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Lower Rear Air Bags


Cotreker

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I would like to change my rear end air bag height by 2 inches.  Can I do so safely and easily?  My A/C trips over height sensor at a tunnel I70 but only going east bound.  Will my drive line still be within spec?

  • Volvo 670 / 2006
  • 10-Speed 
  • ATV's & Sleds
  • 2017 Host Mammoth Slide-In Camper on Deck
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Did you measure your height to be sure it's your truck and not the highway sensor?  I know, silly question, but it's the basics......

KW T-680, POPEMOBILE
Newmar X-Aire, VATICAN
Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row
Young enough to play in the dirt as a retired farmer.
contact me at rickeieio1@comcast.net

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45 minutes ago, Cotreker said:

I would like to change my rear end air bag height by 2 inches

You know as we get older we get shorter.  I'm sure in time you will get that 2" just naturally.  LOL

I just couldnt help myself.  Sorry.

Marcel

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2 hours ago, rickeieio said:

Did you measure your height to be sure it's your truck and not the highway sensor?  I know, silly question, but it's the basics......

It only trips going East and 50% of time it does not trip. Have measured at 13' 4".

  • Volvo 670 / 2006
  • 10-Speed 
  • ATV's & Sleds
  • 2017 Host Mammoth Slide-In Camper on Deck
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I have adjusted my rear level valve to the other holes in the lower bracket, with no ill effects.

I currently have the valve arm in the centermost hole.  Others on the forum, may opine that this will change the driveshaft angle to a point the carrier bearing will need to be adjusted.

I suspect a minor adjustment from hole to hole would likely keep the angles within spec, but I do not know this for sure.

Tire pressure may also lower the truck enough to bring your truck overall height a little as well.

My thought is a fully loaded 53 foot trailer would move the rear suspension up and down as much as moving the level arm one hole or so.  

 

2006 Volvo VNL 780, " Arvey"  Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift

2003 Jeep Wrangler Rubicon

2010 Forest River Coachman Freedom Express 280RLS

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1 hour ago, Cotreker said:

Never touched the leveling arm.  Is there one for each axle or only one?  Picture would be great or come by it is 60 today need this really bad the east bound guy knows me by name.

My 780 has only one for all the bags.....I know some earlier Volvos had more that one valve.  Here is a pic of the holes...sorry about the mud - dirt roads in the mountains...

Mark

ZfsHFLDl.jpg

2014 HDT Volvo 780 "Baby Bird"
2016 Smart Car "Baby Bird Turd" - on the back
2020 Momentum 376THS
We're both proud USAF Retirees...

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