1998 e300 Power Steering Pump

[Shrimpblue]

Hello everyone, it’s been a while since I last surfed this great forum or posted anything. My e300 has been running and driving flawlessly this past year since performing all the repairs and preventive maintenance on it. Which could not have been done without the help of the kind and sharing folks here.
I need to call on your help once again if you don’t mind, my power steering pump is whining and is slow to perform when idling. I’ve searched but can’t seem to find a rebuild kit or the right pump for it. Do you guys have any thoughts as to my options? Thanks