I'm not sure a new cylinder is usually required. I don't really see how they
go "bad". I'd bet many were replaced which were merely cruddy inside. A good
locksmith should be able to clean/refurbish a lock cylinder. Might have to
replace some of the springs, I often stretched 'em getting them out.
-Curt
On Monday, July 15, 2019, 5:11:01 PM EDT, Randy Bennell via Mercedes
<mercedes@okiebenz.com> wrote:
On 15/07/2019 3:45 PM, Clay Monroe via Mercedes wrote:
> I was able to get the key to do one last turn by flushing the lock with
> Tri-Flow and running the jiggly sander on the key for five to ten minutes
> over a four day period. It finally got one last good turn. At that point
> you want to remove the tumbler and make haste to your most trusted locksmith
> for them to try to clean and rebuild it. The original tumblers are NLA. I
> tried to order one for the 1974 R107. Dealer and Classic center were happy to
> take my money and then the whole thing got lost in the shuffle. The EPC
> shows the tumbler PN changes five times but does not state that there are no
> more to be had. Last supported tumblers are for the 1985 and newer cars,
> which are all the wrong size for our purpose.
>
>
> clay
>
>
>
So, if you cannot buy the correct parts, you have to improvise.
Disconnect the existing ignition setup but leave it in place so
everything looks pretty normal but install some form of aftermarket
ignition switch in an inconspicuous spot and carry on. If it is a
beater, no worries. If it is immaculate, try not to bodge it to the
point where it could not later be restored and hope that MB or someone
in China decides to start making the replacement parts you need.
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