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Caliper slide grease
Posted 23 June 2008 - 01:16 PM
I don't wanna do it wrong and have slick pads and rotors, because I hear they don't work as well. Although they'd last longer.
Posted 23 June 2008 - 01:32 PM
Posted 23 June 2008 - 01:37 PM
I hear they don't work as well. Although they'd last longer.
Hmmm, interesting. Hadn't thought of it that way!
All I know is that it's a special "high-temperature" grease specifically for use in brakes. Got mine at NAPA--auto stores usually have it in small plastic squeeze tubes, enough for doing all 4 wheels if I remember correctly.
Posted 23 June 2008 - 01:56 PM
I like because it does not dry out, will not react with rubber like petroleum based greases, and is even compatible with brake fluid. Hence you can even use it to lubricate the caliper pistons when rebuilding your calipers.
Make sure to clean out all the old grease off your guide and lock pins as well as the bores into which they go. You don't need much at all, about 5-7 grams is more than enough per axle. When you remove the caliper pins, take note of the orientation of the lock pin (yellow with a runner ring around the tip) and guide pin (green) and reassemble them accordingly. If you get them mixed up, just remember that the brake hose will allow the caliper to pivot up around the guide pin.
I use a cheaper tub of petroleum based disc brake grease for the back of and contact surfaces of the pads. If your pads came with grease, you could use that here. Just a thin layer here is all you need. If you're reusing the old brake hardware, clean off the old grease and corrosion with a little wire brush.
And, of course, avoid getting grease on the rotors and friction side of the brake pads.
I replaced the pads & rotors and rebuilt the calipers on my '99 forester at 131K. Depending on the mileage of and how long you plan to keep your car, I would rebuild the calipers. There's no sense in having a stuck caliper piston ruin a new set of pads and rotors. Complete caliper rebuild kits by Beck/Arnley are available from rockauto.
Posted 23 June 2008 - 03:29 PM
i recommend springing for the bottle, it's annoying buying the packs every time you think you might need them. those little packs don't go very far and the bottles are cheap and come with an applicator under the lid (at least the ones i've bought - permatex brand from memory??).
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