I used super glue on the shaft and gear on my 87. What's happening is that the gear is spinning on the shaft. It's some kind of compression fitting design which fails over time. One has to be careful to have the numbers lined up correctly before putting the glue on. You get one chance.

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DS
2010 CL550 - Heaven help me but it's beautiful
87 300D a labor of love
11 GLK 350 So far, so good
08 E350 4matic, Love it.
99 E320 too rusted, sold
87 260E Donated to Newgate School
www.Newgateschool.org - check it out.
12 Ford Escape, sold, forgotten
87 300D, sold, what a mistake
06 Passat 2.0T, PITA, sold

Las Vegas NV