BACK UP RING REF.5 YANMAR.N330-EN.24375- 001550 支撑环 YANMAR.N330-EN.24375-000850 O 型圈 YANMAR.N330-EN.24321-001550 O 型圈 YANMAR.N330-EN.24321-000850 图 95 液压千斤顶 (头螺栓)