[[Template core/front/global/utilitiesMenu does not exist. This theme may be out of date. Run the support tool in the AdminCP to restore the default theme.]]
Sign in to follow this  
TheSDTrucker

Air Lines

Recommended Posts

I crawled under a trailer today to get an idea of what the air line plumbing looks like on a trailer. I am having trouble distinguishing which line does what. I noticed there are two different sizes. Which one would be the hose for the red gladhand and which one would be for the blue gladhand? 

20181026_163522.jpg

Share this post


Link to post
Share on other sites

The smaller hose(usually 3/8 inch nylon hose) is for the spring/parking brake system. The larger hose(usually 1/2 inch) is for the service side They both go to some kind of relay valve which applies tank air to the systems. 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this