Crows foot air connection off air tank

Not all toys are battery powered, it gets lonely on the road!

 

Big toys to fill that void eh...

 

Woman truck driver could of owned that before he did. One just never knows now adays.

 

Might be to put air in the tank, like in a shop situation, when you need air but can't start the truck. Used to work for a guy that had this on all his trucks.

 

This^^^.
Helps to move a fully loaded truck that won't start. You supply the outside air, brakes magically work! lol

 

Like you say, it was probably just for airing the truck up when cold. Must have had a mombo air compressor in the shop. I'm sure that didn't take long to air up.

 

Those "crowfoot" type connections ( and 3/4" lines) were usually for BIG air powered tools, like jackhammers and such. I don't think a truck air compressor would be able to supply that kind on air volume. I've worked for several company's that had the smaller connections, and were required to air the truck up ( when parked inside) so as not to fill the garage with smoke when building up air. ( air leaks were so common years ago)

 

Some tank out fits use 3/4 inch hose with Chicago fittings to pressurize tanks and blow off loads. Standard truck compressors are way to small for this but might get by in a bind. I have seen some Mack's with big inline 4 cylinder compressors for that purpose. Tanker yanker's usually have PTO operated equipment for that.