Date: Thu, 11 Aug 2005 01:42:23 +0100 From: "Charles C." <c.k.christacopoulos_removeme_nospamee.ac.uk> Subject: Re: uneven brake pad wear
Pooh Bear wrote: > mdb wrote: > > >>I have a 1997 9000 Aero and find that I have very uneven brake pad wear on >>the front end. The driver side pads were getting close to metal on metal >>while the passenger side still had good life left in them. I don't think the >>brake pressure equalizer device (not sure of the actual name, it's the 3"x3" >>device through which all brake lines pass before going off to the slave >>cylinders) is adjustable. Is it? What else should I be looking for? I >>replaced pads and rotors and noticed nothing out of the ordinary with the >>calipers. The pistons moved smoothly when I applied pressure to get the >>calipers free. Nothing seemed to be binding. Any suggestions about what >>might be going on? > > > Uneven pad wear can be caused by badly worn discs ( rotors ) or caliper problems > - such as a sticky piston. > > Since you've changed the discs, the calipers seem to be the next most likely > candidate. Maybe a worn wheel bearing could affect this too but that would be > readily identifiable. > > > >>While doing the brake job I also notice that the tires are wearing out on >>the inside edges much more quickly than across the rest of the tread. I >>think that means I have excessive toe-out, something that can be corrected >>with a good alignment. Agreed? > > > Yes, you need a wheel alignment. Not expensive. Wheel alignment can be knocked > out quite easily - for example by 'kerbing' the car. > > Graham > Bugger :-) There is a good thought you had (I was trying to figure this one out). If a wheel bearing is worn (but it would have to be *very* worn to go unnoticed), and that would be the drivers side bearing ... it would indeed make sense for the excessive wear of the pads AND it could explain the excessive toe-out of the wheels (the wheels increase their tow-out when the car is in motion). On the same basis it could be the drive shaft nut having worked loose. Probably just a sticking piston etc but the above do make sense. :-) Charles -- Please remove _removeme_ to reply. Work: http://www.somis.dundee.ac.uk/ Hobby: http://www.egothor.org/
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