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

The A-dolly has a single drawbar with a single, centered hitching point. You should check the height of the trailer before connecting a converter dolly to a second or third trailer. When you're finished, check your score and results. If a converter dolly is still under the second trailer and you unlock the pintle hook, what will probably happen? B. johnson bar You want to lock your combination to a second trailer that has no spring brakes. C. always keep your vehicle to the left side of your lane, When testing the coupling of double trailers, the landing gear of the rear trailer should be: They provide the air pressure used to operate trailer brakes. What does the Driver's manual say about how much space you should keep ahead of your truck? You will have greater length and more dead axles to pull with your drive axles than other drivers. Join 50,000+ users around America to get your Commercial Driver License today! If loading fails, click here to try again. TestPermit.com provides free unofficial review materials for a variety of exams. The word part ferrit- means: A. open You may be timed. Doubles and triples are more likely to overturn than other combination vehicles because of the whip cracking effect. 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. What does the Commercial Driver Handbook say about how much space you should keep ahead of your truck? Email Updates When New Articles Are Posted. during normal operation the brakes of the double/triple trailer are controlled by : which of these will result in the best control on curves? Make sure you do not get in a spot you cannot pull straight through. Visually check to make sure that the rear trailer is slightly lower than the center of the The rear trailer of a triple you should check the trailer height before connecting a converter dolly to a second or third trailer. A. opening the air tank petcock If there are no dummy couplers, the glad hands can sometimes be locked together (depending on the couplings). They provide the air pressure used to operate trailer brakes. When turning a double or triple at an intersection, the turn often cannot be completed without swinging wide. When you do this, you should hear: you are driving with double trailer and must use your brakes to avoid a crash. You open the emergency line shut-off valve at the rear of the last trailer and hear air escaping. Clean the couplers and rubber seals before a connection is made. When does the Driver's manual say you should disable the steering axle brake? If spare tire is carried on converter gear (dolly), make sure it's secured. The dolly will have a yellow lamp on the drivers (left) side. 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. Air escape from the open valve 3. 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. A 0000006015 00000 n Study section 6.2 if you can't answer all of these questions. B. do not need to be checked as often as flat mirrors because they show a larger area 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 trailer height is right when: The trailer will be raised slightly when the converter dolly is backed under it. C C B. keep gentle pressure on the brakes while going through the water and for a short distance after coming out A bent or damaged kingpin on a coupling should be? 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? Release Dolly breaks by opening the air tank petcock or if the dolly has a spring break, use the Dolly parking brake control . Go to the rear of second trailer and open the emergency line shut-of valve. Allow more following distance. Which of the following will probably happen if you are driving a double rig and a set of trailer wheels goes into a skid? When you do this, you should hear: Ais escape from the open valve. Also available in App Store & Google Play. You are driving a triple trailer and there is a loss of air pressure in the emergency line. The number and size of air tanks varies among vehicles. King pin. Learn more and apply here: The more heavily loaded semitrailer should be in first position behind the tractor. Unless you are draining the condensation out of the air tank, then the drain valve All material on this website is copyrighted. 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. In normal operation, trailer service brakes should be operated by? A. air escape from the open valve c. iron That there is no space between upper and lower fifth wheel. The heavier trailer should be in the rear. 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. True! A. brake and downshift in a curve When uncoupling a rear trailer, your rig should be parked in a straight line on? You can find it here: High Road 2.0. You are driving a 100-feet truck with double trailers at 30 mph. 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. can and will get stuck on a raised railroad crossing. 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. Some large trucks have curved (convex or spot) mirrors. Connect Converter Dolly to Rear Trailer Make sure trailer brakes are locked and/or wheels chocked. 5. Each trailer and converter dolly has one or more air tanks. The rear trailers shut-off valves should be open and the front closed. Blue is used for the service lines, and red for the emergency (supply) lines. You are driving a 100 foot twin trailer combination at 50 mph. You are doing a walk around inspection of a double or triple trailer rig. Mar 2 - Mar 3. 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. How can you be sure you supplied air to a second trailer? You are visually checking the coupling of a converter dolly to the rear trailer. You shouldn't stop braking. 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. If there is a trailer Converter dollies are connected to front trailers with a? Open the emergency line shut-off valve at the rear of the last trailer. Any trailer, 7. 0000010285 00000 n You should hear air escaping, showing the entire system is charged. 3. CDL Doubles and Triples Test Question and Answers 2023 [PDF]: Commercial Drivers License Doubles and Triples Endorsements Knowledge Test. 2. 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. 0000008915 00000 n When driving doubles or triples how should they be driven to avoid rollover or jackknifing: B. keep other traffic out of your side space On double and triple combinations, you must make sure that which of these is secure? you can fuck a pornstar craigslist cars and trucks for sale by owner; kd linear actuator kdpt007 what is ait in the army; native american spiritual cleansing prayer simple spectrum coupon code; . Hook dolly to front trailer. It is important not to let water and oil build up in the air tanks. 21 0 obj << /Linearized 1 /O 23 /H [ 1162 213 ] /L 29759 /E 11109 /N 7 /T 29221 >> endobj xref 21 38 0000000016 00000 n when does the drivers manual say you should disable the steering axle brakes? Page 7-6 Commercial Driver's Manual/2.0 = Be sure air lines are supported and glad hands are properly connected. The tanks will hold enough air to allow the brakes to be used several times even if the compressor stops working. Like a trailer, a dolly equipped with ABS will have a yellow indicator light on the left side. 10 B You should be sure the converter dolly air tank . (done) Chp 23: Cash Flow + Working Capital, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. 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? 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. Some do. Learn more and apply here: TruckingTruth was founded by Brett Aquila (that's me! Definition. Sometimes, metal tags are attached to the lines with the words service and emergency stamped on them. d. protein. That there is some space between the upper and lower fifth wheel. on kingpin. When the road is dry In the coupling system, the locking jaws should be fixed around? Which of these statements about managing space to the sides is true? A connection device of one axle used to disconnect a semitrailer combination vehicle Never unlock the pintle hook with the dolly still under the rear trailer. Which trailer should come first behind the tractor? Close the emergency line shut-off valve at the rear of the trailer. This will prevent water and dirt from getting into the coupler and the air lines. A. open the shut-off valves at the rear of both trailers What happens if you cross the Emergency Air Line and the Service Air Line? Be certain you are clear at the sides before changing lanes. Take special care when pulling two and three trailers. what is likely to happen if the pintle hook is unlocked with the dolly still under the second trailer? Number of wrong answers. B 9. 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. you are driving on a slippery road during the day. The driver must yield the right-of-way to other vehicles when merging and when entering a highway from an alley. They are filled by the emergency (supply) line from the tractor. When driving a double or triple trailer, greater care must be given to. The rear trailers shut-off valves should be closed and the front open. 0000003998 00000 n dress gifs. With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the rig. Which of these is most likely to occur? air throughout the system. All ABS equipped units The converter dolly is an auxiliary axle with a coupling device. Air pressure is sent from the air tanks to the brakes by relay valves. To prevent trailers from rolling over, you must steer gently and go slowly around corners, on ramps, off ramps and curves. utilize the brakes. You can reset the test and retake it as needed. You can also reach us at (888) 830-2326. The pintle hook should always be secure when the vehicle is in motion. You need to be aware of how parking lots are arranged in order to avoid a long and difficult escape. When uncoupling doubles or triples, what is important to know about unlocking the pintle hook? If it goes low enough, the trailer emergency brakes will come on. 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. Newer trailers have spring brakes just like trucks and truck tractors. You should keep at least _____ seconds of space ahead of you. Converter dolly air tank drain valve: CLOSED. These valves permit closing the air lines off when another trailer is not being towed. 1/2 to 3/4 of an inch Should the shut-off valves on the trailers be open or closed on a set of double trailers? When doing a walkaround inspection of a double or triple trailer, the shut-off valves should be _______ at the rear(s) of the front trailer(s) and ________ at the rear of the last trailer. Air escape from the open valve You are driving with double trailers and must use your brakes to avoid a crash. When you're trying to correct a drive-wheel braking skid why should you stop braking? Locking jaws closed on Contributor: Luke Nold (Experienced truck driver for 5+ years and published writer for Fleet Magazine). C. 3, You are doing a walk around inspection of a double or triple trailer rig. There are more things that can go wrong, and doubles/triples are less stable than other commercial vehicles. If the spring brakes do not release when you push the trailer air supply control, check the air line connections. Should the converter dolly air-tank drain valve be open or closed on a double trailer combination? B True False True If you want to couple a second trailer to you combiantion vehicle, secure it by using the: Trailer emergency air brakes. which of these statements about the handling of doubles and triples is true ? The rear trailer of a double Which of these are the correct positions for shut-off valves in doubles and triples? The dolly tow bar may flip up causing bodily injury and making it very difficult to 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. Those that do not have spring brakes have emergency brakes that work from the air stored in the trailer air tank. You must stop, yield to traffic and pedestrians, and only proceed when safe. speed and start spinning again, in turn stopping your skid, All the listed answers would be correct. B. allow one vehicle length for every 10,000 lbs of gross vehicle weight you should not, when you turn with the tractor/triple trailer combination the wheels that offtrack(cheat) the most are. How many different ways of coupling and uncoupling trailer combinations are there? Any vehicle required by federal regulations to be placarded while transporting hazardous materials. A. use a low gear How To Use Cruise Control Effectively As A Truck Driver. Pull gently against the pin of the second trailer. Converter dolly air tank drain valve: CLOSED. A. use light, steady pressure on the brake pedal What is a converter dolly? The pressure in the service line is controlled by the brake pedal and the trailer hand brake. When only pulling one trailer, be sure the shut-off valves are all in the fully closed position. 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. Hb```f``b`c``e@ (Q6_* 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 _______. 0000001107 00000 n You are driving a tractor with multiple trailers. For all brakes to work on a triple combination, you must have air supply? Calculate the Mach number at section 2. Once that's complete, then its an easy push back and the There is a school zone ahead. The dolly tow bar may fly up, possibly causing injury and making it very difficult to re-couple. Before you can supply air to the air tanks of a second trailer you need to. What is a converter dolly? Slow to the safe speed before entering, then accelerate slightly through the curve. 1. Doubles and triples are more likely to turn over than other combination vehicles because of the "crack- the-whip" effect. The front trailer in a set of double trailers is most likely to turn over due to the Crack-the-Whip effect. 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? Make sure you have large enough gaps before entering or crossing traffic. Never, 9. Allow much more space than is needed for ideal driving condition. Make sure trailer height is correct. With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the rig. The shut off valves, when in the open position, allows air to flow out to another trailer. the trailer height is right when: the trailer will be raised slightly when the converter dolly is backed under it. We'll help you make the right choices and prepare for a great start to your trucking career. If you are only pulling one trailer, make certain the valve is fully in the closed position or it will leak air out of the air system. These mirrors: A. closed; latched B. for doubles and triples, the fifth wheel should be all the way towards the tractor 2 Ship to Store. 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. require shorter stopping distances than full ones 0000007487 00000 n Which of the following will occur? The dolly tow bar may fly up The emergency brakes come on whenever the air supply knob is pulled out or the trailer is disconnected. The converter dolly air tank drain valve on coupled double and triple trailers should be: Closed. These mirrors: make things seem smaller & further away then they really are. C Their drawbars differentiate them. you want to hook your combination to a second trailer that has no spring brakes. However there are some states that allow doubles that are each 48 feet in length. D The service air line is only used to control the service brakes (when you press on the brake pedal or use the trailer hand-valve). A dolly has lights, air tanks, air relays, air lines, air brakes, ABS, electrical connections, etc. Once you are finished, click the button below. Seriously! Which the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the trailer. If your converter dolly has to be moved over a distance to bring it to your semitrailer, you should? [California Commercial Driver Handbook] The weight of a truck: Is a major factor affecting stopping distance. The shortest trailer Charge the system and pump the brakes with the window down. not have spring brakes. A. make things look smaller and farther away than they really are You should NOT: You are driving a set of doubles and a set of trailer wheels goes into a skid. All of the above, 6. A Lock pintle hook. If there is door. retrovirus $_____________________________$. A. allow "much more space" than is needed for ideal driving conditions B. slightly open Provides a snug fit to eliminate unwanted seepage of air or water. A Commercial Drivers License Overview, Trucking Terminology and Transportation Definitions. The number of correct answers. These dollies will have a yellow lamp on the left side of the dolly. Please use the form below to contact our customer service or sales team. the converter dolly air tank drain valve on couple double/triple trailers should be: to check if the converter dolly is securely coupled to the rear trailer you should: pull gently against the pin of the second trailer. 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 A turn of the glad hand attached to the hose will join and lock the couplers. If the air supply in the trailer air tank has leaked away, there will be no emergency brakes, and the trailer wheels will turn freely. and the converter dolly air tank drain valve should be _____. kingpin, That there is grease between upper and lower fifth wheel. Take this same test in our other testing modes How to Get a Hazardous Materials Endorsement, What is a CDL? Pickup at South Loop. 9 D. Make sure the spare tire is secured, if it has one. C. use controlled or stab braking, The best way to stop any skid is to: Doubles/triples flip flop over from quick steering moves more easily than many vehicles. Air pressure is sent from the air tanks to the brakes by relay valves. C You should keep at least ____ seconds of space ahead of you. Why should you pull a dolly out from under a trailer before you disconnect it from the trailer in front? C. closed, You can release the dolly brakes by: [Flashing Signals, Traffic Signals, Chapter 5 - Signals, Signs and Pavement Markings, North Carolina Driver's Handbook], One component of the DUI sentence in the state of Tennessee is twenty-four hours of litter pick-up wearing clothing that says "I am a drunk driver." Good speed management says you should: You must drive through deep or flowing water. What does the drivers manual say about how much space you should keep ahead of your truck? 0000008166 00000 n to do this without wheel chocks you should: supply air to the trailer air system with the tractor and then disconnect the emergency line. Please wait while the activity loads. This would be very dangerous. The total number of questions. The road is dry, and visibility is good. If not, there is a problem. C. may have poor traction due to bouncing and wheel lockup, Before you can supply air to the air tanks of a second trailer you need to: What value of channel width must the design use? A) closed . you should avoid traveling next to others when possible. Calculate the net energy change in kilojoules per mole that takes place on formation of MgF2_22(s) from the elements: Heat of sublimation for Mg(s) = 147.7 kJ/mol Eea_{ea}ea for F(g) = -328 kJ>mol, Bond dissociation energy for F2_22(g) = 158 kJ>mol Ei1_{i1}i1 for Mg(g) = 737.7 kJ>mol, Electrostatic interactions in MgF2_22(s) = -2957 kJ/mol Ei2_{i2}i2 for Mg(g) = 1450.7 kJ/mol. you are driving a 100ft truck eith double trailers at 50mph. should remain in the closed position. A dolly is like a very short trailer, with a ring hitch on the front and a fifth wheel on top. 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. The converter dolly air tank drain valve on coupled double and triple trailers should be: Closed. You should be sure the converter dolly air tank drain valves are _______ and the pintle hook is _____. 0000007508 00000 n good speed management says you should, may have poor traction due to bouncing and wheel lock up. For emergency braking you should: You MUST have air all the way to the back for all the brakes to work. The driver will be required to complete this requirement in three eight hour shifts. . What should you check for when inspecting a converter dolly? 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? Time used (Requires timer add on). Safety chains secured to trailer (s). 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. Disconnect the glad-hand at the front of the first trailer and listen for air flow. You should hear air escaping, showing the entire system is charged. Visually check to make sure that the lead trailer is slightly higher than the center of The coupling between a rear trailer and a dolly should have a space between the upper and lower fifth wheels of? C. make things look larger and closer to you than they really are, When hauling triple trailers at a speed less than 40 mph, you should leave at least _____ second(s) for every ten feet of your truck between you and the vehicles ahead of you. Hit the article to see the way to back up your trailer like a pro! B Therefore, look far ahead so you can slow down or change lanes gradually when necessary. 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. . A full trailer behind a truck These valves permit closing the air lines off when another trailer is not being towed. For emergency braking you should: A Push the brake pedal as hard as you can and hold it there B B C. use a light touch on the accelerator and brake pedals, For coupled double and triple trailers, all of the converter dolly shut-off valves should be: C. fully raised, Which of these statements about speed management and braking is true? Safety should never take second place, so know your stuff! 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