I had that,scared the out of me.One rear whell would get hot.Turned out 25 years of gunk on brake parts.Cleaned pins,sliding areas for pads,Worked pistons in and out with wd.Reassembled,that was 2 years ago.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt