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Purpose of Air System Switch
#1
Hello, everyone. Glenn Parker, of Austin TX, here with my first post. My wife (Laureen) and I recently bought a 1984 Newell 35' coach that had been posted on this site by the previous owner in Gridley, CA. My wife's BIL (Clarke Hockwald) is a member of this forum and helped us evaluate the coach thoroughly before the purchase and we are very happy with it. Put new tires on it in Gridley and had a little maintenance done at All Aboard America in Mesa, AZ before heading home to Texas. One thing that is puzzling me is that I don't know the function of one switch in the center console that seems to be related to the house air system (all the leveling switches are right there). It is unmarked and is the bottom switch in the photo (or the far right, depending on how the photo appears). I have had the switch in both positions and can't seem to tell any difference in operations. Any ideas as to its purpose?

   
Glenn & Laureen Parker
Austin, Texas
1984 Newell 35'
6v92 Detroit Diesel, Allison 6 speed trans
2005 Honda Element toad
2007 Honda S2000 fun car
#2
the label is not visible in the picture. what does it say?

tom
2002 45'8" Newell Coach 608  Series 60 DDEC4/Allison World 6 Speed HD4000MH

#3
Welcome Glenn! Every coach has a mystery switch. Since it's not labeled like the others and probably not a factory install it could be for something not related to the air leveling system. Possibly a light somewhere that the previous owner added? Could be inside or outside?
Do you have a labeled switch for the Jake brake? Again if not factory the PO could have added that.
Forest & Cindy Olivier
1999 Foretravel 36' U320
former 1998 Newell 45' 2 slide #486 

former 1993 Newell 39' #337 
2011 Chevy Tahoe 

2010 Silverado w/ RZR 570LE
#4
It has no label at all, Tom. Clarke and I could not figure out its function. Maybe one day down the line I'll have that "ah ha" moment when it become obvious what that switch is for. If that's the biggest problem I have for the next year with this 35 year old Newell I will be one happy guy.

Forest, the Jake brake has a switch over near the driver side wall, so its not that.
Glenn & Laureen Parker
Austin, Texas
1984 Newell 35'
6v92 Detroit Diesel, Allison 6 speed trans
2005 Honda Element toad
2007 Honda S2000 fun car
#5
I don't know about that vintage coach...but maybe if you got behind the panel, someone marked the wires with a label??
Bill Johnson
2003 Newell #653 Quad Slide Cat C-12 engine with Motorcycle lift 
2011 Jeep Wrangler, 2018 BMW 1200GS Adventure Motorcycle
Auburn, Alabama
#6
So the switch is located in the same vicinity as the manual air leveling system. Probably associated with the leveling system in some way.

The switch is unlike all the others, you could guess that either it is a replacement, add on, or has a special function. It appears to be one of those switches that you have to lift the lid to access the switch. Like the button used to scram a nuclear reactor. Do you have to lift the red lid to activate the switch or is that the actual switch in the photo.

The label under the switch appears to say “air dump”.

Given all the clues above, my guess is it is a switch to dump all the air in the air bags.

You say it does nothing when activated. Could it be that it and another switch need to be pressed to activate a function? In other words is the red switch a safety device. After all dumping all the air in the bags is not something you would want to do accidentally.
Richard and Rhonda Entrekin
99 Newell, 512
Subaru Outback Toad
Inverness, FL (when we're home Cool )
#7
Richard, he is referring to the switch between the air dump switch and left rear leveling switch. It appears to have been added after factory, and nothing happens when you switch it back and forth. It is a mystery to me.

Clarke and Elaine Hockwald
1982 Newell Classic, 36', 6V92 TA
2001 VW Beetle Turbo
Cannondale Tandem
Cannondale F600
Cannondale Bad Boy
Intense 5.5 MTB
http://whatsnewell.blogspot.com
#8
You might try getting a Harbor Freight or similar wire tracer tool. About 25.00. Puts a signal on the wires from your mystery switch. and you then can go to the bay you think the wires might run thru or terminate in and locate them. You might then have the "ah ha" moment we have all had with out mystery switches.

http://www.harborfreight.com/cable-tracker-94181.html

Good luck,

Guy
Guy & Sue
1984 Classic 40' #59
#9
Oops, cain’t READ
Richard and Rhonda Entrekin
99 Newell, 512
Subaru Outback Toad
Inverness, FL (when we're home Cool )
#10
could be the air leveling switch needs to be on for the dump switch to work.

tom
2002 45'8" Newell Coach 608  Series 60 DDEC4/Allison World 6 Speed HD4000MH



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