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Old 06-17-2013, 07:50 AM   #1
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Emergency air attachment for being towed by tow truck

I had to have my MH towed to a repair facility last week for engine repairs. I would like to know what other operators have done under the hood to provide an air attachment so the tow truck can provide air to the air brake system. I would like to put a permanent attachment on the manifold but am worried about leaks in the air system in the future. I have the parts to make a temporary connection that works fine but I would like to make it permanent. Let me know your ideas... Thanks
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Old 06-17-2013, 08:30 AM   #2
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I'm surprised it doesn't ahve one. My XC chassis has a connection in the basement specifically for that reason.
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Old 06-17-2013, 08:35 AM   #3
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Quote:
Originally Posted by topdownman View Post
I'm surprised it doesn't ahve one. My XC chassis has a connection in the basement specifically for that reason.
There is a manifold with 4 places to install a connector but they all have a screw in plug. No connection provided. Where in your basement is your connection? Thanks
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Old 06-17-2013, 08:37 AM   #4
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Quote:
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I'm surprised it doesn't ahve one. My XC chassis has a connection in the basement specifically for that reason.
My manifold is under front cap next to Power tech genset
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Old 06-17-2013, 08:40 AM   #5
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Mine is in the front left basement door (right by the entry door). It can double as an air fill if you know what you're doing. It has a quick-connect.

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Originally Posted by calhyatt View Post
There is a manifold with 4 places to install a connector but they all have a screw in plug. No connection provided. Where in your basement is your connection? Thanks
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Old 06-17-2013, 08:53 AM   #6
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Mine is in the front left basement door (right by the entry door). It can double as an air fill if you know what you're doing. It has a quick-connect.
Is your connection a standard female air hose connector?
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Old 06-17-2013, 08:59 AM   #7
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I didn't know the brakes had to be working on a coach being towed.

Mine was towed a few months ago and they weren't working.
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Old 06-17-2013, 09:14 AM   #8
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they dont require brakes with a tow truck. Tow trucks are equiped with over size breaks to help compensate for the extra weight
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Old 06-17-2013, 09:15 AM   #9
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Yes, female quick-connect.

Quote:
Originally Posted by calhyatt View Post
Is your connection a standard female air hose connector?
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Old 06-17-2013, 09:16 AM   #10
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You either have to put air on the system to release the parking brake, or cage the brakes. Otherwise you'll be dragging the unit with the brakes engaged

Quote:
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I didn't know the brakes had to be working on a coach being towed.

Mine was towed a few months ago and they weren't working.
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Old 06-17-2013, 09:21 AM   #11
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Yes, female quick-connect.
Thanks Mark. That is what I will add to mine.

I guess we have operators that don't quite know how their air brake system works. My coach will not move an inch without air pressure in all the tanks. No engine running, no air compressor, locked brakes until at least 65 psi indicated on my coach.
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Old 06-17-2013, 09:24 AM   #12
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Yep, same for mine.

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Thanks Mark. That is what I will add to mine.

I guess we have operators that don't quite know how their air brake system works. My coach will not move an inch without air pressure in all the tanks. No engine running, no air compressor, locked brakes until at least 65 psi indicated on my coach.
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Old 06-17-2013, 09:28 AM   #13
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Quote:
Originally Posted by Arch Hoagland View Post
I didn't know the brakes had to be working on a coach being towed.
The system must be pressurized with air before the brakes will release. At rest, the brakes remain engaged. Once the system reaches its operating pressure, the brakes are freed and ready to use.


Your signature says you operate a coach with air brakes. Maybe you would benifit by taking a peek at THIS. Or take an air brake course.
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Old 06-17-2013, 09:56 AM   #14
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Quote:
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I didn't know the brakes had to be working on a coach being towed.

Mine was towed a few months ago and they weren't working.
Based on your signature, your coach does not have air brakes so yours doesn't need this.

Air brakes need to have a certain minimum pressure level for the emergency / parking brake to release (I think my coach is 25 psi). Any time the pressure is below 25, the brake engages and you can't release it. As someone else mentioned, if you don't have 25 psi, the only other way to release them is by 'caging' which is roughly translates to prying the brakes open manually and then inserting a stopper pin so that the brakes can't close.
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