Contents
- 1 How much space should be between the upper and lower fifth wheel after coupling?
- 2 How should you align your tractor to a trailer when preparing to couple?
- 3 When coupling the proper position of the fifth wheel is?
- 4 How do you do coupling and uncoupling?
- 5 What my happen if the trailer is too high when you try to couple?
- 6 Where should the tractor be when you inspect the landing gear?
- 7 When you get ready to back under the semi trailer you should line up?
- 8 Why should you lock the tractor glad hands to each other when you are not towing a trailer?
- 9 When the trailer is lying flat on the fifth wheel how much gap space is acceptable?
- 10 Why should you be sure the 5th wheel is properly greased?
- 11 What part of the kingpin should the locking jaws?
- 12 Why should you back until the 5th wheel just touches the trailer?
- 13 What does coupling mean?
- 14 What does coupling mean in trucking?
- 15 How can I make sure my trailer height is correct before coupling?
How much space should be between the upper and lower fifth wheel after coupling?
combo/doubles/triples endorsement questions 25 – 32
| A | B |
|---|---|
| 26. TO MAKE SURE THE KINGPIN AND FIFTH WHEEL CONNECTION ARE SECURE, WHAT SHOULD YOU DO? | slowly drive forward with the trailer brakes locked |
| 27. WHEN COUPLING IS COMPLETE, HOW MUCH SPACE SHOULD THERE BE BETWEEN THE UPPER AND LOWER FIFTH WHEEL? | no space |
6
How should you align your tractor to a trailer when preparing to couple?
Put the tractor directly in front of the trailer. (Never back under the trailer at an angle because you might push the trailer sideways and break the landing gear.) Check position, using outside mirrors, by looking down both sides of the trailer.
When coupling the proper position of the fifth wheel is?
When coupling, the proper position of the fifth wheel is: Tilted Down towards the end of the tractor. A trailer is most likely to jackknife when it is: Empty.
How do you do coupling and uncoupling?
6.3 Coupling and Uncoupling
- STEP 1: Inspect Fifth Wheel. Check for damaged/missing parts.
- STEP 2: Inspect Area and Chock Wheels.
- STEP 3: Position Tractor.
- STEP 4: Back Slowly.
- STEP 5: Secure Tractor.
- STEP 6: Check Trailer Height.
- STEP 7: Connect Air Lines to Trailer.
- STEP 8: Supply Air to Trailer.
What my happen if the trailer is too high when you try to couple?
Terms in this set (5) What might happen if the trailer is too high when you try to couple? If the trailer is too low, the tractor may stike and damage the trailer nose; if the trailer is too high, it may not couple correctly. Go under the trailer and look into the back of the fifth wheel.
Where should the tractor be when you inspect the landing gear?
Tractor protection valve to close. to inspect the landing gear. The tractor should be positioned: With the tractor frame under the trailer.
When you get ready to back under the semi trailer you should line up?
4. When you get ready to back under the semi trailer you should line up: A About 12 degrees off the line of the trailer.
Why should you lock the tractor glad hands to each other when you are not towing a trailer?
Why should you lock the tractor glad hands (or dummy couplers) to each other when you are not towing a trailer? A The connected brake circuit becomes a back up air tank. B If you did not, you could never build system pressure.
When the trailer is lying flat on the fifth wheel how much gap space is acceptable?
b. No gap is permissible between the trailer upper coupler plate and the fifth wheel. (6.35 mm) or less gap visible between the lock jaws.
Why should you be sure the 5th wheel is properly greased?
Grease can build up on the fifth wheel and attract dirt and debris, so degreasing it prior to inspecting it allows you to see any potential damage more easily. It is also very important to make sure all the grease buildup is removed in and around the lock jaw, throat and pivot points.
What part of the kingpin should the locking jaws?
Which part of the kingpin should the locking jaws close around? When you get ready to back under the semi trailer you should line up: Directly in front of the trailer. How should you test the tractor semi trailer connection for security?
Why should you back until the 5th wheel just touches the trailer?
It will keep dirt and water out of the lines. When backing under a trailer, you should expect the trailer to be lifted slightly by the fifth wheel plate.
What does coupling mean?
1: the act of bringing or coming together: pairing specifically: sexual union. 2: a device that serves to connect the ends of adjacent parts or objects. 3: the joining of or the part of the body that joins the hindquarters to the forequarters of a quadruped.
What does coupling mean in trucking?
The fifth-wheel coupling provides the link between a semi-trailer and the towing truck, tractor unit, leading trailer or dolly. To reduce friction, grease is applied to the surface of the fifth wheel.
How can I make sure my trailer height is correct before coupling?
How do you check to make sure trailer height is correct before coupling? It must be slightly lower than the center of the fifth wheel, so trailer is raised slightly when dolly is pushed under.