After eight years and close to 10,000 cups of coffee the pump gave out. It's at lower right. It's just a solenoid with a valve on one end. The pump part was fine but the check valve, made of nylon, broke. I didn't see any good way to repair or replace just the valve so I put in a new pump.
This view is from the rear. The steamer valve stem pokes through the left side, the switches are in the front (top of this photo), and the boiler is in the center.