1- When to replace brake pads? Most vehicles have a wear indicator; just notice and follow the alarm on the dashboard, or manually checking the brake pads lining remainder. Please change it in time, when the brake pads linings have 2-2.5mm left. Under generate condition, checking per 5000KM, by thickness, wear ratio on axle unit, and brake system response. Before installing, please make a general inspection for your brake system. Does brake kits all right in working? Any oil stains? Do components (retainers, indicators & pins) connect well? 2- Examine the disk brakes, / front brake pads & rear brake pads; change a new disc if single-side abraded thickness reach or over 1mm. And you’d better facing the disc if it still workable but it was serious scored, or obtain crumpling, folding & shrinking in the surface. And move up and down on the surface must within 0.08mm. 3- Try abutting the brake pads & discs, checking the working surfaces well fit each other or not. If not, please make a proper chamfer accordingly. Or else, it will generate brake noise, what worse, resulting brake failure. 4- Testing impermeability of the calipers’ pistons, make sure no fluid leak. Change new O-rings and dust guard will be necessary. By the way, brake pads & disc brakes can be washed with petrol, but don't loading them unless air dried. 5- Disassembly / installation for particular vehicles must be done under the direction of relevant maintenance handbooks orderly. 6- Testing the performance brakes by press the brake pedal gently, consequently, aggressively and suddenly. More information for Toyota brake pads, GM brake pads,brake linings factory, please kindly view: http://landforscher.com
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