So, first impressions trying to replace the lower ball joints of the LS using the Harbor Freight "Maddox" ball joint press kit. Here again is the contents list for reference:
The #4 receiving cup does indeed fit perfectly over the "back" of the ball joint for removal purposes. However, because it is merely a cylinder, you need to use the #6 adapter between the back of the C-clamp and the #4 receiving cup. And since the #6 adapter has a larger diameter than the #4 receiving cup, the knuckle doesn't leave enough clearance for the #6 adapter to sit perfectly center on the #4 receiving cup. That said, I have figured out that I can get it to sit flush against the receiving cup, though slightly off-center. I think that should probably be OK for
removal purposes, although for installing the new ball joint, you definitely want the driving force to be dead center.
Ideally, you would want to receiving cup that has the same dimensions as the #4 cup in the Maddox kit, but that also has the raised mating surface to use the with C-clamp without an adapter. In other words, something like the #9 cup pictured above but with the diameter of the #4 cup.
I am considering purchasing
this 14-piece adapter kit from Orion, which looks like it's the same set as the now-discontinued Pittsburgh Automotive set that Harbor Freight used to sell. Here's the contents list for it:
According to this, the #11 receiving cup has an inner diameter of 2.25" just like the Maddox #4, but as shown in the picture, it's got the raised mating surface to use with the C-clamp without an adapter. It's also 1/4" shorter, which leads me to the next issue I ran into.
Although I think it's possible to remove the ball joints with just the Maddox kit if you line everything up just right, I've concluded that it's not possible to do it without cutting the stud off the ball joint because the various adapters you have to use end up being too long to fit in the C-clamp. I tried pressing against the end of the stud but it became clear that things would not stay lined up doing it this way. If you cut the stud off as shown in the video on the previous page, you can press against the joint with much less risk of things going out of alignment. I haven't tried this yet though because I need to get some cut-off wheels for my angle grinder to actually cut the stud off.
For installation, it looks like it
should be possible to install the new ball joints with just the Maddox kit, assuming you put the "back" of the C-clamp directly against the back of the new ball joint. You can then stack the tubes as needed to press in the new ball joint. I haven't gotten to this stage yet though so I'm sure
something will come up to complicate things (something always does!).
I will say though that the Maddox ball joint kit has been very helpful for replacing control arm bushings! It was actually quite easy to press out old rear-lower bushings and press in the new Powerflex ones, except of course for the bushing with the metal sleeve that you have to cut out!
I'll try to update once I make another attempt.