Hello To all

I am a proud owner of a Bmw e39 530 D i have spend a bit of cash on this car to get it up too where i want it..
385000 km on the clock runs like a dream , have just completed a full service ,new shocks on the front. have one problem with power steering fluid coming from the front
of the vehicle, i have replaced the pressure hoses coming from the cooler system and new resiviour cap,, have bought a new power steering cooler from BMW has anyone replaced this part before , it has the cuplinks connection ,,would be a huge help ,, do i need to take the RAD out? ,, would appreciate some feed back ,, new to this site,, cheers..