That and make sure that the the latch isn't beat up and not closing.
A lot of ham handed guys never quite figured out that you can't slam the hoods on an AD truck and expect it to close. You have to close it with the safety catch held so it goes in it's hole and then push the hood down to close it. That causes problems similar to the ones in the following photos of a hood latch in my batch of hood latches that has been pretty well beat to death.
You can see that the latch doesn't close all the way and that the metal on the side of the latch is split and the piece is pushed down from the latch pin being slammed on it in the past.
Here you can see it after I took a hammer and punch to it and pushed the metal back close to where it should be.
Now you can see that the latch goes all the way closed but the latch it's self still needs a lot of work and some welding before it is usable.
I've seen a lot of them that were worse than that one as they really got abused over the years but that is one thing to check and correct before going to the next step which is adjusting the screw. It has a jam nut on it that you have to loosen and then turn the pin with a screw driver.