Chapter 5

Question 1

What can cause your trailer to jackknife when you’re backing up?

Answer 1

if your tractor isn’t following the same path as your trailer

Question 2

What actions should you take if your trailer whips or swerves?

Answer 2

slow down and stop, check to see if it was caused by a mechanical problem and whether your load has shifted

Question 3

What’s a converter dolly and when’s it used?

Answer 3

has an axle, a fifth wheel and a hitch, to connect a second vehicle

Question 4

What’s the location of a single-unit truck’s central weight distribution point?

Answer 4

evenly over the axles

Question 5

What could result from placing too much weight over any one set of wheels or over any one axle?

Answer 5

1. could cause a worn tire to blow out
2. may cause flat spots on tires
3. Might make it impossible to steer
4. could take the front wheels entirely off the road
5. could bend the frame
   6.

Question 6

when coupling a tractor to a semi-trailer, should the air lines be connected to the trailer before or after connecting the kingpin to the fifth wheel?

Answer 6

after pg 81. unlesss the trailer doesnt have spring brakes.

Question 7

When a coupling device (other than a fifth wheel) is used to join vehicles in combination, is an additional coupling device such as a chain or cable required?

Answer 7

anything other than a 5th wheel requires a chain or cable

Question 8

how do you check that the fifth wheel jaws have locked to the trailer pin?

Answer 8

the trailer brakes should prevent the trailer from moving when trying to move the tractor forward

Question 9

to uncouple a tractor from a semi-trailer, are the air lines unhooked before or after separating the fifth wheel from the trailer pin?

Answer 9

before