[jdkskyking]

Yes, you will need a new accumulator. 
Be careful backing up if the tag doesn’t function you could be in a position that you’ll need to maneuver to straighten out the tags if they turn in the wrong direction. 

I was recently told by Newell parts department that the ZF accumulator is not available. Newell is using a replacement accumulator.
 
If you contact Newell they can explain how they have been installing the new style accumulator. 

You may also inquire if the unit used to bleed and pressurize the system can be shipped to your location. If that is possible you could circulate fluid throughout the system to re-bleed and then set the hydraulic pressure. 

I had my tag system set the ZF recommended values:
Nitrogen 10 bar 
Hydraulic 15 bar. 

Is your original accumulator not installed with port up?

Others have replaced their accumulators and set the pressure themselves. You’ll need to put together a manual hydraulic pump system.