|
|
Northeast ks | Just a quick question. What does a leveling valve exactly do on a trailer? Does it level it side-to-side or just control how high/low the bags are inflated. I have an air ride, spread-axle flatbed and if you don't get the hay bales loaded exactly even, the back of the trailer will lean to one side. Also, should there be only one leveling valve or two? Thanks. |
|
| |
|
Central Iowa | Our trucks and trailers have only one valve per unit. The valve keeps the bags at the correct ride height. If you have a trailer with two valves, I think one would run the front axle, and one for the rear. Not really sure why you are sagging on the right, but like you say, you want to balance the load a well as you can. |
|
| |
|
| broken cross member maybe |
|
| |
|
Columbia Basin, Ephrata, WA | If a trailer has two valves I don't think they'd be for the two axles. If they weren't set just right for each truck, the axles might not carry the load evenly and you could be overweight on one.
I used to have a truck with two ride height valves, for right and left. It was better than most air ride trucks at keeping an uneven load level.
|
|
| |
|
Interstate 35 North ia | Ive had a couple different spread axle flat bed trailers and they all had 2 leveling valves on one axle to keep the trailer level if it was loaded heavy on one side . the vans and hoppers only have 1 leveling valve . |
|
| |
|
Central Mo | I've got a lowboy that has 4 leveling valves, one for each bag. Remember, the air is going to to to the easiest bag. So if you have more hay on one side of the trailer it is giong to be low because the air will go to the easiest bag first. Might need to put on another leveling valve, not for front and rear axle but for left and right side. |
|
| |
|
| you are not loaded even on one side check the distance from the side it should be equal or the lower side has heavier bales on that side |
|
| |
|
| Most rigs only have one leveling valve; generally mounted in the center of the axle. It simply establishes a ride height. If you get loaded heavy to one side the truck/trailer will roll to that side. Even if you're loaded evenly you're still going to experience 'the motion of the ocean' dealing with ruts in the road or going hard into turns...
You can install a second leveling valve. Just make sure they're both located on the same axle and at the most outward point they can safely be mounted without risk of being torn off.... It doesn't perfectly correct your problem but it goes a long way. I just added a second one to my tandem this spring and it removed a lot of that rocking you get with a high sided load.
Rod |
|
| |
|
Wi | x2 on adding another to keep it level especially with tall loads like bales.
Our belt trailer has duel non-delay leveling valves. The center of gravity is high on it with the tall sides and such. Keeps it very solid and level but the non delay valves will suck a pile of air. Every corner, turn, bump, stop, etc they will be adding and dumping air. Most trucks have valves with a delay. |
|
| |
Semi leveling valve
