Basically its a good time to evaluate all the components of the front end. Consider which ones you'll be removing/disconnecting in order to remove the steering rack and then decide whether or not they need attention too. Be aware, this add significantly to the time required to complete the job.
IF the hoses and seals on your Oil Cooler (the oil filter screws onto this) are leaking or simply old, this is an item you might want to service AND removing it makes it possible to extract the steering rack without having to loosen the drivers side motor mount and jack up the engine.
In my case....I had plenty of time to work on the vehicle so elected to just refresh the entire front end. I replaced some items that were still serviceable but since I intend to keep the vehicle until I croak, I just went ahead and replaced/reconditioned all the bushings, bearings, brakes, etc....
I'm not advocating everyone do this, since its quite a job. Its just something I chose to do. But the point of it is this: The removal of the steering rack has you down there (front end) anyway so its a good time to clean things up and inspect.
If you are thorough...odds are you'll find other items in need of attention. For me, not a big deal. I'm retired and have the time to do it. I also have other vehicles to drive, but that will not be the case for everyone.....so choose which items you want/need to work on and do those.
Have my Steering Rack ordered (99 LX470) and some Whiteline Bushings. I am going to replace the lines to the P/S pump also...so I have ordered the copper gaskets for the lines. Is there anything else I will need, or other 'while you are in there' items? Don't want to have it all pulled apart...
forum.ih8mud.com
As you can see below, you can get pretty deep into it if do the whole front end.
View attachment 2567618