Yep, old thread revival once again. If you step on the brakes and hear a metallic clunk or ping, its could be the pads moving around on the rotor and shifting around inside the caliper body. I had this problem when I replaced my rotors and suspected these retainers, replaced them properly and no more noise when applying the brakes. The PO had the anti-rattle spring installed backwards. I had to look at a few pics of the FJ60 brakes to make sure I did it correctly as the service manual is very vague on this. Putting them in backwards causes the rattle spring to contact the actual rotor which eventually wears the spring so thin it breaks.
The smaller pad retaining spring is a MUST HAVE as it keeps the pins from working their way out which possibly would cause the pads to slip out of the caliper all-together. The other larger anti-rattle spring is what actually lock the pads in place so they aren't swimming around in the caliper and making noise when they contact the caliper retaining pins under braking.
I have seen them with 2 rattle springs per rotor and also just a single anti rattle spring per rotor. Works both ways.
This is one of the easiest to service vehicles ever, right after the Ford model T. I swear they engineered it to be worked on by the average bloke.
