Air suspension (Commercial) help

[snowcat]

I'm currently building a hook lift trailer and have donor some Hendrickson running gear on bellows..

Any idea what this valve is, I'm assuming this is some sort of pressure reg for the bellows via the load sensing valve?

This is the only picture I have of it in situ as a raided the control gear and drooped the axles where they stood, the ABS is going and it will be just a duel line manual load censored circit....

However I haven't a clue on what this item did/does...... anyone help ???

 

[CKJDJK]

I belive its a multi function control valve for the air bags. It sets the ride height by adjusting the pressure to the bags then sends a signal to the brake relay valves limiting the brake pressure according to the load on the axle to prevent brake lockup. There is probably a small ride height valve between the axle to the chassis as well plumbed into the suuply to your valve.
See if you can get a copy of the TTC catalogue from comercial motor factors or a copy of the Wabco catalogue. Should help you identify it further

 

[snowcat]

thanks for that, iv got a TTC catalogue and managed to find it as a Duel circuit, pneumatic control valve, I should hopefully find some recommended schematics from the OEM on the net.....