Intermittent grinding noise in right wheel well as breaks are applied. Doesn't seem to be affecting the left wheel well at this time. Also, after coming to a stop, there's a slight ''dragging'' sound also...
If the brakes appear to be working correctly in all other respects, then it's likely to be a noise caused by a wear ridge on the disc circumference. As the pads don't contact this part, it not only fails to wear down like the rest of the disc surface, but also rusts and as rust takes up more volume than steel the ridge actually grows larger.
To cure it, get the pads and discs checked to ensure that they're within specification (discs are a consumable item and typically need changing with every second or third set of pads). If they're well within acceptable limits then you can either grind off the wear ridge (on the inner and outer side of the disc) and also consider grinding a small chamfer onto the outer edge of the pads where they might contact the wear ridge. Ensure that you repeat the work on the opposite side of the car as well, and note that if just one pad or one disc is below limits then all front pads or both discs must be replaced. If the discs are replaced, the pads must be replaced unless they're near perfect and almost totally unworn. If the pad surfaces are uneven then they must either be refaced to be totally flat or discarded and replaced.
A common trick to grind down the disc wear ridge is to jack up the car at the corner you're working on, remove the wheel and to then firmly support the car with an axle stand (vital). Chock the rear wheels and apply the handbrake. Get in the car and start the engine, engage first gear. Because of the way that the differential works, the front wheel which is on the ground will lose all traction and remain immobile and the front hub on the opposite side will turn instead, but as it's in the air it won't move the car. You can then carefully use an old sharpened and heat hardened flat blade screwdriver, chisel or best of all a lathe cutting tool to slowly cut away the ridges. Once done, repeat on the other side. For safety, never attempt this unless there is someone else watching out for you. Also ensure that you have no loose hair, ,jewellery or clothing which can get caught on the wheel hub or the wheel studs.
May 21, 2010 |
2003 Ford Focus