Originally Posted By: The Critic
Quite a few things are missing from that article actually.
1. You must, and I repeat, you must check the thickness of the rotor using a micrometer. If the rotor is below minimum thickness, it cannot be placed back into service legally! If you do not own a micrometer, bring the rotors to a shop that resurfaces rotors, they'd be glad to measure it for you.
2. Resurface or replace the rotors. If the rotors are above the minimum thickness and there's enough material left to resurface, I'd consider resurfacing. While it isn't 100% necessary, I've found that it reduces the likeliness of a noise related problem if you are not using the identical pad that is already on there.
3. If you decide to resurface the old rotor, index the rotor to the hub. In other words, mark a wheel stud, and mark the corresponding position on the rotor. This is necessary because rotors are often mounted a certain way to minimize rotor runout.
4. You don't mention what type of vehicle you have, but based on your previous posts, I'm assuming that this is going to be on your ES300? If so, Toyota uses a two piece shim design. They use an inner anti-squeal shim and an outer one.
If you decide to use Toyota OE pads, you will need reuse these shims. They do not come with a new pad kit.
If you have aftermarket pads on there right now, it's likely that the last installer has tossed these. If you decide to go with Toyota OE pads, you will need to buy a new shim kit.
Important: if you use an aftermarket pad, you do NOT need to use these shims again.
5. As the article states, use synthetic caliper grease only. Do not use any disc brake quiet type compound. Those are a disaster for shimmed pads, especially the two piece OE shims. Some pads do not need any grease between the pad shim and the caliper. For example, the Centric pads use teflon coated shims that can be installed dry, and Wagner ThermoQuiet and Wagner EDGE pads are to be installed dry as well.
6. Remove the pad support plates (that's what Toyota calls them, also known as pad abutment clips) from the caliper and give the caliper a good cleaning with a brush. Also give the clips a good scrub. Lubricate both sides of the clip with the caliper grease before/after reinstalling. This website describes it fairly well:
http://www.morseauto.com/brakejob.html (click on bracket preparation)
7. Burnish the pads. Do thirty moderate stops from 30 mph with about a 30 second cool down in between.
Hope this helps, and good luck!
Or, if you take my suggestion, change them (the pads)preemptively before you ever need to do 90% of that stuff. Save hours and hundreds of $$$ over your ownership. If you have ABS ..do an occasional brake fluid exchange just in case.