Hitachi ZW 550-6 Operator's Manual page 409

12. Top center pin upper flange lock
Bolt diameter
Quantity
Wrench size
Tightening torque 400 N·m (40 kgf·m, 295 lbf·ft)
13. Top center pin lower bushing lock
Bolt diameter
Quantity
Wrench size
Tightening torque 675 N·m (69 kgf·m, 498 lbf·ft)
f
NOTE: Apply lubrication oil.
14. Bottom center pin lock
Bolt diameter
Quantity
Wrench size
Tightening torque 550 N·m (55 kgf·m, 406 lbf·ft)
15. Steering cylinder pin lock
Bolt diameter
Quantity
Wrench size
Tightening torque 210 N·m (21 kgf·m, 155 lbf·ft)
MAINTENANCE
20 mm (0.8 in)
12
30 mm
20 mm (0.8 in)
6
30 mm
20 mm (0.8 in)
1
30 mm
16 mm (0.63 in)
4
24 mm
7-125
12
13
14
115Z7B-7-137-3
MNHE-07-014