Mercedes-Benz 420SEL assistance needed to remove bottom water pump bolt after other bolts are removed on Mercedes-Benz 420SEL

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Mercedes-Benz 420SEL owners report experiencing difficulties when removing the bottom water pump bolt, particularly after the other bolts have been taken out. These challenges often stem from the need to locate a cutout on the dampener that accommodates a tool for accessing the bolt. Additionally, owners may need to rotate the crankshaft to a specific position to reach the bolt through the round gap in the dampener. Following these steps can help ensure successful removal of the bottom water pump bolt without further complications.

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