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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: Joebus on April 14, 2012, 06:14:58 AM

Title: MC8 Front air bags
Post by: Joebus on April 14, 2012, 06:14:58 AM
I few weeks back I had a font airbag failure. John at Central Florida Bus Repairs looked after the repair "Great service" (Thanks Ace for the reference)  However I now have found a small leak in another front bag.

A few years back I replaced all the rear bags with the "rolling lob" type and has worked great. I think I need to do the same with the front axle. Would anyone know the part # for the front bags. MCI has a conversion kit, but it is basically just the airbags, and instructions , and I believe I could source them local (we are back in Canada) for less money (if I had the part #)

Thanks
Title: Re: MC8 Front air bags
Post by: bottomacher on April 14, 2012, 06:53:36 AM
When you get the price, consider the shipping amount- it's free at MCI.
Title: Re: MC8 Front air bags
Post by: Stormcloud on April 14, 2012, 08:04:41 AM
Is the bag itself leaking, or is the bag leaking around the bead flange?

I had a problem with one of the rear bags leaking on my MC7. We tried 2 new bags, replaced the flange and bolts, re-cleaned the plate I it looked like new steel after sanding it) and verified it was not bent. Still leaked.  Tried tire bead sealer; worked for about 6 months then started leaking again. Final solution was to squirt some liquid tire sealant (green slimy stuff) into the bag when the bottom plate was undone. The sealant found it's way to the leak and stopped it. No chance of the goo getting into the air system unless the bus ends up on it's roof.

We checked the bead flanges suppied by MCI, and found some poor quality control in the flanges; good idea to check these first on a flat surface before installing.

Regards.

Mark
Title: Re: MC8 Front air bags
Post by: Ed Hackenbruch on April 14, 2012, 08:16:35 AM
Mark, if the bus ends up on the roof, i would guess that the last thing you would be worried about is a little bit of green slime getting into the air system. ;D
Title: Re: MC8 Front air bags
Post by: Lin on April 14, 2012, 09:31:46 AM
If your bus has never been rolled over on its roof, how do you tickle its stomach?
Title: Re: MC8 Front air bags
Post by: Joebus on April 14, 2012, 10:06:26 AM
Thanks for the suggestions. The bag itself is leaking through a small pinhole.

I have a local supplier that claims he can get the bag if I can supply a number. I would expect MCI has sourced an existing bag from a supplier, I don't believe they would be propitiatory to MCI.

I have a coach with three older airbags (one leaking) I think I would rather make the changeover. The ride is a lot better with the "new style" bags
Title: Re: MC8 Front air bags
Post by: Stormcloud on April 14, 2012, 10:06:46 AM
" How to you tickle its belly??"

From a pit. ;D
Title: Re: MC8 Front air bags
Post by: Geoff on April 14, 2012, 11:40:25 AM
I have a part # 04321b2

http://www.raneystruckparts.com/goodyear-airbag-bellows-style-air-spring-mci-8-9-bus-application-drive-axle/ (http://www.raneystruckparts.com/goodyear-airbag-bellows-style-air-spring-mci-8-9-bus-application-drive-axle/)
Title: Re: MC8 Front air bags
Post by: Chopper Scott on April 14, 2012, 02:17:57 PM
I got my kits from Mohawk.     https://www.mohawkmfg.com/ (https://www.mohawkmfg.com/)
Title: Re: MC8 Front air bags
Post by: RJ on April 14, 2012, 03:56:50 PM
Joe -

From the same site that Geoff mentioned, here's the front bag:
http://www.raneystruckparts.com/goodyear-airbag-bellows-style-front-air-spring-mci-8-9-bus-application/ (http://www.raneystruckparts.com/goodyear-airbag-bellows-style-front-air-spring-mci-8-9-bus-application/)

FWIW & HTH. . .

;)