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ABS Brake Pad Replacement - What did I do? 900

posted by  someone claiming to be rwreagan on  Tue Feb 18 03:20 CST 2003 [RELATED]

I just replaced the rear pads on the '94 960. Everything seems fine, but I'm wondering about something in some recent posts:

Someone described the procedure for retracting the piston in the calipers when replacing the pad, and suggested opening the bleed screw while simultaneously pinching the brake supply hose to ensure that no fluid gets forced back toward the master cylinder. I'm wondering what is different about ABS brakes so that you wouldn't want to allow fluid to be forced back into the master cylinder.

In my case, I opened the bleed screw and retracted the piston (without pinching the brake hose). Some fluid came out the tube I had attached to the bleed screw nipple, but I'm sure some of the fluid went back up the brake hose, too. Did I potentially cause any damage to the ABS hardware with this procedure? I'm not getting any codes or warning lights, so maybe everything's OK.

Thanks for any input.

R. W. Reagan






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