Questions appearing on this CDL practice test:
What should you remember to check while exiting the vehicle?
Hand rails and steps should be checked for?
When you check the Fuel tank you can also say you would check the same items on the air tanks. What should these two items be checked for?
You should mention you would check all light covers and reflectors for damage on the side of the vehicle, both the tractor and the trailer, again to cover the side since you have only checked the front at this time?
When checking the air and electrical lines between the tractor and the trailer what should you be checking for?
What are a few items you want to check while between the tractor and trailer?
The rest of the axels on the vehicle are nearly the same as the front steer axels, with a few differences. What are the differences?
The apron is the metal plate welded on the bottom of the trailer that gives the 5th wheel a smooth surface for vehicle connection. What should you check the apron for?
The kingpin is a cylindric piece of metal protruding down from the apron, it has a base which is near the apron, shank or the narrow section of the kingpin where the locking jaws connect, and the head or the part furthest from the apron. What should you check the kingpin for?
The 5th wheel is mounted on the back of the tractor, it lifts the trailer slightly when it contacts the apron when you are coupling the vehicles, and it houses the locking jaws which wrap around the shank of the kingpin to securely attach the trailer. True or False: The 5th wheel should be greased, no illegal welds, not damaged, and tilt with enough pressure.
You should check to make sure that the locking jaws are completely wrapped around the shank of the kingpin during your pre-trip inspection?
When coupled there should be a slight gap between the 5th wheel and the apron, meaning you should be able to see light between the two.
The 5th wheel has a release arm built into the side of it, it automatically locks the jaws around the kingpin when you connect the vehicles, but it can be pulled out to release the locking jaws for uncoupling. What is the correct position of the release arm when the vehicle is coupled?
Most 5th wheels are adjustable for weight distribution and turn clearance, these are called sliding 5th wheels, they have a release are that needs to be completely in and locked, and a locking mechanism. What locks the 5th wheel in place?
The 5th wheel platform needs to be checked for?
At the rear of the tractor there are still a few things to check, what are they?