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Old 08-05-2012, 09:26 AM   #15
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Check with Air Lift to see if they have replacement bags.
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Old 08-05-2012, 09:29 AM   #16
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Quote:
Originally Posted by rvguy40 View Post
"Contrary to popular belief there never was a P30 chassis."................I never knew that. What's the correct name for a 16k Chevrolet chassis ? Why do we all call it a P30 ? Why are all the parts for this particular chassis listed as, and found as a P30. Chevrolet seems to call it a P30 and know it as such...WH called it a W18, I know.....give us some insight ? I'm not trying to be snarky, I'm just curious as I've never heard that before....
Funny thing, I had a GM P-30 chassis on my 1989 Pace Arrow. Anytime I needed parts, they were Alwyn listed under the P-30 chassis designation.

Ken
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Old 08-05-2012, 10:05 AM   #17
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For $700+ you should be getting new coil springs that DONT require airbags. Personally I feel that is the PROPER solution for correcting a factory defect. The difference is NIGHT and DAY in feel/drive/tracking. Combined with a quality shock you are looking at 2-3" of additional suspension movement.

To properly replace the bags... the front end needs to be completely unloaded. Hopefull you have a jack or lift that can accomplish this.

Airlift provides the best warranty. Firestone not so much.
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Old 08-05-2012, 10:18 AM   #18
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Quote:
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For $700+ you should be getting new coil springs that DONT require airbags. Personally I feel that is the PROPER solution for correcting a factory defect. The difference is NIGHT and DAY in feel/drive/tracking. Combined with a quality shock you are looking at 2-3" of additional suspension movement.

To properly replace the bags... the front end needs to be completely unloaded. Hopefull you have a jack or lift that can accomplish this.

Airlift provides the best warranty. Firestone not so much.
Curious about what you feel is a factory defect.

Airlift bags are made by Firestone, lifetime warranty.
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Old 08-06-2012, 01:41 PM   #19
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i just recently replaced my air bags. Was quoted $800+. Got both bags from Firestone for $89 total and was through with the install in just under 2 hours.
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Old 08-07-2012, 11:52 AM   #20
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The standard kit we offer is 81560, as mentioned this is a very basic kit.

If you have any questions about our kit or these kits in general please let me know.


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Airlift bags are made by Firestone, lifetime warranty.
I'm not sure what you mean by this statement. There is one kit we sell which uses a Firestone product, but it's not commonly used and is a rather large bag. All other bags sold by us are made in house, including the bags in kit 81560.

Beyond a lifetime warranty we also offer a 60 day money back guarantee, we pride ourselves on having the best customer service/warranty in our market.
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Old 08-08-2012, 07:38 PM   #21
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dharveyyak,
What chassie do you have. I have a 2012 Thor/Damon Challenger on a Ford F53 and been thinking of installing some sort of air suspension. Any and all comments will be helpful
Thanks,
Gus
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Old 08-09-2012, 11:42 AM   #22
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Quote:
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Curious about what you feel is a factory defect.

Airlift bags are made by Firestone, lifetime warranty.
Been looking around the used RV market the better part of 5+ years. Most Chevys with IFS sit pretty darn low and without the airbags have the bumpstops riding on the frame.
Spring fatigue is not uncommon and really should be addressed before continously putting "bandaids" to cure a real suspension issue.

A set of proper rated coil springs might sell for $400. Labor should be 2-4hrs TOPS. YOu can add airbags once you have the proper weight coils for your application if you wanted additional load capacity.
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Old 08-09-2012, 01:36 PM   #23
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Quote:
Originally Posted by WeatherTodd View Post
Been looking around the used RV market the better part of 5+ years. Most Chevys with IFS sit pretty darn low and without the airbags have the bumpstops riding on the frame.
Spring fatigue is not uncommon and really should be addressed before continously putting "bandaids" to cure a real suspension issue.

A set of proper rated coil springs might sell for $400. Labor should be 2-4hrs TOPS. YOu can add airbags once you have the proper weight coils for your application if you wanted additional load capacity.
That does not relate to a factory defect. Tells me the pressure was allowed to drop below #55 or someone kept driving with collapsed bags untill they destroyed the springs. Less than $100. for new bags.
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Old 08-10-2012, 10:47 AM   #24
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I never thought I'd say this, but I agree with Weather Todd. We've had heated debates about tires, but that's neither here nor there. The IFS Chevrolet chassis, no matter whether it was a 20ft box truck or a 40ft motorhome HAD THE SAME RATE COILS on the front suspension. There were no front spring changes or options. If it's a P30/32 or whatever, they ALL have the same springs. To compensate for the additional weight on larger motorhomes, airbags were installed. The cure, as WeatherTodd and I have stated is to load and weigh the coach and replace the springs with the correct rating for the individual coach and do away with the bags totally. You get approximately 1/" of lift from the bags when inflated. This is not nearly enough to substantially increase bumper to bumper stop clearance once the springs start to collapse. My 33ft Seabreeze is built on the longest wheelbase Chevy made without a tag axle, and National RV installed from the factory a Hellwig helper spring or "buggy spring" on the front suspension. I'm thankful they did because my coach would be riding on the bumpers right now if it wasn't there. I'm ordering a set of Henderson springs rated for the weight of my coach and dumping the airbags completely.
It's not completely Chevy's fault. They had no idea what was being built on the chassis. My way of thinking the manufacturer should have built prototypes, weighed them and ordered the chassis with the correct springs on it. OR, replaced the springs with the correct spring weight after the coaches were finished. But alas, we know how that goes.
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Old 08-10-2012, 05:44 PM   #25
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Airbag assisted suspensions have been around since the 1940s and are still in vouge today. They can be found on cars trucks, busses, traines and all diesel pushers.
There is realy no need to fix what isn't broken, just maintain the bags and pressure and the springs will not collapse.
The bags are the main support for suspension loading, not the springs. Show me a set of collapsed springs and I will show a person that failed to maintain the pressure.
I only worked on them for forty years, glad you guys have it all figured out.
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Old 08-10-2012, 08:08 PM   #26
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I'm curious that if the airbag is the main support, why did they bother installing a coil spring ? Why not just put airbags on all four corners and get it over with ? I believe we've reached an impasse.
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Old 08-10-2012, 08:42 PM   #27
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Quote:
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I'm curious that if the airbag is the main support, why did they bother installing a coil spring ? Why not just put airbags on all four corners and get it over with ? I believe we've reached an impasse.
Not an impasse. What would happen if there were no support for the bag? answer; It would collapse.
The airbag front suspension was developed so that there was adjustment for front suspension loading, allowing for adjustment from #50 to #100 pressure. P32 is a platform used for many applications not just motorhomes.
To the best of my knowledge National did not install the Hellwig spring on any coach, it is aftermarket.
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Old 08-11-2012, 09:19 AM   #28
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I was not going to get into this discussion because I am neither against or for spring replacement. I would like to point out that Chevy came out with a service bulletin saying not to replace the front springs with stronger springs. According to Chevy, the stronger springs were bigger in diameter and would bottom out on a bad bump and damage the front end.
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