Hello,everyone, 

I drained the hydraulic oil from my Schwing 305  changed the hydraulic filter and refilled the tank but now the S tube slewing rams wont work but the main piston cups and agitator are working just not the slewing rams.

Is there a way to bleed the air from the system or have i done something wrong,

Any help would be greatly appreciated

maybe loosen the hydraulic lines on the outside of those slew Rams. With the engine off there should be enough pressure on the system with just a full tank of oil to push the air out retighten the lines once you get oil

Thanks very much for the fast reply,

Got it sorted in the end, very surprised with the amount of air that got into the system,

Thanks again, much appreciated