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02-03-2011, 11:59 AM
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#1
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Senior Member
Join Date: Apr 2005
Posts: 121
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How much air bleed down when parked is Ok
When parked overnight my air will bleed down from 115 to 75 or so. In two days parked it will drop to around 40 pounds and the air bags will be deflated. Is this normal? How much bleed down when parked is normal / acceptable? The pressure builds up normally when the engine is started and holds fine while driving.
Thanks, Barry
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2007 HR Neptune 34SBD / 2017 Chev Colorado
Airforce One / Roadmaster Sterling
A tailhook is the exclamation point of all aviation
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02-03-2011, 12:03 PM
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#2
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Senior Member
Join Date: Dec 2010
Location: sioux falls sd
Posts: 322
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It should drop none you have a leak. Get soap water and start spraying on connections.
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2009 Dodge ram 2500 Cummins Mega Cab
1999 R29RL King of the road.
3 kids and a beautiful wife.
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02-03-2011, 12:10 PM
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#3
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Senior Member
Newmar Owners Club
Join Date: Jul 2006
Location: Wellington, Florida
Posts: 13,599
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Hi barrys,
I have a bit of a different view of bleed down.
1. The air bag system is not bleed down proof.
2. Different coaches loose air at different rates.
3. If, when parked, you can not hear air escaping, I would not worry about it.
4. If, when parked, the coach is supported by leveling jacks, the bleed down will be evident and much quicker than with the jacks retracted.
5. If you can hear air escaping, get the coach checked out.
__________________
Gary
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours
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02-03-2011, 12:36 PM
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#4
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Senior Member
Join Date: Nov 2009
Posts: 2,043
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Quote:
Originally Posted by GaryKD
5. If you can hear air escaping, get the coach checked out.
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Well... not necessarily.. on my older coach I have the older type Cruise control that uses my air system to maintain itself. There is a regulator valve inline up near the cruise pod in the engine compartment that is connected to a live air line. This regulator keeps the pressure to the cruise control mechanicals at 40psi. Everytime I shut my coach off I will hear air bleeding down from this regulator until it the entire system reaches 40psi before it stops. I thought I had a leak up there somewhere too but took it to a mechanic who described to me how that older cruise control systems on these chassis worked.
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94-Newmar Kountry Star 40-KSDP
Spartan/Cummins 8.3C-300HP/Allison 3060 WTEC-II/25yr RV Tech RVIA Certified/Onan-Cummins Certified
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02-03-2011, 12:41 PM
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#5
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Senior Member
Thor Owners Club
Join Date: Dec 2010
Location: Gastonia NC
Posts: 1,320
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I was told to dump the air out of the system when I am parked and set up. Why would you leave the air in the bags up while set up.
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Dickson and Tracy
2016 Thor Windsport 31S
2015 Fusion Titanium Hybrid
Lemon and Tucker the Pups
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02-03-2011, 12:41 PM
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#6
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Moderator Emeritus
Jayco Owners Club RV Trip Wizard
Join Date: Oct 2009
Location: Poinciana FL
Posts: 7,781
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Our new Revolution gradually lost air over about a 4 week period. I spoke to a Spartan service rep and he said this was normal.
As stated earlier, different coaches will loose pressure at different rates. I've seen some claim that their coach never loses pressure, but those claims are few and far between.
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Jay and Peggy Monroe
"Can't take it with you, not leaving any behind"
2024 Jayco White Hawk 26FK
2024 Ford Expedition
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02-03-2011, 01:49 PM
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#7
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 23,922
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"barrys".... they'll all leak down some over time. Often, you can walk around in a coach and cause it to move and make the air bags bleed a small amount of air to compensate. My bags will start to drop afer a couple of days.
"Dixieray53".....You're right about dumping and setting up for a few days, but if you're just overnighting somewhere, many of us just drop our jacks for stability (occasionally I don't even do that if it's really level) and leave the bags aired up. In the morning you won't have to wait for air up.
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Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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02-03-2011, 03:35 PM
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#8
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Senior Member
Monaco Owners Club
Join Date: Jan 2003
Location: Knoxville, TN, USA
Posts: 3,994
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Quote:
Originally Posted by barrys
When parked overnight my air will bleed down from 115 to 75 or so. In two days parked it will drop to around 40 pounds and the air bags will be deflated. Is this normal? How much bleed down when parked is normal / acceptable? The pressure builds up normally when the engine is started and holds fine while driving.
Thanks, Barry
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I always dump my air down to less than 30 lbs by using the brake before I put the jacks down. The jacks have to travel to far if you don't and the step will be to high off the ground. I do this even if only stopping for one night.
Bob
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Bob and Pam
2022 Quantum JM31
2023 Colorado Z71
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02-03-2011, 06:17 PM
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#9
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Moderator Emeritus
Jayco Owners Club RV Trip Wizard
Join Date: Oct 2009
Location: Poinciana FL
Posts: 7,781
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Quote:
Originally Posted by nodine
I always dump my air down to less than 30 lbs by using the brake before I put the jacks down. The jacks have to travel to far if you don't and the step will be to high off the ground. I do this even if only stopping for one night. Bob
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A sign of how technology changes over time. In our new Revolution the system automatically dumps air before the jacks will start to extend. I hit one button and the computers take over.
HAL has come to the RV world.
__________________
Jay and Peggy Monroe
"Can't take it with you, not leaving any behind"
2024 Jayco White Hawk 26FK
2024 Ford Expedition
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02-03-2011, 09:08 PM
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#10
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Member
Join Date: Jan 2010
Posts: 31
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My 03' Diplomat did the same. I traced it to the valve that controls the step cover slide. I could hear it leak if I opened the left front compartment where the valve is mounted. It's a simple valve with standard o-rings so the repair was easy.
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