WARNING: Before proceeding, disconnect the negative terminal of your car battery. This prevents accidental airbag deployment (though your 1984 model likely doesn't have an airbag, it's still a critical safety precaution for any vehicle).
Steps to Remove the Steering Wheel:
1. Locate the Bolt: You've already found what seems to be the Allen or hex bolt. It's usually located behind a small plastic cover (sometimes black or grey) in the center of the steering wheel. Carefully pry this cover off – a flat plastic pry tool is best to avoid scratching the surrounding area.
2. Determine the Bolt Size: Make absolutely sure you have the correct size Allen or hex key. Using the wrong size can strip the bolt head.
3. Remove the Bolt: Slowly and carefully unscrew the bolt using the correct tool. Do not force it. If it's very tight, use a penetrating oil (like PB Blaster) to help loosen it. Allow the oil to penetrate for at least 15-20 minutes before trying again.
4. Remove the Steering Wheel: Once the bolt is out, the steering wheel should come off. However, it might be stiff. You might need to gently rock or pull the wheel off. Sometimes a steering wheel puller is necessary, but often it's just stubborn. Keep a firm but controlled grip.
5. Mark Alignment: Before removing the wheel completely, note the position of the wheel relative to the steering column. Make a mark on both the column and the wheel to ensure proper realignment during reinstallation. Misalignment can affect your steering and potentially damage your car's components.
Important Considerations:
* Steering Wheel Lock: Ensure the steering wheel is not locked. Try gently turning the steering wheel back and forth to ensure it's free.
* Airbag (Even Though Unlikely): Even without an airbag, always disconnect the battery's negative terminal as a precaution. Working on the steering system can cause electrical shorts that could damage the car's electrical system.
* Torque Spec: When reinstalling, remember to tighten the bolt to the manufacturer's specified torque. Look up the correct torque specification in a Mercedes-Benz repair manual for your specific model year. Over-tightening can damage the bolt or steering column.
* Professional Help: If you are uncomfortable performing this task, it's always best to seek professional help from a qualified mechanic. Improper removal or reinstallation can lead to steering problems and safety hazards.
Remember, working on your car's steering system can be risky. Take your time, use the correct tools, and if in doubt, seek professional assistance.
