Not 100% sure this is the best place to post this .... but at the weekend I had to take one lower arms off again as the outer balljoint boot had split!!!
OK, the job's a pig, but I learnt a couple of things that I didn't last year when I replaced both.
1) Undo the drop links on BOTH sides ... otherwise the anti-roll bar gets in the way when you want to pull the arm out. It catches on the rear mounting. I can't remember doing this last time ... but it makes a difference.
2) I removed the brake caliper and disc this time. It meant it was a bit easier to get at the lower ball joint as it's visible from both sides, plus the suspension strut is a bit lighter to man-handle.
Possibly because the a/r bar was interfering, the arm definitely wasn't so easy to remove. Last time I undid the mountings, pulled it away from the subframe and twisted it towards the front of the car. Then by pushing it down it was relatively easy to level the balljoint out of the hub unit (after splitting it). This time ... it didn't want to know. I ended up jacking up the outer end of the arm and gently levering it away from the hub as much as possible. I also turned the steering hard to the right so I could get as much access as possible. What I was concerned about were the threads on the balljoint. Knacker them and the arm's a dud. Whether luck or judgment, it came out. I could then pull the arm out of the subframe. Something tells me I should have gone around the other side and taken off the droplink then .... but ....
When I changed the arms last year they took around 4 hours to do both. It took 4 to do one this time
Now about 10 minutes of that was taking the brake caliper and disc off, 20 minutes fighting with a couple of circlips that hold the boot on and another 20 minutes getting my grease gun to work!!! I filled the boot with grease before putting the smaller clip on.
So you can learn something new every day!! And I'm hoping this will be the last time that I have to take the suspension arms off.