Ride Height

[iwander_85pt40]

Steve,

According to the Ridewell service manual for my 85PT40, the ride
height is checked/adjusted by measuring the height of the pedestal,
top to bottom, with air bags fully pressurized, on a level surface.
For my rig, the steer axle pedestal heights are 6.75 inches and the
drive axle pedestal heights are 8.06 inches.

This specification is for the Ridewell "Allair" suspension, models
RAS-227 and RAD-227.

The air suspensions on the PT40's and PT38's may or may not be
different. If you don't have the service manual, maybe someone on the
forum with a PT38 has one and can verify the specs.

The body to ground measurement requires, among other things, that your
rig be parked on a very level surface, that you don't do a vertical
measurement into a slight depression in the ground, and that your
tires are evenly inflated.

However, the pedestal height measurement, which still requires a level
surface to adjust, measures the mounting height between the frame and
axle, and determines the ride height with more accuracy.

It appears your rear height level is too high. I'd adjust it
according to pedestal height. The body to ground measurement can be
used to occasionally spot check your ride height to give you a heads
up about a potential problem.



Phil and Christina Corpus
'iWander' 85PT40
Southern California


--- In WanderlodgeForum@yahoogroups.com, "trvlngnrs"
wrote:
>
> I pulled the PT out of storage and drove her to my house. When I was
> sliding a piece of plywood under to catch any oil drips, I noticed the
> rear most air bags. They seemed to be hyperinflated. I could see about
> 1.5 - 2 inches of a black ring, above were it was rubbed shiney on the
> lower airbag pedestal (for lack of a better word, by pedestal I mean
> the hour glass shaped thing the airbag slides up and down on.) The
> airbag seemed to be at the top portion of the pedestal.