Suspension Dump Light

[Curt Sprenger]

Our '87 PT38 gets an intermittent dash Suspension Dump light condition.
Often the light will be off for hundreds of miles. About one third of
the time the light is either bright or dim and is on/off every few seconds.

This last trip the front air springs at times would not air up to max,
close but not max. One time the front springs would not air up, had to
reset everything and then they aired up to max.

All input is appreciated.


Curt Sprenger
1987 PT38 8V92 "MacAttack Racing"
Anaheim Hills, Calif.

[Bob Lawrence]

Hi Curt,
This may be the answer....or not..
My left rear air bag would not air up completely and I replaced it
with a new leveler valve from Bluebird. Cost was 70 bucks. Solved the
problem. This may be your problem as I assume your front is like mine
and just has one leveler for the whole front system.
Just a thought.

Bob Lawrence
84 PT36
Tacoma, Wa. (With 5 months 10 days before we fulltime outa here)


--- In WanderlodgeForum@yahoogroups.com, Curt Sprenger
wrote:
>
> Our '87 PT38 gets an intermittent dash Suspension Dump light
condition.
> Often the light will be off for hundreds of miles. About one third
of
> the time the light is either bright or dim and is on/off every few
seconds.
>
> This last trip the front air springs at times would not air up to
max,
> close but not max. One time the front springs would not air up, had
to
> reset everything and then they aired up to max.
>
> All input is appreciated.
>
>
> Curt Sprenger
> 1987 PT38 8V92 "MacAttack Racing"
> Anaheim Hills, Calif.
>

[Curt Sprenger]

Thanks Bob and David,
In 2005 I replaced the left and front leveling valves, along with
Clippard air/12V valves, all work together to make the leveling system
function properly. Doesn't mean those valves are good today, they were
replaced two years ago, could be junk in the system feeding them. I had
no knowledge of them then and did not remove more that I had to, but may
dig in there again, test the valves, take the two Clippard manifolds
out and clean them, remove the air lines and blow them out as well, etc.
Looks like I have some things to check out.

Curt Sprenger
1987 PT38 8V92 "MacAttack Racing"
Anaheim Hills, Calif.



Bob Lawrence wrote:

> Hi Curt,
> This may be the answer....or not..
> My left rear air bag would not air up completely and I replaced it
> with a new leveler valve from Bluebird. Cost was 70 bucks. Solved the
> problem. This may be your problem as I assume your front is like mine
> and just has one leveler for the whole front system.
> Just a thought.
>
> Bob Lawrence
> 84 PT36
> Tacoma, Wa. (With 5 months 10 days before we fulltime outa here)
>
> --- In WanderlodgeForum@yahoogroups.com
> , Curt Sprenger
> wrote:
> >
> > Our '87 PT38 gets an intermittent dash Suspension Dump light
> condition.
> > Often the light will be off for hundreds of miles. About one third
> of
> > the time the light is either bright or dim and is on/off every few
> seconds.
> >
> > This last trip the front air springs at times would not air up to
> max,
> > close but not max. One time the front springs would not air up, had
> to
> > reset everything and then they aired up to max.
> >
> > All input is appreciated.
> >
> >
> > Curt Sprenger
> > 1987 PT38 8V92 "MacAttack Racing"
> > Anaheim Hills, Calif.
> >
>
>

[David Hanvy]

Hey Curt, Under the heading of "no guarantee" you have the same
issue, the following story might help. In March 2004, on my maiden
voyage back to TX from AZ, I experienced a problem with my tag axle
being erratic in airing up. This was intermitent but included the
Suspension Dump light staying on. I got back to Texas with only one
pit stop to change out slipping alternator belts. Once back home I
did the typical purchase of new tires, etc. and within two or three
weeks I headed out to Charleston SC. While traveling through GA, I
decided to swing by the Birds Nest in Fort Valley and ended up
staying three nights. The morning I was leaving, the darn tag axle
wouldn't air up so I walked over to the BB service dept and asked
them to have a look. They sent a couple of Techs over to the campsite
but by the time they got there the problem had gone away. The Techs
immediately removed the outside front cover (the one with the quick
release fastners) and told me that most likely the tag axle air
clippard valve was sticking. (these valves are plainly marked on my
89WB) They changed it out, charged me 30 mins labor and $76 for the
part and I was on my way over to Carolina again. I have never had
another problem. - David Hanvy 89WB Crosby, TX

--- In WanderlodgeForum@yahoogroups.com, Curt Sprenger
wrote:
>
> Our '87 PT38 gets an intermittent dash Suspension Dump light
condition.
> Often the light will be off for hundreds of miles. About one third
of
> the time the light is either bright or dim and is on/off every few
seconds.
>
> This last trip the front air springs at times would not air up to
max,
> close but not max. One time the front springs would not air up, had
to
> reset everything and then they aired up to max.
>
> All input is appreciated.
>
>
> Curt Sprenger
> 1987 PT38 8V92 "MacAttack Racing"
> Anaheim Hills, Calif.
>