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Old 01-05-2012, 11:56 PM   #15
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I replaced my coach front air bags last year with the airlift brand from Streetsideauto.com. The pair was $75 delivered.

I used an old serrated steak knife to cut the old up in pieces to remove them. Then I hooked up a hand vacuum pump to the air fitting after removing the valve core, sucked the bag down, soaped it up and fit it thru the hole in the control arm.
Don't forget to raise the frame so the coils spread open as far as they can.
My chassis is an '87 P30 and part # was 81560.

The new bags took alot of the roll out of the handling. Well worth the money.
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Old 08-14-2012, 12:21 PM   #16
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Help! I am trying to replace my old Airlift 1000 bags with new ones but I am REALLY having a hard time getting the old ones out. They cut easily with a knife between the springs but they seem brittle and pieces are stuck to the insides of the coils. Any suggestions for tool use? How about spraying them with silicon grease? Anyone else have this problem?
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Old 08-14-2012, 07:50 PM   #17
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If I knew then what I know now I would replace the springs with a heaver duty spring. I put new air bags on about 8 years ago. The bags are still fine but the springs are just plain tired. I may replace next year.
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Old 08-17-2012, 12:18 PM   #18
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garrison,
I used 2 long straight blade screwdrivers to loosen them up and pulled them down through the bottom hole. Going in I used hot water to get them soft and folded the like a hot dog bun then put dish soap on the and shoved the new ones up the hole.
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Old 08-17-2012, 04:12 PM   #19
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Originally Posted by BA-in-Mich View Post
If I knew then what I know now I would replace the springs with a heaver duty spring. I put new air bags on about 8 years ago. The bags are still fine but the springs are just plain tired. I may replace next year.
I think that's where a lot of guys struggle? Replacing the springs is a much more daunting task, but if they could see and drive their coach after installing them, they would pull out the butt kicking machine, bend over and back into it for a minute after messing with the air bags. Been there? I get the fact they help, but only when compared to having bags that won't hold air....

I had a coach I was fixing up and the bags were shot. Wouldn't hold air. I put new bags in but was not happy with the ride height. I had assumed (incorrectly) the bags would lift the front up a bit. They did not.

The springs, which only cost a few bucks more than a good set of bags, fixed the height and negated the need for the bags. Lesson learned, FWIW. -Al
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Old 08-17-2012, 09:06 PM   #20
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Quote:
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I think that's where a lot of guys struggle? Replacing the springs is a much more daunting task, but if they could see and drive their coach after installing them, they would pull out the butt kicking machine, bend over and back into it for a minute after messing with the air bags. Been there? I get the fact they help, but only when compared to having bags that won't hold air....

I had a coach I was fixing up and the bags were shot. Wouldn't hold air. I put new bags in but was not happy with the ride height. I had assumed (incorrectly) the bags would lift the front up a bit. They did not.

The springs, which only cost a few bucks more than a good set of bags, fixed the height and negated the need for the bags. Lesson learned, FWIW. -Al
The process really isnt that difficult. Raise and support the coach. Remove the wheels. Pop the lower ball joint off along with the tie rod. Install the new spring, put the ball joint and tie rod back in, tighten and reassemble. Talking 4-5 hours if youve never dont it before. An easy 2.5 to 3" worth of ride height. Shocks work better too.
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Old 08-18-2012, 09:17 AM   #21
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Wow, what a pain. I did it though. I went through my tools and found the best way to get those old bags out was to chew the heck out of them with a small hole saw on a flexible drill bit extender. And a serrated knife helps too. The poly bags were old, very tough and had conformed to the spring, making it difficult to cut. Had to pry them away from the springs with a screwdriver just to get some area to cut on. Think next time I'll start with replacing the coils instead, like suggested on these threads.
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