Although the instructions will not tell you you must lubricate the parts for the window to function.
Replacing saab window rollers.
Replacing the window glass in the front door is a very simple repair.
The original design is flawed so the parts will fail regularly usually at an inconvenient time like a rain storm.
The rollers are cheap so i suggest keeping a spare set on hand.
Typical junkyard cost is 75 for the front glass vs 375 for a new window put in by a glass repair company.
Don t remove the cotter pins.