Brian in Michigan wrote:
With mine, the "A" arms are grease-able. The greased side of them are subject to wear. I had that banging sound on mine. The truck shop had to replace 2 of the control arms. He said with my vintage they started to go bad at 10k miles and I had 40k on it at the time.
I've got 80k on mine. My control arms are greasable, too. I'll inspect them when I replace the springs. I contacted Super Steer and they told me I need to weigh it. Not sure where to do that except for a TA Travel Center about 30 miles out.
With regard to the bell cranks, the bushings are available separately. Do the whole things typically need replaced or do the bushings wear? Mine appear to be moving where the bushings are.