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Old 03-08-2010, 01:39 PM   #15
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I would also recommend checking with MB to find out if the system can be operated safely/without damage when disabled.
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Old 03-08-2010, 01:44 PM   #16
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I forgot to mention one more thing. I have done some research and figured out that it is a weight distribution system. My truck has an automatic levelling feature which is part of the 4MATIC air suspension.
Hi patis, I just ran across this thread that may give you a new point of view. http://www.airforums.com/forums/f238...tml#post820667
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Old 03-08-2010, 03:00 PM   #17
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Hi patis, I just ran across this thread that may give you a new point of view. http://www.airforums.com/forums/f238...tml#post820667

That's very helpful...thanks for the link. I want tow as safe as possible. I'll be bringing the rig to Andy at inland rv after I get her home.

Regards,
Mel
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Old 03-08-2010, 03:03 PM   #18
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Hi patis, I just ran across this thread that may give you a new point of view. http://www.airforums.com/forums/f238...tml#post820667
Funny, as a frequent reader of Rich's blog, their MB was the first thing I though of when I read this thread. You should read about their disappointing experience with the original hitch design on their GL320 here:
Man In The Maze » Mercedes GL320

Carol
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Old 03-08-2010, 07:04 PM   #19
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looks like the rusty remains of a dual cam system on the A frame.

YES w/d and sway control systems can be be EFFECTIVELY used with AUTO LEVELING on the tow vehicle...

auto leveling comes in MANY forms, but it's not the 60s and these aren't old air bag/spring assist systems...

in fact on SOME of these rigs there is NO springs/suspension other than the auto level gear...

so disabling it would make the vehicle UN-DRIVABLE big time.
________

now for the o.p. in terms of towing with that pile of rusty crap...

NO WAY i'd waste time or money on that old stuff and 3rd rate sway control.

get yourself one of THESE babies and really control sway...

http://www.airforums.com/forums/f464...ide-57179.html

and you will notice the pics of devoman's rig in that thread which DOES have auto load leveling enabled...

the merc' receiver MAY very well need reinforcing welds, or some added chunks of iron...

the benz boys really dropped the ball on that part of the rig (the oem receiver)

cheers
2air'
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Old 03-08-2010, 09:05 PM   #20
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Sway bar help for dummies

What you have on the coach is the "classic" version of the Reese Dual Cam Sway Control. I have used this setup on my '75 Eldorado with level-ride and have been very well satisfied -- I did have to follow the Reese setup instructions very carefully for towing the Overlander being certain that all hitch adjustments were completed with the ignition off (as directed in the car's owner's manual). The photo below illustrates the Dual Cam as applied to my '78 Minuet 6.0 Metre when hitched to the '75 Cadillac:



This setup is using the old-style weight distribution bars with Dual Cam Saddles replacing the original chain mounts.



This is a close-up of the "Classic" Reese Dual Cam setup on the trailer's A-Frame.



The photo above illustrates how the old-style weight distribution bars with the Dual Cam Saddle mates to the Cam that is mounted on the trailer.



The photo above illustrates how the "stirrup is pulled up and the chaine attached to the "snap-up" bracket. The "snap-up" bracket still needs to be cinched and pinned as shown in this photo.

You shouldn't have any difficulty sourcing any parts needed for your hitch. The new weight distribution bars with the "hooks" on the ends will also work with this setup, but the brackets on the trailer's A-Frame may need to be repositioned.

Good luck with your coach!

Kevin
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Old 03-08-2010, 10:04 PM   #21
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Originally Posted by patis View Post
I forgot to mention one more thing. I have done some research and figured out that it is a weight distribution system. My truck has an automatic levelling feature which is part of the 4MATIC air suspension.
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Thanks Andy: That's what I had suspected. I am glad I didn't buy a new hitch setup for the WDH.
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Correct.
Can I still use a WDH to reduce tongue weight with levelling air suspension?
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Originally Posted by Inland RV Center, In View Post
There is only ONE WAY, none other.

You must defeat the auto leveling system, so that it cannot activate, and drop the air pressure to minimum.

Anything short of that will defeat the purpose of the load equalizing hitch, no if's, and's or but's. NO EXCEPTIONS.

Andy
It is impossible, and dangerous to defeat that air suspension. Many people use WD hitches with air ride suspensions, it is no longer 1974 when an air ride suspension was an aftermarket or delicate experimental device. If you insist that air ride suspensions cannot be used to tow with a WD system, you are saying that hundreds of thousands of vehicles designed specifically to tow trailers are not able to do so. The Volkswagen Toureg, Lincoln Navigator, Mercedes SUV's, Ford Expedition, Chevy Suburban are all vehicles you say are not capable of towing an Airstream.
As in all things, common sense should prevail, and making blanket statements based on 40-year-old data, when 40 years of progress in the field of vehicle suspensions has been made is tantamount to being a technological Luddite.
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Old 03-09-2010, 01:36 AM   #22
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Air Suspension Myth.

Hi, I have been towing for over five years with a vehicle with rear air suspension.

(1.) Nothing in my Airstream owner's manual states that I can't tow my trailer with a vehicle with air suspension.

(2.) My Lincoln has rear air suspension and a factory tow package. Why would they build it this way if you can't tow with it?

(3.) My Lincoln owner's manual gives detailed instructions on how to set up a WD hitch system in conjunction with the air suspension.

(4.) Final step, Turn air suspension back on.

Read the manuals that came from the company who built your vehicles. Not the manual in the museum for hitching the twenty mule team to your new conestoga wagon.
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Old 03-22-2010, 10:42 PM   #23
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Mine has air suspension which begins to activate when the rig is hooked up. Never had a problem and it is easy to disconnect the trailer by hitting the lower button.
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Old 03-22-2010, 10:53 PM   #24
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Mine has air suspension which begins to activate when the rig is hooked up. Never had a problem and it is easy to disconnect the trailer by hitting the lower button.
The real answer comes from the scales.

What are the weights on the front and rear axle of the TV with the air system active, and what is it without?

The typical answers, will probably shock you.

Andy
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