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Classic Saab 900: Electric window overhaul

To remove interior door panel:

Although the procedures given below apply to the front doors, they can also be used as a guide for removing the interior trim for the rear doors.

pic 11. Unscrew the locking knob. Where applicable, carefully pry off the disc from the window crank and remove the crank screw and crank. See photo

NOTE
Before removing the window crank, make a note of its position with the window closed.Door panel retaining screws (arrows) on hatchback and convertible models. Door pull and upper trim insert panel removed.

2. On sedan models, pry out the trim cover for the inner door handle. Remove the screws that hold the armrest to the door. Then carefully pry off the panel by working around the perimeter of the door. The panel is held in place by retaining clips. Lift the panel up slightly to remove it.

pic 23. On hatchback and convertible models, remove the door pull retaining screw and remove the door pull. Slide the trim insert panel up and off its mounting clips. Remove the screws holding the panel to the door. See photo.

4. Carefully remove the moisture barrier from the door.

Installation is the reverse of removal. Always test the window, mirror, and locking functions before reinstalling the panel. Replace any damaged retaining clips, If the moisture barrier is handled carefully and kept clean, it can be reused. Apply thread locking compound to the window crank handle screw.

NOTE
Always replace the moisture barrier if it becomes damaged.

Windows

This section covers removal and installation of the door windows, window regulators, and power window motors. The door windows are controlled by window regulators that move the glass in fixed channels. To replace the power window motor, the regulator assembly must first be removed from the door.

WARNING
Always disconnect the electric window motor when working on it. The motor is powerful enough to cause injury if it should come on by accident.

NOTE
Replacement of the windshield, the rear windows, and fixed side windows is not covered here. These windows are held in place with weather-tight seals. Special equipment and techniques are required to replace these windows.

To remove and install front power window regulator

pic 3
Fig. 1: Spring clip for inner weatherstrip being removed.

1. Disconnect the negative (-) battery cable.

2. Remove the interior door trim and moisture barrier as described earlier.

3. Pry off the inner window weatherstrip spring clips and remove the inner weatherstrip from the door. See Fig. 1.

4. Locate the window motor electrical connector inside the door and disconnect it. See Fig. 2

5. While supporting the window glass, remove the screws holding the glass to the regulator. See Fig. 3.

6. Remove the window glass by rotating it to the vertical position and sliding it up out of the door.

7. Remove the four bolts holding the regulator assembly to the door and remove the assembly through the opening in the door. See Fig. 4.

pic 4 pic 5 pic 6
Fig. 2: Connector for power window motor disconnected. Also shown is motor (A) and gear sector (B). Fig. 3 : Regulator-to-window glass support mounting screws (arrows), Support glass after removing screws. Fig. 4 : Regulator-to-door mounting bolt being removed, Two bolts (not shown) at top must be removed also.

pic 7
Fig. 5 : Power motor mounting bolt being removed.
8. Remove the three bolts holding the motor to the regulator. See Fig. 5.

NOTE
The plastic moisture barrier on the old motor must be reinstalled on the new motor to keep out moisture.

Installation is the reverse of removal. Test the new motor before installing it in the door. A thin film of white grease can be applied to moving parts.

NOTE
The power motor can be tested by disconnecting the connectors at the motor and testing for voltage when the window switch is pushed in either direction (ignition key on). If power is present at the connector, the motor is faulty. If voltage is not present, the problem lies in the switch or other part of the circuit.

To remove and install rear power window reguIator (except convertible)

1. Disconnect the negative (-) battery cable. Remove the window switch from the interior trim.

2. Remove the interior door trim and moisture barrier as described earlier. Disconnect the electrical connector for the power window located inside the door.

3. While supporting the window glass, remove the screws that hold the glass to the regulator arm. See Fig.3 shown above. Then push the window up until it is fully closed.

CAUTION
Once the window-to-regulator screws are removed, the window should be supported. With the window fully closed, tape the glass to the doorframe to prevent it from falling.

NOTE
Removal of the rear door window requires that the fixed side pane be removed so that the rear window channel can be moved out of the way. The window channel is held in place with two screws that can be accessed after removing the rubber concealing plugs in the door.

pic 8
Fig 6 : Rear door regulator mounting screws (arrows)

4. Remove the five screws that hold the regulator assembly to the door. See Fig6. Remove the assembly through the opening in the door.

NOTE
Slide the regulator arm forward to help in removing the assembly from the door.

5. Remove the screws that hold the motor to the regulator.

NOTE
Always reinstall the old protective cover to the window motor.

Installation is the reverse of removal. Test the new motor before installing it in the door. A thin film of white grease can be applied to moving parts.

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