Machine: 320D2 S/N: TDN00473, SMU. 1012 Hours. Complaint: Found clamp tube line bucket cylinder is lose.Cause: P/n:8T-4910 Bolt is loose and lose. Then cause clamp tube line bucket cylinder is lose.Correction: Install new P/n:8T-4910bolt ,P/n:9M-2828 washer and P/n:096-4480 clamp.