I have a 1997 E320 with 142k. I have developed a creaking noise in the front passenger suspension. I have narrowed at least one cause being the upper control arm bushing that connects to the steering knuckle. In reviewing the procedures in WIS and looking for parts, it seems like I will have to replace the entire upper control arm. Is this correct? Also, the WIS procedure calls for a puller 124589033300 and a thrust piece 210589046300 to remove and install this piece. Are their any alternative tools that will work for this job?

I also want to inspect the lower ball joints and bushings. Besides visually inspecting for cracks in the bushings and boots, are there any other tests that I can do.