Term
| When positioning the converter dolly in front of the second (rear) trailer, you can release the dolly breaks by opening the |
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Definition
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Term
For double and triple trailers, you will need to check that air flows to all of the trailers. To do this, you will need to use the _________________ to provide air to the service line. |
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Definition
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Term
When you test the emergency brakes for double and triple trailers, the first step will be to: |
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Definition
| charge the trailer air brake system |
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Term
When coupling a twin trailer, the first step is to: |
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Definition
| secure the second (rear) trailer |
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Term
When uncoupling the converter dolly of twin trailers, it is acceptable to unlock the pintle hook with the dolly under the rear trailer. |
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Definition
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Term
| When uncoupling twin trailers, the first thing you should do is |
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Definition
| Uncouple the rear trailer |
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Term
| When connecting a converted dolly to the rear trailer, make sure that the trailer brakes are_and/or the wheels are____ |
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Definition
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Term
| Doubles and triples are less stable than other commercial vehicles |
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Definition
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Term
| When coupling twin trailers, you should release the dolly breaks by |
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Definition
| Opening the air take Petcock |
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Term
| To uncouple the converter dolly you should |
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Definition
| Lowered the landing gear, disconnect safety chains, and chock the wheels |
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Term
| What methods can use to secure the second trailer before coupling |
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Definition
- Release Dolly breaks by opening the air tank petcock or if the dolly has a spring break, use the Dolly parking brake control
- Wheel the dolly into position by hand so it is in line with the kingpin
- use the tractor or first semi-trailer to pick up the converter Dolly and move it into position
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Term
| To check for airflow to the last trailer |
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Definition
| Open emergency shut off valve and listen for escaping air |
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Term
| When coupling triple trailers, start by coupling the___________ to the____________ |
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Definition
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Term
When checking double and triple trailers, the rear of the front trailers should be ______________, the rear of the last trailer should be ______________, and the converter dolly air tank drain valve should be ______________. |
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Definition
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Term
| When driving doubles or triples how should they be driven to avoid rollover or jackknifing |
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Definition
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Term
| Why should you check your mirrors whenever you apply the brakes hard |
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Definition
| This is the best way to recognize if the trailer has started to ski at |
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Term
| What is a reason why there is more chance of skids with doubles and triples in bad weather, slippery conditions and mountain driving |
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Definition
| You have more linked in more dead axles to pull |
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Term
| Which valve keeps air in the tractor or truck if the trailer breaks a way or develops a bad leak |
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Definition
| The tractor protects about |
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Term
| Which valves on the service line on the trailer connect the trailer air takes to the trailer air brakes |
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Definition
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