hitachi — ASSEMBLE TRAVEL DEVICE

UNDERCARRIAGE / Travel Device IMPORTANT: Install bearing nut (34) with the stepped part facing to the bearing side. 7. Install bearing nut (34) to motor (31) and tighten by hand. 12. Clean bolts (35) (2 used). Apply LOCTITE #262 or THREEBOND #1386B to bolt (35). Clean the bolt (35) hole on bearing nut (34). Install lock plate (36) to bearing nut (34) so that the convex part of lock plate (36) can be aligned with the concave part (one of 2 places) of motor (31). If the bolt hole on lock plate (36) is not aligned, tighten bearing nut (34) in order to align. NOTE: Apply grease to the thread part of bearing nut (34). If no grease is applied, it cannot be tightened to the specified torque. 8.

Secure the travel device in order not to rotate. Install special tool to bearing nut (34). Tighten bearing nut (34) by using a torque wrench. Special tool: ST 3052, ST 3051, ST 3330 Bolt: M16 (Length 60 to 90 mm) (2 used) : 90 N m (9.0 kgf m, 66 lbf ft) : 19 mm : 800 N m (80 kgf m, 590 lbf ft) W1V7-03-02-006 13. Install needle bearings (29) (2 used for each) to third stage planetary gears (30) (4 used). IMPORTANT: There is an identification groove on one side of planetary gear (30). Install with the identification groove facing to the spring pin (26) hole. 14. Install spacer (2) to third stage carrier (1).

Align thrust plate (28) with both ends of third stage planetary gears (30) (4 used) and install thrust plates (28) (8 used) to third stage carrier (1). 34 36 35 W1V7-03-02-004 9. After tighten bearing nuts (34) to the specified torque and tap the drum (40) end by using a plastic hammer in order to reduce play. Rotate sprocket (39) both clockwise and counterclockwise 4 to 5 turns. 10. Repeat steps 8, 9. 11. Repeat step 9 again. Tighten bearing nut (34) to the specified torque. Special tool: ST 3052, ST 3051, ST 3330) Bolt: M16 (Length 60 to 90 mm) (2 used) : 800 N m (80 kgf m, 590 lbf ft) W3-2-13 ST 3052 ST 3330 ST 3051 39 40 ST 3052 ST 3330 34