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FC (Forward Control Unique Issues) If you have a unique issue with your FC model coach and it can't be answered in one of the other forums here, then this is where you can list it.......List your FC Parts here too.

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  #1  
Old 08-12-2022
DFB052686's Avatar
DFB052686 DFB052686 is offline
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Default Front airbag replacement on 87+

I’m getting back into working on things, been down a few weeks or so.

I need to get the airbag thats rotten/leaking out from under the front end of the 87 FC31, I didn’t think it would be more difficult than the same job on the 83, I was wrong.

Anyone here have a procedure for replacing these? Or a tip? I’m on the driveway with a creeper, bus is on stands, looks like I need to remove some of the following;

Exhaust
Trans cooler lines
Safe-T-Plus
Panhard rod

This is just to get to the point where i may need modified wrenches and struggling in small spots etc. UNLESS I am missing a trick here…??

I got AIRTECH airbags from a us distributor for $90 each, matched the 8997 style perfectly, made in Turkmenistan. Seem to be decent quality, fittings and threads match up. Rep said I can order direct from them in future as needed.
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-Dennis (direct email please! dennis@wanderlodgeowner.com)
Hesperia, California

1987 FC31 “A Rare Bird”
(300HP 3208TA/ZF)

Towables:
2007 Grand Cherokee CRD, 28’ Wells Cargo Express Wagon
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  #2  
Old 08-12-2022
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DFB052686 DFB052686 is offline
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I’m going to try and consolidate airbag replacement info in here, unless it’s not allowed

Safety first:
http://www.wanderlodgeownersgroup.co...ead.php?t=1166

88 FC info from Randy utilizing a pit
http://www.wanderlodgeownersgroup.co...ead.php?t=2593
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-Dennis (direct email please! dennis@wanderlodgeowner.com)
Hesperia, California

1987 FC31 “A Rare Bird”
(300HP 3208TA/ZF)

Towables:
2007 Grand Cherokee CRD, 28’ Wells Cargo Express Wagon
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  #3  
Old 08-12-2022
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cdamen cdamen is offline
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Dennis, It has been a long time since I did mine on my 87FC . I remember removing the exhaust wrap on the down pipe. You have to soak the bolt on top and the air line with kroll or pb . You will want to get regular sized nuts to replace the ones on there now. I think that I also had to cut the wrench in half. To make things easier I also removed the tire and tie rod.
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Old 08-12-2022
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Randy Dupree Randy Dupree is offline
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WE made it look easy,i had a great helper in those days and he and I took turns doing the wrenching.
Hes also a little man,he can get where i can only look.
Something i do is i leave the bottom bolt loose,and i air the bags up before i tighten that bottom bolt.
The bags get a little twisted when you suck the air out of them and i don't like the bag to be twisted when i air the bus up.
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  #5  
Old 08-12-2022
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It always looks easy in pictures of others working!! One of my favorite kinds of work.

Think it’s worth it to pull the exhaust pipe off??

If so, where to remove? Turbo outlet? Is there a joint “easier” to access, have had a round of fighting with the exhaust insulation, it won. Rematch on soon.

Bought special goggles for the job, that actually work and aren’t large, used rain-x anti fog on the insides… it’s been 100 and humid at minimum, for weeks and weeks now… making the job harder to commit too.

-I did replace both soft brake lines, simplest, cheapest and easiest peace of mind ever, while the wheels are off. To anyone new to HD brakes, the brass fitting stays with the OLD hose, and new hose will have a new brass fitting, it allows swivel.
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-Dennis (direct email please! dennis@wanderlodgeowner.com)
Hesperia, California

1987 FC31 “A Rare Bird”
(300HP 3208TA/ZF)

Towables:
2007 Grand Cherokee CRD, 28’ Wells Cargo Express Wagon

Last edited by DFB052686; 08-12-2022 at 10:33 PM. Reason: Add photos
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  #6  
Old 08-13-2022
tqwrench tqwrench is offline
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Quote:
Originally Posted by DFB052686 View Post
I did replace both soft brake lines, simplest, cheapest and easiest peace of mind ever, while the wheels are off. To anyone new to HD brakes, the brass fitting stays with the OLD hose, and new hose will have a new brass fitting, it allows swivel.
Could you share part numbers on those brake hoses, please? I'd like to do mine too while I'm in the middle of this brake job.
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1984 FC-33RB Blue/White
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Old 08-13-2022
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Bad Latitude Bad Latitude is offline
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I replaced all front bags on my 87 FC35 without removing any other components. Not sure if your exhaust is different. IIRC, 3/4” and 5/8” wrenches cut down short ( I cut off the box end) and a stubby bottle jack for separating the frame and suspension. Sprayed the heck out of the nuts for a few days.
In my case with the original low-profile nuts I found that loosening them to slide a sawzall blade between the frame and bag made quick work of the stud and air tube. Remove air line and lower nut first. No tire removal, no pit.
Hope this helps
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Old 08-13-2022
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Bad Latitude Bad Latitude is offline
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Quote:
Originally Posted by tqwrench View Post
Could you share part numbers on those brake hoses, please? I'd like to do mine too while I'm in the middle of this brake job.
Just measure the length and go to your local Napa or truck parts store. They are standard air hoses, just different lengths.
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  #9  
Old 08-13-2022
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1984Lodge 1984Lodge is offline
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I tell you I have changed quite a few airbags on PT's mostly, I know the front of an FC is going to be much tighter. My go to tool for these is my 1/2" tite reach impact extender. Gets you in those tight spots and allows you to run those airbag nuts of quickly. Generally does not work on the bottom nuts since the suspension is in the way, I usually use a ratching wrench on those. I am sure its a tight spot up there with the engine etc crammed up there in the front.

Here is what I am talking about:
https://tite-reach.com/products/1-2-...tension-wrench
I use my 3/4" milchaukee impact on it and I have not broken it yet... so do not be afraid to use your impact on it.

Check out this video of me using the tite-reach, this is a tag axle bag on a WB, but shows you how its used:
https://youtu.be/Il86F512A50?t=374
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  #10  
Old 08-13-2022
tqwrench tqwrench is offline
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Quote:
Originally Posted by Bad Latitude View Post
Just measure the length and go to your local Napa or truck parts store. They are standard air hoses, just different lengths.
Hi Bill,

I did what you said. I just returned from Fleetpride in Westland. They surprised me by having quite a bit in stock. My hose practically crumbled as I started loosening it. I used a breaker bar and 1" crow's foot with a long extension to get the frame rail side loose, and just a 7/8" wrench on the can side of the hose. The brass fitting to the can wanted to stay there and I feared stripping it, so I had to cut the hose with a hacksaw, then I put a 6-point socket on it and it came off. The hose I bought was (qty. 2) 454024, not sure if Fleetpride's OTR brand or just Fleetpride, but it has a Fleetpride sticker on it. I got new cans too. I compared hoses side to side, on my coach they were the same length. About 22", the ones Fleetpride sold me were 24". Hopefully that doesn't cause an issue. I'll take good look afterwards to ensure it's not rubbing the tire or something else.


Edit. Adding link to hose. Tramec brand according to Fleetpride's site: https://www.fleetpride.com/parts/tra...ssembly-454024
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