Ignition Switch 1975 300D - Mercedes-Benz Forum

 
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post #1 of 7 (permalink) Old 04-20-2011, 09:26 AM Thread Starter
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Vehicle: 1975 Mercedes-Benz 300D
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Post Ignition Switch 1975 300D

Hey everyone, I'm currently in the process of a starter and ignition switch job on my 1975 300D and can't figure out for the life of me how the hell I'm supposed to remove the dash to get to the ignition switch, every bolt I can find has been removed. Is there an easier way to access the ignition switch so I can pull it and replace it (just the electrical bit with the spring)? Also, any ideas about how to make starter removal less of a pain in the ass would be super appreciated!

Thanks in advance for any help!
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post #2 of 7 (permalink) Old 04-20-2011, 10:35 AM
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Take out the instrument panel, than you can access the ignition switch and lock.
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post #3 of 7 (permalink) Old 04-20-2011, 10:48 AM Thread Starter
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Smile

Thanks, how exactly do I get the instrument panel out though?
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post #4 of 7 (permalink) Old 04-20-2011, 11:39 AM
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Pull

With best regards

Al

Check out the W114, W115 /8 enthusiast forum http://www.stroke8.org

My 280SL restoration
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post #5 of 7 (permalink) Old 04-20-2011, 01:57 PM
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or push from the back. You have to unscrew the speedometer cable and the oil line and unplug the electrics.

Don't forget to connect to oil line before starting!
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post #6 of 7 (permalink) Old 04-20-2011, 04:00 PM
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Remove steering wheel first. To do this, you pull the center off, and loosen the big nut holding the wheel . You need to have the ignition in the 'on' position, so the wheel is free to turn. You do NOT want to try to turn against the wheel lock. Trying to work against the steering wheel lock will break that, and that's expensive, aside from being a severe pain.

Get a piece of wood, and brace from one of the wheel spokes to the floor. Pad the end at the wheel spoke with a rag or some such. If it's never been off, it may require a bit of torqe to get it loose, but that's why you brace it.

Once the wheel is off, you have complete access to the cluster. If you can't wiggle the cluster out, there are some hook tools available that let you slide them in, turn, and pull.

While you're in there, change out your light bulbs and add an additional ground lead from a screw holding down the circuit board to a convenient bolt on the frame behind the cluster. Put a male/female connector in the lead for future re-entry.

Be very careful with the oil line. Whatever you do, DO NOT try to start the car with the cluster out. You will have a pressurized oil line pointed at your chest. This is not good.

Remember: It's not just a car. It's an Adventure.
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post #7 of 7 (permalink) Old 04-20-2011, 09:40 PM Thread Starter
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Talking

Hey guys, I was able to get the instrument cluster out just by loosening around the edges and pulling, didn't need to remove the steering wheel or anything like that. Good idea adding an extra ground, I just pulled apart the broken odometer assembly, cleaned it, regreased it, and reassembled it so it might possibly work now. With the cluster out I had perfect access to the ignition switch, now it's time to figure out what I'm going to do about that starter. Getting it out is going to be a pain from what I've heard.
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