Yes, it can be serviced without removing the primary. On assembly, it's a hassle to hold the inside end cap in place, while you thread the rod into it, but not too bad. If you don't have that type, I would switch to it and thus use the longer bushings too. I would also recommend soaking your new bushings in oil at least a day or two. (I have some soaking right now) I've read the bronze bushings work even better then. Cheers.