Starter Pull/Ignition Connect Cable - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 08-18-2012, 06:11 PM Thread Starter
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Date registered: Jul 2012
Vehicle: 1976 240D 115 Pumpkin Orange 700,000+ miles and rising!
Location: Memphis, TN
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Starter Pull/Ignition Connect Cable

Today I was cleaning the class in my instrument cluster and replacing some blown bulbs and had to put the cluster in and out a few times. On the last time I noticed a cable not connected to the ignition. I attached it and put the cluster back in - tested everything and went to turn off the car/take the key out and the key was locked. Removed the cluster removed the cable and the key comes out fine.

Ok so I dont think this was ever connected because the opposite end of it was already severed off. My question is - what is this. I know it looks like a pulley system for locking the key in but when should it be active/not active and what actually controls it/what does the severed end connect to? What is this cable called so if I decide to replace it I can. Is there anything bad about not having it connected?
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1976 240D 115 Pumpkin Orange 700,000+ miles and rising!
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post #2 of 2 (permalink) Old 08-20-2012, 02:43 AM
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Date registered: Oct 2009
Vehicle: 2000 VW Golf Variant
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On an original 1976-W115-240D the engine was started and stopped with a pull/push knob. The starting procedure called for keeping the knob in the glow position for 0 to 60 seconds depending on engine temperature and then pulling the knob even further into the starting position. The cable would pull the diesel pump into the start position and the starter engine would be engaged. After starting the knob should be released into the driving position. If you wanted to stop the engine, you had to push the knob. The cable would push the diesel pump into the stop position, stopping the engine.

There was a little cable running from the start/stop knob to the ignition lock, so that you could not remove/turn the key if the knob was not in the stop position. A safety feature, so that you would not have a running engine with a locked steering wheel.

Here you can see the original setup:

You can find movies of the starting procedure on Youtube.

Apparantly your car has been modified to be a key starter, probably hasn't got the original engine in it.
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