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post #2 of (permalink) Old 31st August 2009
Technical Supremo

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It's not unusual for brake pads to become seized in their housings as they are prone to corrosion considering they tend to get doused with cold water when hot - ideal conditions for such. Also poor fitting can be another reason. New brake pads should be easily inserted with the fingers - no tapping or encouragement should be necessary - also coating the edges of the pads with a special grease reduces the risk of further corrosion. Copper grease is no longer recommended due to the potential risk of damage to rubber piston seals and dust covers. Always ensure the caliper piston surface is clean plus any heavy corrosion is removed from the brake pad carrier prior to assembly. Removing the slider pins for a really good clean also helps.

If the vehicle has ABS it is also recommended to open the bleeder and removing the brake master cylinder cap when retracting the pistons. Many ABS controllers just don't like fluid forced through them in the wrong direction.
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