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Old 06-14-2014, 01:24 AM   #1
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Just noticed 2 air nipples

Having only owned my coach for a couple months, tonight I noticed 2 air nipples under the hood but fastened to the grill. What are they used for? Do I have some sort of front end suspension, or is it part of a leveling system?

I assume the nipples are to check and add air?

Found on my 91 Holiday Rambler with a Chevy.

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Old 06-14-2014, 02:10 AM   #2
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follow the lines, i suspect they go to some sort of air assist for the suspension
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Old 06-14-2014, 06:10 AM   #3
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Interesting. They kind of look like something the previous owner added. Do you know where the little black tubing goes to?
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Old 06-14-2014, 06:39 AM   #4
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Air bags located within the front coil springs would be my guess. GM encouraged the chassis builders to install them when it was found they had overrated the front springs. For whatever reason, these were run for several years, and IMHO, are just a pretty much useless patch, leaving most owners with sagging front ends even when inflated to maximum capacity.

I ended up replacing the springs in a '93 HR 34' for about the same price as a replacement set of airbags (150. delivered). This lifted the front end about 1.5". My concern at the time was regarding a harsh ride with these MUCH stiffer springs - which turned out to be a non event. Wasn't harsh in the least.

350-6560SDM Heavy Duty Coil Springs
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Old 06-14-2014, 06:39 AM   #5
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Looks like air bag fill for front coil springs. This was a popular addition on your chassis.
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