The factory manual wants you to completely disassemble the roof but most people just remove the top chrome covers and grease the rails. Be sure to use the proper MB grease, which is waterproof and won't attract dust. You can buy small quantities from FastLane.

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970