tried tapping on the cover, nothing happened....i took the cover off, and pulled the piston out just to check and make sure i put the bushing and seal in properly....everything looks just as it did when i pulled the original out, with the exception of the piston being in 5 or 6 pieces....

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1985 300SD 192,000miles...Astral silver/ Grey MbTex

1983 300D 194,000miles...White/Tan MbTex...my newest addiction