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12-18-2014, 03:14 PM
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#1
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Senior Member
Tiffin Owners Club
Join Date: May 2014
Location: Dade City, Fla
Posts: 219
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Silly question of the day
I have 2 hookups that are part of my air brake system. Which one can I use to inflate my tires? Top A or Bottom B or C either?
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2021 Phaeton 40IH 450HP
2018 GMC Sierra Denali
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12-18-2014, 03:18 PM
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#2
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Junior Member
Join Date: Jun 2013
Location: Pearland, TX
Posts: 18
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They are just differant connectors. Use the one that corordinates with your hose end. The top is most common..
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'94 HR Navigator 38'
'04 Jeep TJ w/4" lift
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12-18-2014, 03:19 PM
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#3
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Senior Member
Holiday Rambler Owners Club
Join Date: Aug 2010
Posts: 9,750
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Bottom one.
Top fitting is probably for tow truck to air up your coach.
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Ben & Sharon
2008 43' Holiday Rambler Scepter PDQ
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12-18-2014, 03:20 PM
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#4
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Senior Member
Newmar Owners Club
Join Date: Oct 2009
Posts: 10,310
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Quote:
Originally Posted by Reelgator
I have 2 hookups that are part of my air brake system. Which one can I use to inflate my tires? Top A or Bottom B or C either?
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It would have to be the bottom one, if you plug the hose into the top one, you would have the wrong end to use the tire chuck to fill the tires. I would follow both lines, to see where they go if you have not yet, to see what the double setup is. The top one is open, unless a check valve is used?
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2012 Essex 4544 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006 Ultra & 1989 Springer, 2003 Harley-Davidson
FLHR Road King Anniversary
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12-18-2014, 03:29 PM
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#5
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Senior Member
Holiday Rambler Owners Club
Join Date: Aug 2010
Posts: 9,750
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I have 4 at that block. 2 are my tank drains.
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Ben & Sharon
2008 43' Holiday Rambler Scepter PDQ
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12-18-2014, 03:54 PM
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#6
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Senior Member
Country Coach Owners Club Retired Fire Service RVer's
Join Date: Feb 2013
Location: Ocala, Florida
Posts: 6,295
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I agree with the bottom one.
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FMCA #F431170, GS #822128658, Escapees SKP #112655
2012 Airstream Mercedes Interstate Class B
[SIGPIC][/SIGPIC]
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12-18-2014, 04:05 PM
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#7
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Senior Member
Join Date: Jan 2011
Location: Santa Clarita, CA
Posts: 929
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The bottom one. The top one is used to fill the air tanks and allow the parking brake to be released in the event the rig needs to be towed.
Steve
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12-18-2014, 07:32 PM
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#8
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Senior Member
Join Date: Nov 2011
Location: Polk City Florida
Posts: 1,930
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The Bottom, Final answer !
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Don and Nancy
[2018 Tiffin Bus 40 AP, 2022 Ford Edge ST , 9yr old sisters Sara n Kaycee, Havanese, Electric Catrike
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12-18-2014, 08:06 PM
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#9
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Senior Member
Join Date: Feb 2013
Location: Graham, WA
Posts: 773
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Although you'll have air, pretty rough topping off tires that need 110-120 psi with a compressor that kicks on around 90 psi and shuts off around 125 psi. I care a 6 gal 150psi compressor. Now I can top tires as needed.
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2006 Gulfstream Friendship G7, Cat C7 and Allison 6 spd
Honda VTX and Cruiser Lift on the back
Blue Ox Aladdin, Brake Buddy, 2019 Chevy Blazer RS toad
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12-18-2014, 08:21 PM
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#10
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Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2006
Location: MotherLoad foothills approx.60 m.s east of Sacramento
Posts: 1,281
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Bottom one...top is open to receive air from another source. Now I'm wondering where mine is, on my 2001 Dynasty.
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Full time since Nov 2012 RVM#41 Gary and Marian Hill 2001 Monaco Dynasty Jack 38' 370 hp ....If it ain't broke I can still fix it.
Like putting shoes on an octopuss, so are the days of our lives.... 
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12-18-2014, 08:32 PM
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#11
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Senior Member
Fleetwood Owners Club
Join Date: Dec 2011
Location: Willow Lakes RV & Golf Resort, FL
Posts: 3,163
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Quote:
Originally Posted by djbmsu
The Bottom, Final answer !
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Clay & Pebble
2012 Providence 42 M. Spartan Chassis, 450 ISL
Ford Edge toad, RM All Terrane, TST TPMS, SMI Air Force One, RVM95....
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12-18-2014, 08:35 PM
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#12
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Senior Member
Fleetwood Owners Club
Join Date: Dec 2012
Location: Arkansas
Posts: 12,164
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Top is for hot air, bottom is for.... Oh never mind!
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Tim & Mary Discovery 40X. Jeep GCL RVM32
"I've been lost now, days uncounted..."GFR"
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