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Old 11-11-2020, 02:45 PM   #1
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Air Bag Replacement-2002 Signature

Getting frustrated with the lack of knowledge of this coach by service departments. I blew an airbag on the drive axle about 100 miles from home. Not too big a deal...yet. Capped off that airline and was able to limp the 20 miles to the Freightliner dealer on the tag. Sourced and purchased all 8 bags (tag axle lift bags were new). After a week the dealer emailed me saying they were able to replace the busted bag and its mate but said the hardware to change the rest of the bags was hidden in the chassis and they couldn't do the job. He also said they don't have the software to set the ride height. This Roadmaster chassis was a partnership with Freightliner so I had assumed that they would be the best folks to do this job. Does anyone know who might be able to handle it anywhere in Alabama or central to north Florida? I don't trust the remaining bags.
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Old 11-14-2020, 06:31 AM   #2
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In central FL there is Alliance Coach (now owned by Lazy Days but the same staff/mechanics). Alliance has a good reputation. I had some body work/paint done by them.
They are on "Monaco Way in Wildwood FL" (near Ocala). https://www.lazydays.com/rv-service
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Old 11-16-2020, 04:22 AM   #3
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First of all you have a roadmaster R10 or S Series chassis. Freightliner had nothing to do with it so they wonít have a lot of experience with it. Replacing the airbags is pretty straight forward although they arenít easy to get to because of their location. It is 4 nuts and an air line. As for setting the ride height, there is a single air valve in the front and 2 in the rear with a rod attached to the axle. Ride height is set by changing the position of the rod and measuring the airbag. I believe yours should be around 9Ē but the specs are out there. Make sure that whomever changes the bags installs the air nipple into the bags with teflon tape and tightens them very tight otherwise they can leak. I have found that out the hard way on mine, I replaced 8 of my bags and have had three with small leaks.
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Old 11-16-2020, 04:26 AM   #4
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Old 11-16-2020, 05:14 AM   #5
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In central Florida I would give Josam Truck a call. I've had them do work on my rig and have been extremely pleased with their service.
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Old 11-18-2020, 07:33 PM   #6
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Quote:
Originally Posted by slemnah View Post
First of all you have a roadmaster R10 or S Series chassis. Freightliner had nothing to do with it so they wonít have a lot of experience with it. Replacing the airbags is pretty straight forward although they arenít easy to get to because of their location. It is 4 nuts and an air line. As for setting the ride height, there is a single air valve in the front and 2 in the rear with a rod attached to the axle. Ride height is set by changing the position of the rod and measuring the airbag. I believe yours should be around 9Ē but the specs are out there. Make sure that whomever changes the bags installs the air nipple into the bags with teflon tape and tightens them very tight otherwise they can leak. I have found that out the hard way on mine, I replaced 8 of my bags and have had three with small leaks.
Iíll pass that along to the shop. They also gave up changing two of the bags. They can get a socket on the nut but no style of wrench, power or otherwise, can turn the nut in that space. 10-4 on the Freightliner error. Repeated bad info.
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Old 11-19-2020, 06:55 AM   #7
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Iíll pass that along to the shop. They also gave up changing two of the bags. They can get a socket on the nut but no style of wrench, power or otherwise, can turn the nut in that space. 10-4 on the Freightliner error. Repeated bad info.
Amazing that a bunch of us back yard wrenches have replaced them but the "professionals" cannot.
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Old 11-20-2020, 08:22 AM   #8
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Amazing that a bunch of us back yard wrenches have replaced them but the "professionals" cannot.
The mechanics claim (both shops) that the body was installed on top of the chassis after installation of the bags, putting the hardware out of reach. I'm picking the bus up today, which now has 4 new bags, 4 old bags, and 2 fairly new ones. I have a bad back, both shoulders bum, and a bad hip but I'm going to figure this out myself, somehow.
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Old 11-20-2020, 09:56 PM   #9
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Air Bags

Converterjoe - I replaced mine, ten of them. One in the desert north of Yuma. That was fun. I am 71 now but I think I was only 68 when I did this job. Best deal I found on air bags - Contitech AS8897 at Find it Parts $120 free shipping. This bag has 3/4 NPT for air fitting. You can get Firestone 9376 with 1/4 NPT but you will pay a little more. You will need a 3/4 stubby combo, 3/8 stubby ratchet with a 3/4 deep well. If you have the large hoses on the front ( 3/4 ) you will need a
1 1/4 open end about 6" long. Also assorted pry bars. My coach is an 05 sig so I don't know if it's the same, but it should be close. Search the Monaco forum for more info. I hope this helps some. Good luck. Mike
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Old 11-21-2020, 06:14 AM   #10
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Converterjoe - I replaced mine, ten of them. One in the desert north of Yuma. That was fun. I am 71 now but I think I was only 68 when I did this job. Best deal I found on air bags - Contitech AS8897 at Find it Parts $120 free shipping. This bag has 3/4 NPT for air fitting. You can get Firestone 9376 with 1/4 NPT but you will pay a little more. You will need a 3/4 stubby combo, 3/8 stubby ratchet with a 3/4 deep well. If you have the large hoses on the front ( 3/4 ) you will need a
1 1/4 open end about 6" long. Also assorted pry bars. My coach is an 05 sig so I don't know if it's the same, but it should be close. Search the Monaco forum for more info. I hope this helps some. Good luck. Mike
Thanks, Mike - I brought the coach home last evening so I'm going to spend some time under her today.
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