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Old 04-13-2016, 03:25 PM   #1
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Question are you using air brake air for tire filling

does anyone use air brake air for self sufficient tire filling? where do you tap your line for air source?
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Old 04-13-2016, 03:35 PM   #2
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This same subject was here about a week ago. If I remember correctly it was suggested that it was ok for topping off a low tire, but you shouldn't try to inflate tires from zero because of the stress it puts on the compressor.

Also I believe they were talking about tapping into the wet tank. There should be a port on the tank you can plumb to get an air chuck on there.

My bus has an air chuck inside the air service door near the driver's area.
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Old 04-13-2016, 03:38 PM   #3
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you might want to put a valve (ball valve works nicely),in line before the chuck as a backup
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Old 04-13-2016, 06:16 PM   #4
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I have one tire with a bad habit of leaking down. My shop air connection is a regular male coupler, so I built a female-to-female adapter so that I can plug in my air hose there and run it to any corner of the bus for topping off tires.
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Old 04-13-2016, 09:18 PM   #5
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Quote:
Originally Posted by Robin97396 View Post
Also I believe they were talking about tapping into the wet tank. There should be a port on the tank you can plumb to get an air chuck on there.
I was hoping to pop a quick-connect on mine for random air needs, and to fill SCUBA tanks.

Where was the other thread?
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Old 04-13-2016, 09:43 PM   #6
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Random air needs is fine, but it's questionable how much you can use it with those tiny air tanks without overusing the compressor. To fill dive bottles you need a compressor capable of at least 3000 psi. Even a compressor that could reach 3000 psi has to be an oilless pump so it doesn't kill you with fumes.
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Old 04-13-2016, 10:05 PM   #7
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I have one tire with a bad habit of leaking down. My shop air connection is a regular male coupler, so I built a female-to-female adapter so that I can plug in my air hose there and run it to any corner of the bus for topping off tires.
Why dont you get it repaired?
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Old 04-14-2016, 12:59 PM   #8
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Ok, I guess I deserved that opus. It's one of the rears. The tread is nearly gone so I'm preparing for a new set of 4 in the "near" future. In the interest of further complicating things, while having the tires replaced I want to take the bare wheels back from the tire shop to strip and re-paint before the new rubber is mounted. In short, I decided to just live with the leak until I'm ready to do the whole tires and wheels job.
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Old 04-14-2016, 01:02 PM   #9
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Ya never know til you ask.
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Old 09-03-2017, 06:14 PM   #10
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air compressor fix

Roll with It on YouTube did this - is the link about 2:16 into it. Then he shows it working about 9:10 or so.
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Old 09-03-2017, 07:07 PM   #11
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and to fill SCUBA tanks.
Wow.......

Not really sure what the best response is to that.......

Do you realize that you are not going to get 2600+ psi out of your bus air compressor? Or that breathing that air at depth gives you a great chance of ending the dive early because you are dead?
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Old 09-03-2017, 07:09 PM   #12
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My first ship had a 4500# air supply.
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Old 09-03-2017, 07:19 PM   #13
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My first ship had a 4500# air supply.
I was being kind... I have some old 63cf's that are only rated to 2600psi. My new 100hp is rated for over 4000psi.

The big question is how does anyone that managed to get their cert thinking that the air that comes out of their bus compressor is ok to breathe at 2-4 atmospheres? Remember "partial pressures"??? CO?? Oil vapor??

Remember the Darwin Awards??
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Old 09-03-2017, 08:55 PM   #14
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Roll with It on YouTube did this - is the link about 2:16 into it. Then he shows it working about 9:10 or so.
All I see is leg
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Old 09-04-2017, 12:33 AM   #15
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For very occasional emergencies you could inflate a tire from your brake system's air supply, but for any more frequent use than that you really need to have a separate auxiliary electric compressor connected back to the accessories tank (if you have one), or with a check valve to the wet tank. You can then install air outlets around the bus to inflate tires and run air tools. Easy!

I have a cheapo Harbor Fright twin-tank 4-gallon electric compressor that sits above the front axle in the last remaining empty space under the floor, and it's connected through a simple HF air dryer/filter to the accessories tank. It feeds three air outlets, one on each side and one back in the engine room, and the compressor's tank drain line terminates with a ball valve and male air fitting near the front door. The latter came in useful when I needed a tow after my brand-new hydraulic fan motor split on its first trip, and the tow truck could then easily connect its air to my bus through this drain line connector.

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Old 09-04-2017, 10:25 AM   #16
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I use my truck's compressed air system for all sorts of uses. I'll do the same with the bus when I have time. I do run things off the "dry" tank (and in the case of the truck, I use the trailer air supply line).

That said, using a 120 PSI system to run a tire up to 110, the last 10-20 PSI takes a long time to air up. It goes a lot faster from a 150 PSI shop supply, but it can be done in a pinch.

Some of our trailers have an on-board system (I forget the name brand) which automatically keeps the tires at 110 PSI using the trailer's air system, even while going down the road (some of our trailers are old and never had these systems retrofitted). I see a lot of trailers with these systems, especially the ones with those wide single tires.
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Old 09-04-2017, 01:03 PM   #17
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of course i use tank, with ball valve, 3/4 50 foot quick couple air hose, adaptors for other sizes, have 2 sizes air guns, plus portable paint stand for gun, dryer, etc, in a compartment i built just for air fittings, painting supplies rght next to the tank. everyone should do this.. is great help esp when changing tire on the road as I have had to do.
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