Thread: semi trailer drivers - need some advice

Originally Posted by weeds

pretty sure i'm on the right track

I need to raise the suspension on a trailer, dual axle, without a prime mover.

am I right that I just need to connect air to the red line 'male fitting' to build air in the tanks

I than have to lower rear trailer legs, raise the axles and fit axle bracket to hold the axles wheels off the ground.......just to complete the picture

Assuming air suspension, the first part is right (note that (depending whether Euro or US valves fitted,) this may release the trailer brakes as well).
Lowering the landing legs to lift the rear axles will probably depend on the C of G of the trailer.

HTH

Originally Posted by donh54

Assuming air suspension, the first part is right (note that (depending whether Euro or US valves fitted,) this may release the trailer brakes as well).
Lowering the landing legs to lift the rear axles will probably depend on the C of G of the trailer.

HTH

cool thanks

yes will have wheel chocs and trailer is sitting on flat ground

the trailer has eight support legs, two in the normal position than an additional three down each side, all eight legs have load cells on them....we than transfer up to ~100T of product into it

both axles are fitted with axle lift, once I lift the axle I than have brackets to hold the axles up when the air leaks out


i'm guessing it will take a while with my arb compressor.....

Depending on the trailer and suspension, it could have a raise/lower hand valve near the air tank that will allow you to do this if the tank still has air in it. With our 2 trailers like this, one holds air for days, which is sweet, but the other drops its pressure in just a few hours - I've asked countless times for the Mechanics to find the air leak but they claim there isn't one - my experience with the 2 identical units tells me otherwise.

Yes, you ARB compressor is going to get a work out...

Originally Posted by Homestar

Depending on the trailer and suspension, it could have a raise/lower hand valve near the air tank that will allow you to do this if the tank still has air in it. With our 2 trailers like this, one holds air for days, which is sweet, but the other drops its pressure in just a few hours - I've asked countless times for the Mechanics to find the air leak but they claim there isn't one - my experience with the 2 identical units tells me otherwise.

Yes, you ARB compressor is going to get a work out...

We have two push pull valves.......sometimes the trailer can be parked up for six months, easier to put brackets in that way it doesn’t upset the Tare is it looses air.

Have the gooods