Volvo Maintenance Hints for 7xx/9xx - Bill Garland's Nuclear ...

● With the sunroof removed, it's a good time to check some of the operating
components such as the drains and motor. On this vehicle, the drains connect
to four separate water hoses (figure P) that drain the water away and out of the
car. Check the drains to ensure that they are not clogged, and check the hoses
and clamps to make sure they are in good order. Also check the drain troughs
to ensure that they are not blocked with debris.
● Check to see if your sunroof mechanism needs lubrication. Since our vehicle
has a power sunroof, we took this opportunity to check the electric motor and
wiring (figure Q). If your power sunroof motor is dragging or causing problems,
this would be a good time to replace it.
Figure P
Figure Q
After repairing the board and recovering the material, the headliner and sunroof panel
are reinstalled in the vehicle. [Chris] I put the board back in the car through the front
passenger side of my sedan, the same way I took it out. I moved the seat as far back
as possible, and lowered the back as far down as possible. It does go in without taking
the seats out. Try real hard to get the new headliner board back on the roof without
breaking it.
All vehicles:
● Install in reverse order. A slight deformation of the headlining paper material
(not the cloth) at the sun visor attachments is OK as it is not visible once the
headlining is installed.
● Vehicles with sunroof:
❍ tape the leads in the recess in the top of the headlining;
❍ position rear drain hoses in headlining recesses
❍ keep drain hose screw clamps from exerting pressure on headlining
❍ apply double-sided tape to base plate around sunroof opening
● Slide in headlining beneath the rear side panels and loosely support front edge
on the sun visor attachments or mirror. Sedans/saloons: slide in headlining
through passenger side door; wagons/estates: slide in through rear hatch. In