 m/s. Doubles and triples are more likely to turn over than other combination vehicles because of the "crack-the-whip" effect. Time used (Requires timer add on). Why is there still destructive interference? 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. use stab or controlled braking, Which of these is true? _______ should be tested with the hand valve but controlled in normal operation with the foot pedal. speed and start spinning again, in turn stopping your skid, All the listed answers would be correct. This has the same value as the %%SCORE%% Variable on the Final Screen. You should not hear air escaping. When driving a double or triple trailer, greater care must be given to. not have spring brakes. paramount to safe driving. Typically depends on the axle count. You are driving a tractor with multiple trailers. Visually check to make sure that the lead trailer is slightly higher than the center of Connect Converter Dolly to Front Trailer Back first semitrailer into position in front of dolly tongue. We wish you the best of luck in your endeavors and are pleased to be of assistance. Be more careful in adverse conditions. In normal operation, trailer service brakes should be operated by? Never pull any trailer without visually inspecting the fifth wheel locking bar By clicking on "Sign Up", you agree to our Terms of Use and Privacy Policy. The air lines will rupture The pintle hook should always be secure when the vehicle is in motion. What is one function of the tractor protection valve? which of these statements about quick steering movements and doubles/triples is true? In order to supply air to the air tanks of a second trailer, you must ______ shut-off valves at the rear of the first trailer and ________ the shut-off valves at the rear of the second trailer. coupled to the rear of a tractor-trailer combination forming a double bottom rig, A coupling device of one or two axles and a sixth wheel by which a semitrailer can be Please wait while the activity loads. C. closed; unlatched, Which of these will result in the best control on a curve? 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. When inspecting a converter dolly What should you check for? You are driving with double trailers and must use your brakes to avoid a crash. Converter dollies: A Try our free CDL Doubles and Triples Test Question and Answers Quiz online. Ship to Store. A bent or damaged kingpin on a coupling should be? The crack the whip effect will topple the rear trailer first. Explore now! You should be sure the converter dolly air tank drain valves are _______ and the pintle hook is _____. The front trailer in a set of double trailers is most likely to turn over due to the Crack-the-Whip effect. After 15 years on the road I wanted to help people understand the trucking industry and everything that came with the career and lifestyle of an over the road trucker. 12, 3. A 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? When you go to the rear of the last trailer, what should you do to complete this check? Good speed management says you should: You must drive through deep or flowing water. A You should be sure the converter dolly air tank drain valves are _____ and the pintle hook is _____. 6. Tips for Backing Up a Trailer Like a Pro Trucker. The service brakes slowly move to the fully applied position Pintle hook latched. air throughout the system. Take this same test in our other testing modes How to Get a Hazardous Materials Endorsement, What is a CDL? How can you be sure you supplied air to a second trailer? You should NOT: A. air escape from the open valve To check air flows to all trailers, you should let air pressure reach normal then? securely fastened. They provide the air pressure used to operate trailer brakes. B. closed You should be sure the converter dolly air tank drain valves are ____ and the pintle hook is ____. slow to safe speed before entering, then accelerate slightly through the curve. allow "much more space than is needed for ideal driving conditions". Trucks with trailers have a dangerous crack-the-whip effect. Which is most likely to tip over: If you want to couple a second trailer to your combination vehicle, secure it by using: The crack-the-whip effect that troubles trucks with trailers is most likely to cause a tip over: You are driving on a slippery road during the day. 0000007487 00000 n The coupling between a rear trailer and a dolly should have a space between the upper and lower fifth wheels of? 5. rear brakes will not work properly. to re-capture it. The rear trailer of a triple What value of channel width must the design use? A green traffic light allows the driver to go. True! 0000010783 00000 n B. the emergency line valve open and release air They provide the air pressure used to operate trailer brakes. and possible answers include: open, free or closed, latched or closed, free or open, latched from TruckersDouble & Triple Trailer (CDL) Endorsement. You should be sure the converter dolly air tank . Slow to the safe speed before entering, then accelerate slightly through the curve. A Question 4. Have little braking power because they are small how can you be sure you supplied air to a second trailer? 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? Mar 2 - Mar 3.

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