air system pressurization from outside source
#11
09-26-2009, 04:19 AM
Or just do what I do, use the red gladhand. I even run air tools off of it.
Most trucks come with a schrader valve somewhere. Most freightliners are by the air compressor, and Volvos have it attached to the external governor.
#12
09-26-2009, 05:16 AM
Remove said valve, put a "T" fitting in where the pop off valve was, put the pop off valve in one port of the "T", and put a 1/4 NPT X 1/4" air line fitting into the other port of the "T". Connect a length of 1/4" plastic air line to the fitting, run the air line to a convenient location on the outside of the truck and use a 1/4" air line X 1/8 NPT female fitting and screw a Schrader valve (it looks like a tire valve) into the 1/8 NPT fitting.
Originally Posted by Kranky
One reason would be if a truck has dead batteries and is also out of air...
#13
09-26-2009, 05:27 AM
Do you mean connect the red air line from truck #1 to the red air line on truck #2? Interesting. It didn't occur to me that air could be pumped in via that line; it makes sense, though. That might be the easiest, quickest solution for now.
#14
09-26-2009, 12:55 PM
What he means is if you want to air up your tires or run an air tool hook the hose to the red glad hand.
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#15
09-27-2009, 09:24 AM
I was talking more about using that air supply for something else, such as filling up tires or using air tools. It's possible that the red gladhand can be used for air in, but that may damage the tractor protection valve, I am not sure.
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