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Open Roads Forum  >  Fifth-Wheels

 > Auto leveling airbag system??? How important is this?

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Super_Dave

Harrisville, UT

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Posted: 12/03/19 09:20am Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

PacBrake bags required 5psi empty. Did not notice and difference. Personally never heard of 10 psi min.

I've always wondered what one condition or 1/2 ton truck the minimum air pressure was written for. My dually has overload springs and I've driven many times with the airbag valve stems removed with no damage to my bags. So, I've always assumed that the minimum air pressure was written for a weak or overloaded condition on specific class of trucks.


Truck: 2006 Dodge 3500 Dually
Rig: 2018 Big Country 3155 RLK
Boat: 2003 Jetcraft 2125 - Yamaha 150 HP & 8 HP Kicker


jshupe

Austin, TX

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Posted: 12/03/19 09:57am Link  |  Quote  |  Print  |  Notify Moderator

I purposely chose not to get the factory auto-level, and don't think you can go wrong with that truck.

My previous truck had the Kelderman 4-link. The factory auto-level doesn't compare to that system so I wasn't interested. Most aftermarket suspension components say that they are not compatible with the factory air ride. I didn't want to limit myself to the factory options, and if for some reason I want air in the future, I'll go back to Kelderman for their more robust 4-link system. I've been pleasantly surprised with the progressive leafs so far.


2019 RAM 3500 Longhorn HO/AISIN 4x4 CCLB DRW | 2015 Keystone Alpine 3730FB
Random musings (blog): https://www.lifeenroute.com

cummins2014

Utah

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Posted: 12/03/19 10:17am Link  |  Quote  |  Print  |  Notify Moderator

Super_Dave wrote:

Cummins12V98 wrote:

PacBrake bags required 5psi empty. Did not notice and difference. Personally never heard of 10 psi min.

I've always wondered what one condition or 1/2 ton truck the minimum air pressure was written for. My dually has overload springs and I've driven many times with the airbag valve stems removed with no damage to my bags. So, I've always assumed that the minimum air pressure was written for a weak or overloaded condition on specific class of trucks.



I am under the impression that the minimum is for bottoming out, and not damaging the airbag. I have to guess the OE air ride Rams have air in them all the time, and automatically adjust to weight.

My aftermarket Airlift air bags have a bump stop in them ,and supposedly can be run empty. I don't, I run 5 psi when not towing my fifth wheel .

DesertDogs

Scottsdale

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Posted: 12/03/19 11:35am Link  |  Quote  |  Print  |  Notify Moderator

I recently test-drove two 3500 duallies, one without the auto leveling air suspension system, and one with.

Though the roads driven were different, between the two test drives, it did seem to me that the one with the air suspension did ride a little bit more softly.

Rather than have to, potentially, get involved with adding on aftermarket air systems, I've decided to go with the factory air suspension system.


Considering Solitude 310GK 5th wheel

Cummins12V98

on the road

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Posted: 12/04/19 09:21am Link  |  Quote  |  Print  |  Notify Moderator

DesertDogs wrote:

I recently test-drove two 3500 duallies, one without the auto leveling air suspension system, and one with.

Though the roads driven were different, between the two test drives, it did seem to me that the one with the air suspension did ride a little bit more softly.

Rather than have to, potentially, get involved with adding on aftermarket air systems, I've decided to go with the factory air suspension system.


Good call, you will be more than impressed!!! Run 35psi unloaded and what your load dictates when towing. Leave it in aLT Ride Mode ALL the time. Lower entry/exit, great ride and no messing around later with bags or?????


2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"

"HeavyWeight" B&W RVK3600

2016 MobileSuites 39TKSB3 highly "Elited" In the stable

2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD

DesertDogs

Scottsdale

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Posted: 12/04/19 10:08am Link  |  Quote  |  Print  |  Notify Moderator

Thanks to all who provided assistance here. I know now exactly what I want and need in terms of the truck. Of course that means I will be getting a the most feature-laden vehicle that RAM makes, but life is short and it's good to treat yourself!

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