MAINTENANCE 4.12 EVERY 1000 OPERATING HOURS OR EVERY 6 MONTH High-Strength Bolt Connections (continued) Check condition and fastening of both swing gears (01) and swing motors (02), illust. Z 22514 Reference No.: Qty. (8) 16 (25) 34 * SW = Wrench size REMARK After checking and retightening of swing gear mounting bolts (25), attach protection caps (26) onto the bolt heads. 397 Bolt size mm Grade SW * mm Tightening torque Nm M 16 10.9 24 265 M 24 12.9 36 1030