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Old 07-19-2003, 09:45 PM   #11
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I hate to sound so ill informed but can you really dump the air and still move these vehicles? I thought you could only dump the air when you're stationary ... that's cool if you can
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Old 07-19-2003, 10:45 PM   #12
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What are those reprocussions that your speaking about?...I have a Dodge 4X4 Cummins with 37's and no modification of body or any lift kit....geof
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Old 07-20-2003, 12:41 AM   #13
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geof,
When you use a body lift or a suspension lift, there's more to consider than just getting it into the air.
Steering geometry, drive shaft angles, center of gravity and a few other items get shanged. If you don't make the appropriate accomidations, such as a modified pitman arm, shimming the axles and adding anti-sway bars, you're asking for trouble.

SandCarFan,
Yes. It is possible to dump the air-bags while in motion. You can also adjust for ride height and softness.
However, driving with the air-bags deflated is hazardous to the health of your drive-shaft, rear-end, u-joints, carrier bearings and transmission. This is because it changes the shaft-to-yoke angle, causing a severe vibration in your drive-line.
For this same reason, it is ill-advised to adjust the air-bags for height and comfort unless you're prepared and capable to change the position of your rear diff to compensate.
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Old 07-20-2003, 09:05 AM   #14
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Other accommodations include: hitch height, fifth wheel to bed clearances, if you replace springs ... weight rating and progression rate, are their still overload springs, changes in handling (pitch and roll).
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Old 07-20-2003, 05:51 PM   #15
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I woulkdn't dump the airbags while going down the road, just when I was backing into my driveway, or some other such spot where I needed the extra clearance at the back of the trailer that lowering the rear of the truck would allow.

Jeff in South Dakota
1995 Ford F-250 4X4 PSD
1992 Skamper Slide in camper
1984 Holiday Rambler 5er
1979 Mercedes Benz Unimog
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