I don't think your problem can be the lock. The wafers retract or they don't.
When they retract they either move enough to turn the lock or they don't,
theres no way for the lock to open partially. I think your lock cylinder is
working correctly and something beyond it is binding up...
-Curt
On Monday, July 15, 2019, 1:13:58 PM EDT, David Bruckmann via Mercedes
<mercedes@okiebenz.com> wrote:
Thanks Curley, good suggestions. I'm not above using a screwdriver, at least
not until the replacement cylinder arrives.
One thing that worries me is that it turns _a little_, like maybe 45 degrees.
It clearly passes into different territory within the range of the ignition
switch itself, because there's a point at which the door buzzer begins to
sound, etc.
When the key stops turning, it STOPS. No ifs ands or buts. But alas it does not
reach the ACC position. Is this still the lock cylinder itself, or do I have a
problem with the steering lock mechanism behind the cylinder, I wonder? It
almost feels like the mechanism that prevents you from activating the starter
twice without turning the key to off first.
I have attached a video to this posting...
D.
At 10:28 AM -0500 7/15/19, Curley McLain wrote:
>David,
>
>multiple tries, and the sander are the only ways I know if to get it to turn.
>Once you get the cylinder out, I have a couple suggestions.
>
>1. you can stick a big screwdriver in the hole where the cylinder was and
>turn the switch. That way you can drive as needed.
>
>2. You can remove the clip on the side of the cylinder (if it has one) and
>dump out the wafers or pins. With all the wafers or pins out, you can put the
>cylinder back in the switch and drive with the key until your new cyl.
>arrives, or as long as you want, if you are not concerned about theft. It is
>the pins or wafers that bind the cyl. Once they are removed, you can operate
>the car normally, sans lock. I found this to be quite satisfactory for a
>240D, which nobody in their right mind would steal. I can start the car with
>only a screwdriver in the slot if I forgot my key. (so long as the doors are
>not locked, as in moving it around on the vast estate...)
>
>David Bruckmann via Mercedes wrote on 7/14/19 10:44 PM:
>> The key will no longer turn much past the first detent on my 1979 300SD
>> W116. Alas, this situation arose without warning near the end of a long day
>> trip.
>>
>> Fortunately the steering is unlocked if the key will turn at all, so I
>> managed to get the car started by disconnecting the vacuum shutoff line and
>> applying voltage to the starter solenoid connector on the side rail. This
>> allowed me to drive the 1.5h trip home without waiting 10.5h for the AAA to
>> show up!
>>
>> Speaking of 10.5h, I assume I will have to have at it with a palm sander or
>> something similar to attempt to nudge the key/lock assembly into submission.
>> Any tips on what might work would be greatly appreciated!! I will order the
>> new cylinder tomorrow morning!
>>
>> Thanks,
>>
>> D.
>>
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