St. Denis Station, Maryland
A look at the movements and states of operation of the air brake relay.
Relays are fitted to an air braking system for larger vehicles to speed up the application and release of the brakes, minimising brake lag, which is the time it takes between the driver operating the controls (park brake/foot brake valve) and the action actually happening at the brakes.
For a bit more background before watching this video, take a look at our “introduction to air brakes”
For the full video, with narration and a full explanation of the video, see here:
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Another Way by Psykick (c) 2016 Licensed under a Creative Commons Attribution (3.0) license.
This is a quick and easy way to check if your fuel pump is really gone or if its just a relay.Im not saying this is going to fix all fuel pump problems but its a great place to start before spending hundreds on someone putting in a new fuel pump for you or spending hours of labor and a few hundred on materials you may not need. AS ALWAYS ALL REPAIRS ARE AT YOUR OWN RISK I AM NOT TELLING YOU WHAT TO DO JUST GIVING YA A HINT AT WHAT MAY BE WRONG