As many of you might notice, the Odometer of the Mercedes-Benz W123 will break down after some years. Most of the times the digits will become “stuck”, the cilinder won’t turn anymore. Here’s a step-by-step-guide to fix this problem:
1. Find the panel located under the steering wheel and dashboard. Slots and screws ensure that this distinctive panel is securely in place. This feature also offers additional assurance that you have reached the correct area. Begin by loosening as well as removing each screw. Be careful to store the loose items for installing the panel after this repair is completed.
2. Reach forward and push cables until the gauge protrudes outwards. Look for the cable that presents oil levels. It should appear to stand out with a unique metallic color similar to gold or bronze tones. Also locate the current connection to the speedometer. The line will appear to be thicker than most selections.
3. Ensure all remaining cables and selections are disconnected. These choices may vary by model but should cover basic functions such as lighting. Take extra precaution to avoid possible damage or injury by testing each one before removal.
4. Find the equipment that houses the entire grouping of gauges. The outer shell should move after carefully applying pressure. If that fails, pull outwards with a larger amount of force.
5. The panel is now completely removed from the dashboard and free of obstructions. Check for any type of damage or external issues on the entire piece.
6. Look for the area that houses the clock, found on the left side if the area is placed face down. For further identification, the raised piece features two tiers that stand up above four circular open spaces. Inspect the clock to find screws that must be removed. Take each one out and place with other screws that have been removed during the process. Keep these labeled with their location. Take out the entire clock and place with other items that are already labeled.
7. Move on to the centrally located speedometer. Take out the screws and remove this feature as well. Look over the rest of the panel. Any remaining screws as well as pieces should be detached at this point in the process.
8. Carefully pull up the speedometer without damaging or interfering with any other places on the panel. Look for any protruding parts that could become stuck. Begin to inspect all gears on the speedometer. They should be in good condition with no excessive wear. Materials should be free from obstructions or other damage. Warped gears are often a reason for improperly functioning odometers. Items closest to the actual counter are a common cause for issues. If the gears must be replaced, ensure that the right size and shape is chosen before going forward.
9. Finish taking apart the speedometer. Take precautions to keep each piece safe while not in use. If a gear just needs repair instead of replacement, clean it thoroughly first. Slick or wet gears will need to be thoroughly dried. Use a metal appliance such as a drill bit or use sandpaper to create the necessary friction.
10. After all issues are addressed, start reassembling the dashboard. A simple way of doing this is to go backwards in the exact order of removal. Correct labeling and marking of parts during the process should make this an easy to accomplish step.
Repairing a odometer on the Mercedes-Benz W123 takes dedication and the right amount of knowledge to properly complete. Following these steps will make the job less difficult for even a novice to automotive maintenance.