WorksheetsCoupling and Uncoupling
Total questions: 10
Worksheet time: 5mins
If your fifth wheel isn’t greased properly, it can:
Crack the Apron
create steering problems
snap the king pin
both A and B
If your service line is loose or damaged, you'll
Suffer a serious leak when you apply the brake
increase your stopping distance
Drain out your air tanks
all the above
Backing under your trailer at a angle can:
Push the trailer sideways
keep the air lines from getting pinched
damage/brake the landing gear
both A and B
When performing the tug test, when should you stop?
As soon as you feel resistance from the trailer
As soon as the trailer brakes pop out
When you hear a squeak from your trailer tires
When your spotter gives you the proper hand signal
What is the safest way to lower or raise the trailer's landing gear in high gear?
Face the trailer and spin the crank handle around you wrist.
Face Parallel to the trailer and use two hands.
Face the trailer, keep your feet apart, and rest on hand on the trailer.
Face parallel to the trailer and rest one hand on the trailer.
How can you pull the fifth wheel release handle in a way that doesn't put yourself at risk of injury.
Bend at the knees, keep your legs and feet clear of the rear tractor wheels, square yourself up with the handle, and pull straight out.
Pull on the handle with your dominant arm using a zig-zag pattern to loosen the grip.
Tuck your legs and feet between the rear tractor wheels to get better leverage.
Grasp the handle with both hands, brace your foot against the tires, and pull
When you position a converter dolly for coupling, you should roll the converter dolly up to the front of the rear trailer and stop when:
The Fifth wheel is fully under the apron
the rear trailer kingpin is about a foot from jaw opening
you hear the pintle hook snap into place.
the fifth wheel makes contact with the front of the trail apron plate
When preparing to couple a rear trailer to the converter dolly, the trailer height should be ________ the center of the Fifth wheel.
The same height as
slightly lower than
slightly higher then.
Perpendicular
How can you ease the pressure on the fifth wheel locking jaws before uncoupling your tractor trailer.
Park on a slight decline when possible
lock the trailer brakes and back up gently
Chock the trailer brakes
All of the above
when uncoupling the converter dolly, why should you never unlock the pintle hook with the dolly under the trailer.
You can unlock the pintle hook with the dolly under the rear trailer.
The dolly tow bar could fly up, possibly causing injury
The trailer could drop
The trailer could start to roll.
