MAINTENANCE 4.12 EVERY 1000 OPERATING HOURS OR EVERY 6 MONTH High-Strength Bolt Connections (continued) Check condition and fastening of travel gears, sprockets and travel motors Legend for illust. Z 21779: (1) Crawler carrier fork (2) Travel gear (3) Sprocket, consists of three parts (4) Mounting ring for sprocket parts to travel gear (5) Mounting bolts for sprocket parts to travel gear (6) Mounting ring for travel gear to crawler carrier (7) Mounting bolts for travel gear to crawler carrier (8) Travel motors (9) Mounting bolts for travel motors * SW = Wrench size 407 Reference No.: Bolt size mm Grade SW * mm Tightening torque Nm Qty.
(5) M36 10.9 55 3100 86 (7) M36 10.9 55 3100 72 (9) M16 10.9 24 265 16