300E 4MATIC (124.230) L6-3.0L (103.985) (1990)
10. Force window at front out of window guide rail, while turning window at the rear in upward direction.
11. Introduce window lifting rail from the front into guide member.
12. Introduce slide member from rear window lifting arm into cutout of window lifting rail.
13. Set window to horizontal position while inserting window at rear and front into window guide rail.
14. Insert window lifting arm at front into window lifting rail and fasten.
15. For further installation proceed vice versa.