Also covers 1980 W116 sedans. The sunroof transmission drive unit moves the cable back and forth to open and close the sunroof. Five gears inside this unit transfer the incoming drive from the motor ( high speed) to the final drive, moving the cable (slow speed). If this unit becomes over-stressed due to a lack of lubrication in the sunroof panel mechanism, gears can break or strip, or the cable itself can be damaged. It is VERY important that this unit be inspected and properly serviced just because it NEVER gets done - even by so-called professional mechanics.
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Product Details
In this 12.5-minute instructional video, Kent will take apart one of these units and explain what each gear does and how everything should go together. You will see a broken gear replaced and the entire unit properly lubricated and reassembled in preparation for going back into your trunk. At the end of the video, he will share some installation tips and demonstrate how to set the clutch adjustment for future installation of the cable and sunroof panel.
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Important note: This video manual may or may not include all the information you will need to troubleshoot and/or repair your specific problem/s. Please read the full description carefully to determine if this video is applicable to your year and model and contains the information you are looking for. If not, please refer back to our "Solutions Finder" and enter your chassis number and the specific problem you are having to see if we offer a solution.