Check And Replace Seat Belt And Lower Tether; Check Rops, Rops Mounting Bolts, And Cab - Hitachi ZW 550-6 Operator's Manual

5. Tap lock pin (1) into the flush ear using a hammer.
6. Replace segments (6) with new ones.
Segment mounting bolt tightening torque:
1-1/4-7UNC bolt: 2402 N·m (245 kgf·m, 1772 lbf·ft)
7. Retighten nuts (6) after a few hours of operation.

Check and Replace Seat Belt and Lower Tether

Check --- every 10 hours (daily)
Replace --- every 3 years
Examine buckle (1), attaching hardware (2) and seat belt
web. Replace the seat belt web, buckle, or attaching
hardware if they are damaged, or worn.
Also check the wind-up condition of the seat belt.
Replace seat belt and lower tether every 3 years, regardless
of appearance.

Check ROPS, ROPS Mounting Bolts, and Cab

--- every 10 hours (daily)
Check the appearance of ROPS (1) and Cab (3) for any
abnormal damage or deformation.
Check the condition of ROPS mounting bolts (2). Retighten
them, if loosened.
Tightening torque:
Bolt (2): 1421 N·m (145 kgf·m, 1048 lbf·ft)
MAINTENANCE
3
7-112
2
1
MNHE-07-055
95ZV0017
115Z7-3-4-3
1
2