MC5 Air suspension
 

MC5 Air suspension

Started by Dreadnought, June 12, 2017, 09:36:55 AM

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Dreadnought

I started up my bus in the camp ground, as I do periodically. I've been running it regularly now, however this time, as the air suspension powered up- one corner - the front right, didn't pump up as much or as tall as it should. From the front poor Dreadnought looks like its keeling over slightly. All the other corners seemed normal. In the past when I powered up with a flat- even the side with the flat tyre charged to full normal height!

Any suggestions of how to trouble shoot this- what components to look at and if there are any specialists in the Elkhart area that youd trust?

Or would it mean driving back to my favourite mechanic in MN- with the bus keeling over?!

Cheers
Live Fast, Live Well, Live Free

1964 MCI MC5 8v71

TomC

Do you have the original automatic air suspension leveling valves? If so, you have one in front, two in back.
Or do you have manual valves?
Tom & Donna Christman. 1985 Kenworth 40ft Super C with garage. '77 AMGeneral 10240B; 8V-71TATAIC V730.

Dreadnought

I think they are the original.

How do I check?

Is there something I can take a picture of and post here to clarify?
Live Fast, Live Well, Live Free

1964 MCI MC5 8v71

bevans6

As tom says, the rear axle sets both rear ride height, and levels the entire bus.  The front pair are connected together, air up as a single unit side to side, and only set front ride height.  You're probably just noticing a little difference in rear level that will go away once you move the bus.

1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
Allison MT-647
Tatamagouche, Nova Scotia

RJ

I agree with Bryan - take the coach out for a drive (10-15 minutes) and see what happens.

FWIW & HTH. . .

;)
1992 Prevost XL Vantaré Conversion M1001907 8V92T/HT-755 (DDEC/ATEC)
2003 VW Jetta TDI Sportwagon "Towed"
Cheney WA (when home)

Dreadnought

Thanks guys, Ill take it out for a blast either this week or next, when I get the time to get all of my furniture and personal effects strapped down!
Live Fast, Live Well, Live Free

1964 MCI MC5 8v71

buswarrior

x 2.

Drive it. The suspension connections points will be bound sufficient that it doesn't readily jump to ride height.

You should hear what it sounds like when you air up after sitting down on the stops for the winter!!

Bang, creak, snap, bounce!

happy coaching!
buswarrior
Frozen North, Greater Toronto Area
new project: 1995 MCI 102D3, Cat 3176b, Eaton Autoshift

Dreadnought

Quote from: buswarrior on June 13, 2017, 08:37:10 AM
x 2.

Drive it. The suspension connections points will be bound sufficient that it doesn't readily jump to ride height.

You should hear what it sounds like when you air up after sitting down on the stops for the winter!!

Bang, creak, snap, bounce!

happy coaching!
buswarrior

Yea- it sounded pretty normal. I'd understand if the us was sitting for a while (as it was last year before I rejuvenated it spent thousands but I've been running her every one to two weeks. We'll see how it goes
Live Fast, Live Well, Live Free

1964 MCI MC5 8v71

Dreadnought

Thanks everyone! I drove it today and it sorted itself out!

When I first powered up, it was keeling over again on that same side and for the first few moments of driving across town it did, but then it evened its way out.

Then I got a quote for interior work on my RV at a specialist and I almost keeled over!
Live Fast, Live Well, Live Free

1964 MCI MC5 8v71

brmax

 :) it's always a bit different when we forget the tooling and shop accommodations.
I suppose thats a big part why we are working ourselves on many of the task. Hell
I'd be real glad to just go birdogin for pros to do this stuff but alas the lottery ticket
Winning number still out there like a carrot.

&
Quote from: Dreadnought on June 13, 2017, 09:01:40 AM
Yea- it sounded pretty normal. I'd understand if the us was sitting for a while (as it was last year before I rejuvenated it spent thousands but I've been running her every one to two weeks. We'll see how it goes
other side of a fence i am
So have a Good day there anyhow
Floyd
1992 MC9
6V92
Allison