Wanderlodge Gurus - The Member Funded Wanderlodge Forum

I HAVE A 1990 WB40 AND WHEN I START IT IT TAKES ALONG TIME TO BUILD UP AIR
ATLEAST I THINK ITS ALONG TIME ITS NEW TO ME AND IM NOT SURE HOW LONG IT SHOULD
TAKE
ALSO I HAVE TO PUT IT IN HIGH RPM TO GET IT TO GO UP
AFTER I GET IT UP TO ABOUT 115 WHEN I BACK OUT OF DRIVEWAY BY THE TIME I GET IT
TO THE ROAD IT DROPS TO 80 THE ONLY TIME IT STAYS HIGH IS ON THE ROAD AT A GOOD
SPEED IS THIS NORMAL

ALSO THE HOSES AND THE SWITCH PLATE FOR THE GREY AND BLACK WATER DUMP IS LEAKING
A BIT NOT THAT BAD DOES ANYONE KNOW WHERE TO GET REPLACMENT PARTS

ALL HELP IS APPRCIATED THANKS
JAMIE BRANDT
1990 WB40
FLORIDA

The switch/valves are Clippard MJTV-4, still available from the manufacturer:
http://www.clippard.com/store/display_de...sku=MJTV-4

I've replaced both of mine as they leaked in increasing fashion.

Those small leaks, though, won't cause the problem you are seeing. You have a
significant leak somewhere, probably in the air bag system, or in the brakes.

You have two air gaugues. One is for the tag-axle air bags, and the other is for
the brakes front and rear (two needles). If you shut down, both of those should
hold air for a significant amount of time. If they do, then the problem is
elsewhere.

When I first got mine, the front air bags would significantly drop in less than
15 minutes. I'm not the one who fixed it, but I'm told that the leveler valve
was actually coming apart. Point, though, is that one way or another shutting
down when you have full air should show a symptom somewhere.

Don Bradner
90 PT40 "Blue Thunder"
My location: http://www.bbirdmaps.com/user2.cfm?user=1

On 1/8/2011 at 8:40 PM jamiejbrandt wrote:

>I HAVE A 1990 WB40 AND WHEN I START IT IT TAKES ALONG TIME TO BUILD UP
>AIR ATLEAST I THINK ITS ALONG TIME ITS NEW TO ME AND IM NOT SURE HOW LONG
>IT SHOULD TAKE
>ALSO I HAVE TO PUT IT IN HIGH RPM TO GET IT TO GO UP
>AFTER I GET IT UP TO ABOUT 115 WHEN I BACK OUT OF DRIVEWAY BY THE TIME I
>GET IT TO THE ROAD IT DROPS TO 80 THE ONLY TIME IT STAYS HIGH IS ON THE
>ROAD AT A GOOD SPEED IS THIS NORMAL
>
>ALSO THE HOSES AND THE SWITCH PLATE FOR THE GREY AND BLACK WATER DUMP IS
>LEAKING A BIT NOT THAT BAD DOES ANYONE KNOW WHERE TO GET REPLACMENT PARTS
>
>ALL HELP IS APPRCIATED THANKS
>JAMIE BRANDT
>1990 WB40
>FLORIDA
>

Brake spring chamber bad?
Marty Gregg
95BMC37
Kennewick WA

The first thing I would do is walk around the coach with it running and listen
for air leaks. Second, have someone do the walk around for you while you are in
the coach with it running, parking brake released and your foot on the brake
pedal.(any of the brake chambers could be leaking either on the foot brake side
or parking brake side) I'm not sure whether that air compressor is belt driven
or not but if it is, check the belt. Also, you should have a filter that catches
any moisture and "spits" it out. Sometimes that spitter valve leaks but you
should hear the leak on your walk around.
By the way, it should take less than five minutes to build your air up. Also,
if your air pressure drops to around 60 psi while driving your parking brake
will set and lock the brakes. You don't want that to happen! If you have
questions and want to e-mail me direct I will help you in any way I can. I'm not
a mechanic but, Ive owned trucks for almost 35 years so I've learned a little.
Ray Pander
2003 LXI
1988 35' FC


--- In WanderlodgeForum@yahoogroups.com, "jamiejbrandt"
wrote:
>
> I HAVE A 1990 WB40 AND WHEN I START IT IT TAKES ALONG TIME TO BUILD UP AIR
ATLEAST I THINK ITS ALONG TIME ITS NEW TO ME AND IM NOT SURE HOW LONG IT SHOULD
TAKE
> ALSO I HAVE TO PUT IT IN HIGH RPM TO GET IT TO GO UP
> AFTER I GET IT UP TO ABOUT 115 WHEN I BACK OUT OF DRIVEWAY BY THE TIME I GET
IT TO THE ROAD IT DROPS TO 80 THE ONLY TIME IT STAYS HIGH IS ON THE ROAD AT A
GOOD SPEED IS THIS NORMAL
>
> ALSO THE HOSES AND THE SWITCH PLATE FOR THE GREY AND BLACK WATER DUMP IS
LEAKING A BIT NOT THAT BAD DOES ANYONE KNOW WHERE TO GET REPLACMENT PARTS
>
> ALL HELP IS APPRCIATED THANKS
> JAMIE BRANDT
> 1990 WB40
> FLORIDA
>

One very important thing That I forgot to mention. If you discover a problem
with one of the brake chambers Do Not try to take the chamber apart yourself. If
you don't take it apart properly you could be injured.
Ray Pander
2003 LXI

--- In WanderlodgeForum@yahoogroups.com, "jamiejbrandt"
wrote:
>
> I HAVE A 1990 WB40 AND WHEN I START IT IT TAKES ALONG TIME TO BUILD UP AIR
ATLEAST I THINK ITS ALONG TIME ITS NEW TO ME AND IM NOT SURE HOW LONG IT SHOULD
TAKE
> ALSO I HAVE TO PUT IT IN HIGH RPM TO GET IT TO GO UP
> AFTER I GET IT UP TO ABOUT 115 WHEN I BACK OUT OF DRIVEWAY BY THE TIME I GET
IT TO THE ROAD IT DROPS TO 80 THE ONLY TIME IT STAYS HIGH IS ON THE ROAD AT A
GOOD SPEED IS THIS NORMAL
>
> ALSO THE HOSES AND THE SWITCH PLATE FOR THE GREY AND BLACK WATER DUMP IS
LEAKING A BIT NOT THAT BAD DOES ANYONE KNOW WHERE TO GET REPLACMENT PARTS
>
> ALL HELP IS APPRCIATED THANKS
> JAMIE BRANDT
> 1990 WB40
> FLORIDA
>

THANKS IT WAS VERY HELPFUL IM GOING TO GET THE PARTS TODAY
DON HOW LONG DOSE IT TAKE FOR YOUR RV TO REACH FULL PRESSURE
I HEAR AIR FROM UNDER THE FRONT RIGHT BEHIND THE GENNY ABOUT IN THE CENTER AND I
LOOKED AND I DO SEE SOME KIND OF VALVES BUT IM LEARY OF GETTING TO FAR UNDER THE
RV AND SCREWING WITH THEM I NEED TO FIND A COMPANY THAT DOSE THIS I GUESS
ANYWAY THANKS AGAIN

JAMIE BRANDT
1990 WB40
FLORIDA


--- In WanderlodgeForum@yahoogroups.com, "Don Bradner" wrote:
>
> The switch/valves are Clippard MJTV-4, still available from the manufacturer:
> http://www.clippard.com/store/display_de...sku=MJTV-4
>
> I've replaced both of mine as they leaked in increasing fashion.
>
> Those small leaks, though, won't cause the problem you are seeing. You have a
significant leak somewhere, probably in the air bag system, or in the brakes.
>
> You have two air gaugues. One is for the tag-axle air bags, and the other is
for the brakes front and rear (two needles). If you shut down, both of those
should hold air for a significant amount of time. If they do, then the problem
is elsewhere.
>
> When I first got mine, the front air bags would significantly drop in less
than 15 minutes. I'm not the one who fixed it, but I'm told that the leveler
valve was actually coming apart. Point, though, is that one way or another
shutting down when you have full air should show a symptom somewhere.
>
> Don Bradner
> 90 PT40 "Blue Thunder"
> My location: http://www.bbirdmaps.com/user2.cfm?user=1
>
> On 1/8/2011 at 8:40 PM jamiejbrandt wrote:
>
> >I HAVE A 1990 WB40 AND WHEN I START IT IT TAKES ALONG TIME TO BUILD UP
> >AIR ATLEAST I THINK ITS ALONG TIME ITS NEW TO ME AND IM NOT SURE HOW LONG
> >IT SHOULD TAKE
> >ALSO I HAVE TO PUT IT IN HIGH RPM TO GET IT TO GO UP
> >AFTER I GET IT UP TO ABOUT 115 WHEN I BACK OUT OF DRIVEWAY BY THE TIME I
> >GET IT TO THE ROAD IT DROPS TO 80 THE ONLY TIME IT STAYS HIGH IS ON THE
> >ROAD AT A GOOD SPEED IS THIS NORMAL
> >
> >ALSO THE HOSES AND THE SWITCH PLATE FOR THE GREY AND BLACK WATER DUMP IS
> >LEAKING A BIT NOT THAT BAD DOES ANYONE KNOW WHERE TO GET REPLACMENT PARTS
> >
> >ALL HELP IS APPRCIATED THANKS
> >JAMIE BRANDT
> >1990 WB40
> >FLORIDA
> >
>

I really don't know how long it takes to air my coach up with the engine because
I never do it that way. My startup procedure involves using both block heater
and aux air pump from the time I get up on any morning I'm going to travel -
that way I can just start and almost immediately roll.

Don Bradner
90 PT40 "Blue Thunder"
My location: http://www.bbirdmaps.com/user2.cfm?user=1

On 1/10/2011 at 2:44 PM jamiejbrandt wrote:

>THANKS IT WAS VERY HELPFUL IM GOING TO GET THE PARTS TODAY
>DON HOW LONG DOSE IT TAKE FOR YOUR RV TO REACH FULL PRESSURE
>I HEAR AIR FROM UNDER THE FRONT RIGHT BEHIND THE GENNY ABOUT IN THE CENTER
>AND I LOOKED AND I DO SEE SOME KIND OF VALVES BUT IM LEARY OF GETTING TO
>FAR UNDER THE RV AND SCREWING WITH THEM I NEED TO FIND A COMPANY THAT
>DOSE THIS I GUESS ANYWAY THANKS AGAIN
>
>JAMIE BRANDT
>1990 WB40
>FLORIDA
>
>
>--- In WanderlodgeForum@yahoogroups.com, "Don Bradner"
>wrote:
>>
>> The switch/valves are Clippard MJTV-4, still available from the
>manufacturer:
>> http://www.clippard.com/store/display_de...sku=MJTV-4
>>
>> I've replaced both of mine as they leaked in increasing fashion.
>>
>> Those small leaks, though, won't cause the problem you are seeing. You
>have a significant leak somewhere, probably in the air bag system, or in
>the brakes.
>>
>> You have two air gaugues. One is for the tag-axle air bags, and the
>other is for the brakes front and rear (two needles). If you shut down,
>both of those should hold air for a significant amount of time. If they
>do, then the problem is elsewhere.
>>
>> When I first got mine, the front air bags would significantly drop in
>less than 15 minutes. I'm not the one who fixed it, but I'm told that the
>leveler valve was actually coming apart. Point, though, is that one way or
>another shutting down when you have full air should show a symptom
>somewhere.
>>
>> Don Bradner
>> 90 PT40 "Blue Thunder"
>> My location: http://www.bbirdmaps.com/user2.cfm?user=1
>>
>> On 1/8/2011 at 8:40 PM jamiejbrandt wrote:
>>
>> >I HAVE A 1990 WB40 AND WHEN I START IT IT TAKES ALONG TIME TO BUILD UP
>> >AIR ATLEAST I THINK ITS ALONG TIME ITS NEW TO ME AND IM NOT SURE HOW
>LONG
>> >IT SHOULD TAKE
>> >ALSO I HAVE TO PUT IT IN HIGH RPM TO GET IT TO GO UP
>> >AFTER I GET IT UP TO ABOUT 115 WHEN I BACK OUT OF DRIVEWAY BY THE TIME I
>> >GET IT TO THE ROAD IT DROPS TO 80 THE ONLY TIME IT STAYS HIGH IS ON THE
>> >ROAD AT A GOOD SPEED IS THIS NORMAL
>> >
>> >ALSO THE HOSES AND THE SWITCH PLATE FOR THE GREY AND BLACK WATER DUMP IS
>> >LEAKING A BIT NOT THAT BAD DOES ANYONE KNOW WHERE TO GET REPLACMENT
>PARTS
>> >
>> >ALL HELP IS APPRCIATED THANKS
>> >JAMIE BRANDT
>> >1990 WB40
>> >FLORIDA
>> >
>>
>
>
>
>
>------------------------------------
>
>Yahoo! Groups Links
>
>
>

The standards for airing up and testing brakes for your air brake system are the
same as a big rig. The following link will provide guidelines for testing your
brakes and timing of air loss. As an OTR driver I perform these tests daily so
nothing grabs me at 70mph and 80K pounds. It would give you and indication of
where to start looking also. Some of the information is not applicable to the
coach because you do not have air brakes on a trailer. You bleed down test is
exceedingly important to check the protection valve.
http://iowadot.gov/mvd/ods/cdl/section5.pdf.

--- In WanderlodgeForum@yahoogroups.com, "jamiejbrandt"
wrote:
>
> I HAVE A 1990 WB40 AND WHEN I START IT IT TAKES ALONG TIME TO BUILD UP AIR
ATLEAST I THINK ITS ALONG TIME ITS NEW TO ME AND IM NOT SURE HOW LONG IT SHOULD
TAKE
> ALSO I HAVE TO PUT IT IN HIGH RPM TO GET IT TO GO UP
> AFTER I GET IT UP TO ABOUT 115 WHEN I BACK OUT OF DRIVEWAY BY THE TIME I GET
IT TO THE ROAD IT DROPS TO 80 THE ONLY TIME IT STAYS HIGH IS ON THE ROAD AT A
GOOD SPEED IS THIS NORMAL
>
> ALSO THE HOSES AND THE SWITCH PLATE FOR THE GREY AND BLACK WATER DUMP IS
LEAKING A BIT NOT THAT BAD DOES ANYONE KNOW WHERE TO GET REPLACMENT PARTS
>
> ALL HELP IS APPRCIATED THANKS
> JAMIE BRANDT
> 1990 WB40
> FLORIDA
>