1. Buy the parts, preferably from me.
2. Remove trim plate on the front of the door
3. Remove window winder handle
4. Carefully remove upper and lower door panels
5. Remove 2 rear facing bolts at bottom of vent window frame
6. Remove screws near the top of the door
7. Remove vent window assembly from door, you may have to spread the opening
8. Remove retaining/tension clip below window
9. Push window down to disengage pivot stud and remove window from frame
10. Remove old seal
11. Install new seal, use silicone spray lubricant,
12. Verify the drain holes in the bottom of the seal are open
13. Put it back together

If present, make sure the special clip on the back of the upper door panel engages the metal upper brace for the lower door panel. When properly installed the clip helps hold the bottom of the upper door panel in place.

Also make sure the large flap at the bottom of the vent window seal doesn't get pinched under the upper door panel. It's okay for it to be partially wedged behind the panel as it's normal to have to gently pull it up and over the top of the door panel where it is supposed to be.

FYI, this is an excellent time to replace the outer window scrapers and the window guide channels and most importantly, clear the drain holes in the bottom of the door while you have the vent window assembly removed.

If it's been a long time since anyone has been inside the door, I usually find a layer of caked up dirt in the crease inside at the bottom of the door. A vacuum cleaner won't remove it and it is necessary to break it up with a tool so it can be removed with a vacuum cleaner. Besides blocking the door drains, this caked up dirt can at like a sponge holding moisture to the back of the door skin and promoting rust from within.


--
Eric
Hi Performance Automotive Service (formerly OVO or Old Volvos Only)
Torrance, CA 90502
hiperformanceautoservice.com or oldvolvosonly.com