Originally Posted by Mark DiSilvestro

Tricky part of late '60s - early 70s Mercedes VDO clocks is getting the case apart. Unlike older VDO clocks, which had a removeable rear plastic cover, the 114-115 VDO clock movement (or at least the one I repaired from a '70 250C) is trapped inside a metal can, with the front chrome bezel crimped over the rim to seal it in place. One needs to carefully pry the chrome bezel from its grip on the can with a thin tool, trying not to badly crack or distort the chrome. Then, after the clock is repaired AND tested, the bezel can be worked back into place and re-crimped to the can, with a round tool such as a screwdriver handle or plastic mallet head. Hopefully, any slight re-crimping flaws won't be visible when the clock is reinstalled in the instrument cluster.

By the way, if you have an extra one of these VDO clocks that works, and no extra Mercedes to stick it in, you can set it on a bookshelf and power it off a 9 volt alkaline transistor radio battery.

Happy Motoring, Mark