Sort and wash beans; combine with 3 cups water in a small saucepan. Bring to a boil; cook 1 minute. Remove from heat. Let stand 20 minutes. Drain; set aside.
Trim fat from lamb. Place flour, salt, and pepper in a large zip-top plastic bag; add lamb. Seal; shake to coat. Remove lamb from bag; shake off excess flour mixture. Reserve 1 1/2 teaspoons flour mixture, and set aside. Heat 1 teaspoon oil in a 6-quart pressure cooker over medium heat. Add 1 lamb shank; cook 8 minutes on all sides or until browned. Remove lamb from pan. Repeat procedure with 1 teaspoon oil and 1 lamb shank. Add shallots and garlic, and sauté 2 minutes. Add the beans, 1/4 cup water, reserved 1 1/2 teaspoons flour mixture, red wine, and the next 4 ingredients (wine through broth). Close lid; bring to high pressure over high heat (about 7 minutes). Adjust heat to medium or level needed to maintain high pressure; cook 45 minutes. Remove from heat; place the cooker under cold running water. Remove lid. Remove lamb from pan; cool completely. Remove meat from bones; discard bones, fat, and gristle. Skim fat from surface. Stir meat into bean mixture. Sprinkle with parsley. Serve over noodles.