GlennWest Posted December 2, 2015 Report Share Posted December 2, 2015 The Centry I'm getting has pull cables outside above fuel tanks to dump rear air. Any way to add a means inside of cab or at least single source. Little disappointed when I saw this. 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
noteven Posted December 2, 2015 Report Share Posted December 2, 2015 Hi Glenn, Call your local Freightliner dealer with your VIN at hand and ask the parts department to quote you what you need to plumb a dump valve into the dash. "Are we there yet?" asked no motorcycle rider, ever. Link to comment Share on other sites More sharing options...
rickeieio Posted December 2, 2015 Report Share Posted December 2, 2015 Really? Even my cheap old Mack has a switch on the dash to dump the suspension. A toggle switch and a solenoid valve are all you need. Oh, and a light to remind you to air it back up.......... 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 rickeieio@yahoo.com Link to comment Share on other sites More sharing options...
Big5er Posted December 2, 2015 Report Share Posted December 2, 2015 I have pull cables to drain the air tanks, but to dump the suspension it has a switch on the dash. MY PEOPLE SKILLS ARE JUST FINE.~It's my tolerance to idiots that needs work.~ 2005 Volvo 780 VED12 465hp / Freedomline transmission singled mid position / Bed by Larry Herrin2018 customed Mobile Suites 40KSSB3 2014 smart Fortwo Link to comment Share on other sites More sharing options...
GlennWest Posted December 2, 2015 Author Report Share Posted December 2, 2015 Maybe I should look a little closer 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
Bigtrailer Posted December 2, 2015 Report Share Posted December 2, 2015 That can't be Glenn, those are for your air tanks to drain the water out of them. You should have a switch that says "suspension", right above the sliding 5th wheel switch on the right side of the dash. Also, below that will be your differential lockout, use it to lock in all 4 drive wheels if you get stuck, or in soft areas, or, climbing over a high approach into a driveway if the axle lifts up and starts spinning. Bill Link to comment Share on other sites More sharing options...
GlennWest Posted December 2, 2015 Author Report Share Posted December 2, 2015 Well I didn't know what I was looking at. I looked for it. Probably won't labeled and looked right over it. 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
GlennWest Posted December 2, 2015 Author Report Share Posted December 2, 2015 It does have diff lock. Sorta shame to discard 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
Star Dreamer Posted December 2, 2015 Report Share Posted December 2, 2015 On our Freightliner our rear suspension switch on the dash allows you to lower the rear suspension by holding the switch to one side but as soon as you take your finger off it it starts airing back up. This is so you do not accindently drive with the suspension in the lowered position which will tear up joints. I am not at home this week but if you need a picture of what the switch looks like Glenn just let me know and I will get one this weekend and post it. Dave 2005 Freightliner Century S/T, Singled, Air ride ET Jr. hitch 2019 46'+ Dune Sport Man Cave custom 5th wheel toy hauler Owner of the 1978 Custom Van "Star Dreamer" which might be seen at a local car show near you! Check out http://www.hhrvresource.com/ for much more info on HDT's. Link to comment Share on other sites More sharing options...
GlennWest Posted December 2, 2015 Author Report Share Posted December 2, 2015 You sure up early. I on night shift and thank you 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
rdickinson Posted December 2, 2015 Report Share Posted December 2, 2015 If I start to drive off with suspension dumped, an alarm sounds and a red triangle appears in dash cluster saying "stop the truck" or something like that. Link to comment Share on other sites More sharing options...
peety3 Posted December 2, 2015 Report Share Posted December 2, 2015 The Centry I'm getting has pull cables outside above fuel tanks to dump rear air. Any way to add a means inside of cab or at least single source. Little disappointed when I saw this. If your truck truly doesn't have this, the process is simple: add a switch on the dash (or reuse an existing switch), run a wire back to the axle, and do a little air plumbing. Find a spot on the hose from the air leveling valve to the air bags, and before the T that splits out to the two air bags. You're going to add another T, and two electrically-operated air valves. One valve needs to be Normally Open ("NO"), and the other needs to be Normally Closed ("NC"). You want the air from the leveling valve to flow through the NO valve, through the new T, and on to the existing T that splits out to the two air bags. On the remaining hole of the new T, add the NC valve. Sending 12V to the valves causes the leveling valve to simply feed a dead-end (courtesy of the NO valve closing), and causes the air bags to bleed out (courtesy of the NC valve opening).. Imagine the existing system like this: [leveling valve] ----------------------------------- T ====== [air bags] The new system like this: [leveling valve]-----[NO valve]---T------------- T =======[air bags] | L -------[NC valve]---(a breather cap would probably be wise) It does have diff lock. Sorta shame to discard Why are you discarding it anyway? Was it only on the power-divider axle? Link to comment Share on other sites More sharing options...
GlennWest Posted December 2, 2015 Author Report Share Posted December 2, 2015 Likely showing my ignorance here. I was under the impression you lost this when singling. 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
NoDirectionHome Posted December 3, 2015 Report Share Posted December 3, 2015 No you mostly have it correct Glenn, but like most people you are referring to the inter-axle lock (which is a differential) as a differential lock which locks the wheels side to side. "There are No Experts, Do the Math!" 2014 Freightliner Cascadia DD16 600hp 1850ft-lb 18spd 3.31 260"wb SpaceCraft S-470 SKP #131740 Link to comment Share on other sites More sharing options...
Alie&Jim's Carrilite Posted December 3, 2015 Report Share Posted December 3, 2015 Some tandem axle trucks have a "Lock" that makes both rear axles live. My truck for instance in its original tandem form had the ability to lock both rear axles together as well as locking the differentials. On my Volvo, the rear axle acts like an old GM limited slip. Flip the switch and the diff locks and its a GM posi trac. In my case though, it can react violently when one set of tires catches solid traction and launches you forward. Jim's Adventures Old Spacecraft.... Who knows whats next Link to comment Share on other sites More sharing options...
peety3 Posted December 3, 2015 Report Share Posted December 3, 2015 Likely showing my ignorance here. I was under the impression you lost this when singling. In typical jargon, "differential" refers to the assortment of gears within each axle that allows the left and right shafts within that axle assembly to turn at different speeds, allowing the vehicle to make turns on dry pavement without snapping shafts or requiring wheel slippage, and accounts for minor differences between the tires on either side of that particular axle. "Power divider" refers to the assortment of gears within the forward-most axle of a tandem (or two axles in the case of a tridem setup) that allows the two axles to turn at independent speeds. This allows for tire differences between the forward driven axle and rear driven axle, and also accounts for differences in turning circle. The power divider is admittedly a differential in concept, but folks seem to be rather consistent in referring to it as a power divider, or perhaps "inter-axle differential". Link to comment Share on other sites More sharing options...
rickeieio Posted December 3, 2015 Report Share Posted December 3, 2015 In typical jargon, "differential" refers to the assortment of gears within each axle that allows the left and right shafts within that axle assembly to turn at different speeds, allowing the vehicle to make turns on dry pavement without snapping shafts or requiring wheel slippage, and accounts for minor differences between the tires on either side of that particular axle. "Power divider" refers to the assortment of gears within the forward-most axle of a tandem (or two axles in the case of a tridem setup) that allows the two axles to turn at independent speeds. This allows for tire differences between the forward driven axle and rear driven axle, and also accounts for differences in turning circle. The power divider is admittedly a differential in concept, but folks seem to be rather consistent in referring to it as a power divider, or perhaps "inter-axle differential". Excellent description. Even I can understand it. 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 rickeieio@yahoo.com Link to comment Share on other sites More sharing options...
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