The power antenna on my '95 850 stopped going up and down. You could
hear the motor run, but the mast never moved. So I Googled "Volvo
antenna" and bought a replacement mast. It's here now, but without
instructions.

I had the power antenna out and apart enough to see the nylon chain was
broken, but I am wondering if there is a trick or two to replacing the
mast. I will attempt replacement in the next day or two. Any
instructions, advice, or warnings will be greatly appreciated.