Believe or not, there is a lot in common with the chassis of a fire apparatus and the different components that have fluid in them. We will discuss in this article what to check for when inspecting and visualizing the apparatus chassis and the different fluid checks necessary for your daily, weekly and monthly inspections.
Nowadays, many newer fire apparatus have many diagnostics on them for fluid checks via on-board computers. In my opinion, they should not replace the old reliable "dipstick."
If your apparatus does not have the dipsticks or manual fluid checks specified in the manufacturing of the truck, I would have it put into the build to assure the truck is delivered with them. Have an access hatch placed to your liking, so you can have access to these fluid checks. Manufacturers usually locate the hatch on the engine cowling/cover or "dog house" in front of crew seating in the back cab.
As with any type of fluid checks, it is highly recommended that some sort of nonporous latex glove or mechanics glove be worn to avoid harm to the skin. As far a checking the actual fluids, there is a lot that can be explained by touch, appearance or smell.