BAD vibration at 15mph, deflated rear air bags. Help!

[ronmarabito2002]

On the air bag inflation. You need to check the linkage to your air
valve which is linked to the axle. Might have come loose or broke
when you hit the speed bump.

Another item to check on the vibration is the rear end. Last summer I
lost a chunk out of the ring gear and it vibrated. If you have a
telescoping magnet, try inserting it into the inspection port to see
if it comes out with any metal.

R.E. (Ron) Marabito, Dallas, TX 92WB40


--- In WanderlodgeForum@yahoogroups.com, "transit360" wrote:
>
> Greetings all. I first want to apologize as my bus is not a
> Wanderlodge, but I am a Bluebird enthusiast and this is the closest
> group I can find!
> My '98 Bluebird Q-bus diesel pusher has a terrible vibration
> coming from what FEELS like the rear. It started after I hit a speed
> bump unexpectedly way too fast. At least, I think that's when it
> started.
> Description: No vibration until about 10mph, frequency of vibe
> increasing until the worst at 15mph, then gradually gets better. I
> haven't taken it over 35mph yet...limped it home. There if I put the
> tranny in neutral while driving or if I rev the engine, so it's
> definately in the drivetrain. The bus DID NOT have this problem
> earlier today while driving, even on the interstate.
> What it feels like: Like you going over a wood bridge with
> planks perpindicular to your travel. High speed vibration...so I don't
> assume it's tire related. Kinda feels like my Jeep when the front
> driveshaft was out of balance at 60mph, but on the bus it occurs at
> low speeds.
> What I've checked: Of course I checked the driveshaft first. All
> seemed fine. Compared it to my other good bus and was the same. THE
> ONLY THING I noticed different were that my rear air bags were
> deflated entirely, even though my air gauge was fine and all air-
> related accessories were fine. Could this cause my vibration?
> I started the bus up and aired it up all the way and re-checked
> bags. The same...deflated. NO audible leaks, either. I don't know if
> the air bags were deflated before I hit the bump. It's possible they
> could've been like this awhile.
> As a side note, my air-moisture ejector constantly vibrates
> under your feet while standing above it inside the bus. It constantly
> build pressure until it pops off. The air ejector stops vibrating
> while the air is actually ejecting, then starts right back up again.
> I'm wondering if my air bags have been like this for awhile and this
> is why the ejector valve has been doing this over the last few months.
> So that's it? Sorry for the long post. Any suggestions?
>
> Steve
> Two '98 Bluebird Q-bus Partybuses
>