Air Bag Ride Height Dimension - 259 Bag

[GDeen]

Tom, and anyone missing the paper manual for the chassis, this information is also contained in the link below which I provided in another thread.

http://prevostparts.volvo.com/techni.../en/manuel.asp

Download the "air system and suspension" manual under maintenance and it has the same info as what Dale provided.

[truk4u]

Gordon,

Thanks, but no PNEUMATIC DIAGRAMS for my vintage.

[Jon Wehrenberg]

Actually, I don't think air was invented yet when your bus was built.

[truk4u]

A Liberty owner bashing a Liberty owner, the shame!

[GDeen]

Gordon,

Thanks, but no PNEUMATIC DIAGRAMS for my vintage.

Following is for 89 - 2000 model years which seems to have you covered

http://prevostparts.volvo.com/techni.../pa1082-16.pdf

Document Title:


Number Manual Section Vehicle Type XL BUS, XL
PA-1082 1989-2000
16 - Suspension
16 - Coaches Equipped with Independent Front Suspension
16 - MTH Equipped with Independent Front Suspension

Page 10 has the same specs as Dale produced from his paper manual....Edit - actually says 11.5 for all 4 corners.

[phorner]

I fired up the bus yesterday (since I had the engine nice and toasty having had the Webasto on the night before) and the bus failed to achieve ride height.

The right rear air bags don't respond to the "Road" position. I can raise or lower the entire bus manually. However, the right rear corner will stay at whatever level it is placed in manually when switched to "road".

Comments??

[JIM CHALOUPKA]

Paul, sorry you're having trouble getting it up.

JIM

[dreamchasers]

I fired up the bus yesterday (since I had the engine nice and toasty having had the Webasto on the night before) and the bus failed to achieve ride height.

The right rear air bags don't respond to the "Road" position. I can raise or lower the entire bus manually. However, the right rear corner will stay at whatever level it is placed in manually when switched to "road".

Comments??

Paul,

Suspension issues are almost impossible to correctly diagnose on the forum, but visit the multimedia suspension presentation (link below). This should add a little clarity. It looks to me, with your described symptoms, either a Norgren or a ride height valve is not functioning correctly. I would look at the ride height valve first. The ride height valve is located behind the rubber flap, forward of the dual axle. You can look up under and see if the the link to the ride height has come loose. Always have you coach suspension supported before crawling underneath.

Log on the suspension overview a take a look.

http://forum.prevostownersgroup.com/...hlight=airbags

Hector

[phorner]

Thanks Hector,

My first inclination was the right-rear ride height valve, since the left side is apparently working OK.

Confounding me is that both rear ride height valves are only about a year old, so I am kind of surprised to see a problem there.

[mike kerley]

Paul, I'd dump all of the air and start over with achieving ride height. Do it several times. Most likely a valve stuck from the cold. Cycle them all several times and I'll bet it comes back...