Question:
Had this happen a few times. On my assigned trailer I put 2 sets! (2 springs per 'hanger').
I slid my tandems all the way back and measured the distance. Installed the 'hangers' at the 1/3 point from each end.
Then I slid my tandems all the way forward and mounted bigger diameter 'eye hooks' accordingly.
Since doing this, I've yet to have the air lines hang too low or drag.
When running in snow and ice, I stop occasionally and knock the ice off the lines with a hammer. If needed, I'll add a couple of bungee cords to keep the air lines up higher.

Answer:
"bungee cords to keep the air lines up higher" I had a bungee on the lines at one time. Maryland DOT put me out of service for it. It was on there long enough and loose enough that it had worn to the cords on one air line. Got to check that stuff all the time.
"Life, Liberty and the Pursuit of all who threaten it"

Answer:
I hook the bungee cord into the 'hanger' and then to the floor crossmembers.
Never hook them directly to the air lines themselves.
Usually the only time I have to do this is when running in very wet snow or slush.

Answer:
Hoss, that would work real well. Some one wrapped it around the airline on my trailer. Like a dummy I let it go. It just doesn't pay to let anything go. DOT corrected my error for me.
"Life, Liberty and the Pursuit of all who threaten it"

Answer:
I'd like to add something here big ol' Hoss.
If your airlines EVER touch the deck plate, it's a MAJOR safety violation! As Hoss says, he gets out and knocks off the ice often when running on snotty roads.
After a snowstorm, in the east they lay down salt, and in the west, many highway departments use calcium chloride. This stuff will leave the road sopping wet, even when the outside temp is around zero. All the spray you'll throw up freezes instantly to anything it touches, including your airlines to the trailer. That ice will lay those lines right down on your deck, creating a rub point between the two. If you are going to run the road, you absolutely MUST stop often and clear the ice! If you don't you certainly stand a good chance of chafing those lines, which is a BAD thing, since a chafe can cause the airline to blow a leak, WHICH YOU DON"T WANT!
And about any scalehouse wil either give you a ticket, or sometimes allow you to knock the ice off with a warning. I've been traveling I-25 in southern Colorado and had Smokey do a flip and run me down for my lines touching the deck coated in ice. Just remember to always get out and look! And while on the subject......
You need to know that it's common to build up 3-4000 pounds of ice on yout truck and trailer running those same conditions. So if you're running a load that has you grossing 79,000, add the ice to your weight and you are OVERLOADED! YES the ice counts as your weight. So when you pull into the scales, you can expect a hefty fine in most states. YOU as the driver are responsible for getting the ice off and not rolling down the road at over the legal weight limit! You're going to have to figure a way to beat the ice off.
A cheater bar works fine, a small hammer works better. Just get under there and beat the stuff off, being careful not to damage air lines and wiring. Pull into a truck scale at the truckstop BEFORE you run over the scales at the DOT scalehouse. The $7.50 might come out of your own pocket, but it's certainly better than the $300 or so the scalemaster will fine you for running over his scale 4,000 pounds overweight! And you'll still have to beat the ice off before they'll let you leave!
Just some FYI for you. Remember the ice and slow down in bad weather.......
Head Warrior, TFBU
On The Mend.....

Answer:
some cheap gardening gloves work great too, cotton not leather. your hands freeze, but they dry quickly. for the airlines i just put a bungee between the springs to tighten up a bit, reduces some of the ice.....and when ya pull into a rest area to knock off ice, drag your brakes a little to build head, go inside do your buisness and then the heat will have started melting some of the ice, making it easier to get off the truck and trailer.
There are no stupid questions, only stupid people

Answer:
what do u mean by that?
Answer:
drag your brakes.......what do u mean by that?
Lightly apply your brakes to heat them up and melt any snow and ice that may accumulate in the drums. The heat will also help disapate moisture so brake shoes won't (shouldn't ) freeze to the brake drums.
Best bet in winter when parking, DO NOT set your trailer brakes, unless you like laying in a snow bank with a hammer.

Answer:
Bungees work great. We slide our trailers all the time. The springs get worn fairly quickly. We just gotta remember to remove the bungee before sliding the tandoms or !!WHIP!! SNAP!! it's gone