No. You can just push the pistons back in using a screwdriver as a lever.

Now you can help me: Help needed from somebody with a 300SD

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine