what is this thing on the rear 6 pack? - Luxury Coach Lifestyles
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Old 11-16-2011, 02:34 AM   #1
encantotom
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Default what is this thing on the rear 6 pack?

my rear 6 pack of airbag solenoids is leaking. the part number is partially worn off. my old newell didnt have this on it. it is the nut with a hole in it and black wires coming out the bottom. the suds is windex i sprayed looking for leaks.

what is it and does anyone have a part number?

thanks

tom
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Old 11-16-2011, 03:08 AM   #2
HoosierDaddy
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Air pressure gauge sender?
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Old 11-16-2011, 01:27 PM   #3
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ride height control valve ?

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Old 11-16-2011, 06:10 PM   #4
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I'm betting on pressure switch.

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Old 11-16-2011, 09:47 PM   #5
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Checked my rear six pack and only have the red air line going to the air dryer at the rear pressure gauge. Where does the yellow air line and wires go? Without that info I'd guess the previous owner tied into the air--probably associated with the trailer they were towing.................just my guess.
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Old 11-16-2011, 09:54 PM   #6
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there definitely is a trailer air connection.

i will have to trace the lines out. i called newell and have to call back on what that is.

i also have air lines and a gauge in the small bay just behind the rear axle on the drivers side. i have no idea what it is for.

tom
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Old 11-16-2011, 10:59 PM   #7
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Have the same air lines and guage in rear compartment and was told at Newell it is part of the tag system.

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Old 11-16-2011, 11:28 PM   #8
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Tom,
Checked that compartment on my coach, but found no air lines or gauge. If the gauge is small and only goes to 30 psi I believe it to be your slide seal supply lines & regulator.
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Old 11-18-2011, 12:39 AM   #9
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i talked to mike ellis at newell today. he said it is a 20psi pressure switch that is for low pressure. if the pressure is below 20psi it lights the rear red lights on the hwh panel. he said to take it out and cap it off. he said most have just taken it out.

tom
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Old 12-01-2011, 10:23 PM   #10
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ok, i have this figured out and understand it now mostly.

i talked to HWH today. that pressure switch on the rear 6 pack is a low pressure switch for the system pressure, not the airbags. it is normally closed and opens at 85 psi. when it is closed below 85psi it will turn off the travel light on the hwh panel.

newell says that almost all of the coaches have it plugged and disconnected. with it disconnected, the system will ALWAYS think it is above 85psi.

for those inquiring minds, the part number from Hwh is rap90570 and they get 110 bucks for it. (not from me the wont).

the nason part number is sm-2b-85r/wp there will be 2-3 numbers at the end and i believe they are the date code. i bought a hwh leveling system NOS for a monaco complete with valves, manifold, 12v pump(the same one as in ours and that is why i bought it) and it has 4 nason switches on it including the same two that are on the front 6pack on mine.

i am also looking at a NOSHOK equivalent.

the front six pack has two nason pressure switches on it and they are normally closed and open at 20psi and are on each side of airbag in the front. so they are airbag pressure, NOT system pressure in the back.

btw, the nason switch that was leaking air on mine that i removed also did not work for opening and closing. so it was saying the system air was low all the time and i would guess if i had been using the leveling system much would have not had a travel light go on at all.



hope i didnt confuse anyone.

tom
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Old 12-02-2011, 12:49 AM   #11
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Tom,
Thanks for the info. Always good to see people solving problems and not just putting a band aid on it. Good job!
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Old 12-07-2011, 07:58 AM   #12
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i found a source for them. it is a nason SM-2B-85R/WP the wp meaning with a weather pack plug. mine has WL on the part number which means wire leads and then someone put a weather pack plug on it.

they are 36 dollars apiece and take 4-5 weeks to get.

i will be ordering one.

tom
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