the converter dolly air tank drain valve should be

Our normal business hours are Monday-Friday 8 a.m. to 5 p.m. (Pacific Time). The road is dry, and visibility is good. Safety chains secured to trailer (s). 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. air throughout the system. D Always unlock the pintle hook with the dolly still under the rear trailer. Visually check to make sure that the rear trailer is slightly lower than the center of the 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. What is a converter dolly? 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]. The road is dry and visibility is good. Therefore, it is very important for safety that you use wheel chocks when you park trailers without spring brakes. You should hear air escaping, showing the entire system is charged. Have little braking power because they are small 0000005345 00000 n 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 crack the whip effect that troubles trucks with trailers. To do this without wheels chocks you should: Supply air to the trailer air system with the tractor and then disconnect the emergency line. The trailer brakes will unlock Each trailer and converter dolly has one or more air tanks. What is likely to happen? You should keep at least ____ seconds of space ahead of you. 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. 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? The road is dry and visibility is good. 12, 3. A. fully lowered For emergency braking you should: TestPermit.com is not affiliated, endorsed, or sponsored by state agencies or any motor vehicle and any other departments in the United States, Canada, UK. 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. Make sure trailer height is correct. coupled to the rear of a tractor-trailer combination forming a double bottom rig, Careful of the wording! A safe speed on a curve for a straight truck or a single trailer combination vehicle may be too fast for a set of doubles or triples. you are driving at night and you must dim your headlights for traffic. ), a 15 year truck driving veteran, in January 2007. 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. with the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the trailer. 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 Any vehicle, regardless of size, designed to transport 16 or more persons, including the driver. Be sure pintle-eye of dolly is in place in pintle hook of trailer(s). Remember however, that is just a suggestion. A Delivering to. if you have traffic on both sides of your vehicle and something is blocking your lane, a move to the right still be best. This is CDL Doubles and Triples Test 3in our original Classic Mode. What's a converter dolly? paramount to safe driving. Wait for air pressure to reach normal, then push in the red trailer air supply knob. You should keep at least ___ seconds of space ahead of you. 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? A. you can steer more quickly and safely if you hold the wheel with one hand None of the above, 4. d. protein. Which is most likely to tip over: Always test the trailer brakes before driving with the hand valve or by pulling the air supply (tractor protection valve) control. If there is a trailer B Each tank has a drain valve on it, and you should drain each tank every day. Use the engine brake or speed retarder. Safety chains should be secured to trailer(s). Slow to the safe speed before entering, then accelerate slightly through the curve. Which of the following is true about loading cargo into double or triple trailers? Air pressure is sent from the air tanks to the brakes by relay valves. Unless you are draining the condensation out of the air tank, then the drain valve Opening the shut off valves on the rear most trailer will ensure the lines are flowing Antilock Braking Systems on Converter Dollies, Converter dollies built on or after March 1, 1998, are required to have antilock brakes. The last trailer in a combination is most likely to turn over. They are filled by the emergency (supply) line from the tractor. C ADVERTISEMENT ADVERTISEMENT They provide the air pressure used to operate trailer brakes. All ABS equipped units By clicking the ["Send"] button, you agree to our Terms of Use and Privacy Policy, and to the use of cookies described therein, and you also consent to the collection, storage, and processing of your data in the United States where the level of data protection may be different from that in your country. Stop the vehicle by gearing down and sparingly A Locking jaws closed on What three methods can you use to secure a second trailer before coupling? Park the rear trailer against another trailer, chock the tires and lock the trailer 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. Visually check to make sure that the lead trailer is slightly higher than the center of C. closed; unlatched, Which of these will result in the best control on a curve? 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: They provide the air pressure used to operate trailer brakes. Locking jaws closed on You can reset the test and retake it as needed. There is no obligation whatsoever. 2. These mirrors: Make things seem smaller and further away than they really are. The Verge logo. The rear trailers shut off valves should be closed and the front open to allow air to the 10 The rear trailers shut-off valves should be open and the front closed. C. use controlled or stab braking, The best way to stop any skid is to: Connect Converter Dolly to Rear Trailer Make sure trailer brakes are locked and/or wheels chocked. Hb```f``b`c``e@ (Q6_* The converter dolly air tank drain valve on coupled double/triple trailers should be: Answer: Closed. 0000005733 00000 n you are doing a walkaround inspection of a double or triple trailer rig. Remember, the service line is not used unless you depress the brake pedal or use the trailer hand valve. 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. 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. Pintle hook latched. 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. These valves permit closing the air lines off when another trailer is not being towed. That there is no space between upper and lower fifth wheel. Converter dolly air tank drain valve: CLOSED. Calculate the Mach number at section 2. This has the same value as the %%TOTAL%% Variable on the Final Screen. 0000007032 00000 n 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. you should keep atleast __seconds of space ahead of you. Your vehicle is so long that you must swing wide to make the turn. to do this without wheel chocks you should: supply air to the trailer air system with the tractor and then disconnect the emergency line. 0000006836 00000 n When coupling, be sure to couple the proper glad hands together. 0000007487 00000 n Open. 11 speed and start spinning again, in turn stopping your skid, All the listed answers would be correct. A. opening the air tank petcock B. use only the trailer brakes Lock pintle hook. 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: You are doing a walk around inspection of a double or triple trailer rig. 0000005664 00000 n 1 If you have traffic on both sides of your vehicle and something is blocking your lane, a move to the right still be best. You are driving a 100-feet truck with double trailers at 50 mph. With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the rig. If spare tire is on converter gear (dolly), make sure it is secured. [California Commercial Driver Handbook] The weight of a truck: Is a major factor affecting stopping distance. 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. How do you know if your converter dolly is equipped with antilock brakes? With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the rig. A converter dolly is a piece of equipment designed to allow commercial trucks, such as semi-trucks, to pull a trailer. unsafe slow down even further, or better yet, find a safe haven and park until the The weight of the individual trailers will have no noticeable effect on the handling of the vehicle, The weight of all trailers should be nearly the same, within 2% of each other. 0000006195 00000 n C You should be sure the converter dolly air tank drain valves are ____ and the pintle hook is ____. The trailer height is right when: The trailer will be raised slightly when the converter dolly is backed under it. 60607. The trailer height is right when: The trailer will be raised slightly when the converter dolly is backed under it. In a certain electronic device, a three-stage amplifier is desired, whose overall voltage gain is 42 dB. 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. How many different ways of coupling and uncoupling trailer combinations are there? Open When checking your air lines, they must be secure and? A CDL is required to drive any of the following vehicles: A vehicle with two separate parts - the power unit (tractor) and the trailer. What is a converter dolly? Air flows steadily and isentropically through a passage. Which the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the trailer. how much space should be between the upper and lower fifth wheel? In normal operation, trailer service brakes should be operated by? You are driving with double trailers and must use your brakes to avoid a crash. 3. These valves permit closing the air lines off when another trailer is not being towed. 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. B C Allow much more space than is needed for ideal driving condition. Newer trailers have spring brakes just like trucks and truck tractors. Push the brake pedal as hard as you can and hold it there A. allow "much more space" than is needed for ideal driving conditions Take special care when pulling two and three trailers. Study section 6.2 if you can't answer all of these questions. Therefor, if there is a major leak in your service line, you may not know it until you try to use the service brake. Locking jaws closed on B. keep gentle pressure on the brakes while going through the water and for a short distance after coming out You must stop, yield to traffic and pedestrians, and only proceed when safe. 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. A 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. Watch the wording of the question AND the answers A safe driver will look for all of the above. The number of correct answers. Submit your email at the end of the test. How do you check to make sure trailer height is correct before coupling? B. slow to a safe speed before entering the curve, then accelerate slightly through it . The puzzle: At the far left edge, the plates are in contact, so the path length difference between rays 222 and 333 is zero. The tanks will hold enough air to allow the brakes to be used several times even if the compressor stops working. The coupling between a rear trailer and a dolly should have a space between the upper and lower fifth wheels of? B. do not need to be checked as often as flat mirrors because they show a larger area Doubles and triples take up more space than other commercial vehicles. 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. 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. S-cam brakes are the most common style brakes on large trucks today. What do you check when making a visual check of coupling? B. pull gently against the pin of the second semitrailer The emergency brakes come on whenever the air supply knob is pulled out or the trailer is disconnected. You can test that air is flowing to all trailers by opening? Why should you pull a dolly out from under a trailer before you disconnect it from the trailer in front? a. blood If a converter dolly is still under the second trailer and you unlock the pintle hook, what will probably happen? A turn of the glad hand attached to the hose will join and lock the couplers. Those that do not have spring brakes have emergency brakes that work from the air stored in the trailer air tank. 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. When checking the coupling system, make sure that the locking jaws are around the shank of the. - Converter dolly air tank drain valve: CLOSED. Only trailers designed to be pulled with another trailer behind it will have a shut off valve. Which of these is most likely to occur? B. you need about four times as much stopping distance at 40 mph as at 20 mph the road is dry & visibility is good. Air will not be available to release the trailer spring brakes (parking brakes). B. slightly open 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 The shut off valves prevent air from going any further. There is more chance for skids and loss of traction. When you go to the rear of the last trailer, what should you do to complete this check? Pickup at South Loop. Pull gently against them in a low gear to make sure the brakes work. D Each trailer and converter dolly has one or more air tanks. None of the above, 5. The couplers have a rubber seal that prevents air from escaping. There are two types of converter dollies. How much space should be between the upper and lower fifth wheel? True False True If you want to couple a second trailer to you combiantion vehicle, secure it by using the: Trailer emergency air brakes. These trailers have no parking brake. A. hand 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. On a triple combination, the shutoff valves on the rear of the last trailer should be? Only a certified diesel mechanic can check this. 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 You can also reach us at (888) 830-2326. 2. D You are visually checking the coupling of a converter dolly to the rear trailer. C. closed, You can release the dolly brakes by: It is important to check the height of the trailer before connecting a converter dolly to a trailer. Time allowed (Requires timer add on). The dolly will have a yellow lamp on the drivers (left) side. C. if you have traffic on both sides of your vehicle and something is blocking your lane, a move to the right may still be best, To uncouple the rear trailer in a set of doubles, the shut-off valve at the rear of the front trailer should be: locked . The pressure in the service line is controlled by the brake pedal and the trailer hand brake. A Tips for Backing Up a Trailer Like a Pro Trucker. The crack the whip effect will topple the rear trailer first. 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. Closed, latched There is no requirement or exact standard for color coding. C recouple. Doubles/triples flip flop over from quick steering moves more easily than many vehicles. "Glad hands" are coupling devices used to connect the service and emergency air lines from the truck or tractor to the trailer. Leave the emergency line shut-off valve closed and open the service line valve. The converter dolly air tank drain valve on coupled double/triple trailers should be: Closed. When does the Driver's manual say you should disable the steering axle brake? 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. We wish you the best of luck in your endeavors and are pleased to be of assistance. door. Doubles and triples must be driven very smoothly to avoid rollover or jackknife. How do you check to make sure trailer height is correct before coupling? Why should you pull a dolly out from under a trailer before you disconnect it from the trailer in front? C 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. When uncoupling a rear trailer, your rig should be parked in a straight line on? 0000010783 00000 n Describe what the trailer air supply control does. This will prevent water and dirt from getting into the coupler and the air lines. A full trailer behind a truck the trailer height is right when: the trailer will be raised slightly when the converter dolly is backed under it. All of the above, 6. 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. 0000001956 00000 n Hook dolly to front trailer. Explain why the waves that reflect from the far left edge of the plates in the given figure earlier exhibit destructive interference (zero intensity) at x=0x=0x=0. King pin. 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. In order to receive your Doubles and Triples endorsement, it is required that you pass the states official CDL written Knowledge exam. A On double and triple combinations, you must make sure that which of these is secure? By clicking on "Sign Up", you agree to our Terms of Use and Privacy Policy. The final procedure when connecting a rear trailer is to? When the road is dry You should hear air escaping, showing the entire system is charged. when does the drivers manual say you should disable the steering axle brakes? 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. You should not hear air escaping. . When only pulling one trailer, be sure the shut-off valves are all in the fully closed position. 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; . You must treat a flashing red signal as you would treat a STOP sign. Disconnect the glad-hand at the front of the first trailer and listen for air flow. The dolly tow bar may fly up, possibly causing injury and making it very difficult to re-couple. 4. 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A. release the spring brakes and check for movement Air escape from the open valve You are driving with double trailers and must use your brakes to avoid a crash. Converter dollies are connected to front trailers with a? To check that the trailer emergency brakes are working properly, you should pull out the trailer air supply control and? Tractor-trailers are considered combination vehicles. The emergency line valve open and release air doubles/triples flip flop over from quick steering movements more easily than many other vehicles. 0000002446 00000 n during normal operation the brakes of the double/triple trailer are controlled by : which of these will result in the best control on curves?