Pully should move freely. You are correct. The pump has seized. Maybe the folks here can help you. You can try Atlanta-Stuttgart Auto Parts. They have tons of old MBZ parts etc. The number is 1-800-635-1445. Punch in 1110 for extension and you'll get Dave. I think Benzmac has a couple of other sources as well.
1987 BMW 325
[This message has been edited by jeffsr (edited 04-26-2000).]