Hitachi ZW 310-6 Operator's Manual page 399

9. Aftertreatment device mounting bolt/nut
Bolt A
Bolt diameter
Quantity
Wrench size
Tightening torque 90 N·m (9.2 kgf·m, 66 lbf·ft)
Nut B
Nut diameter
Quantity
Wrench size
Tightening torque 20 N·m (2 kgf·m, 15 lbf·ft)
10. Counterweight mounting bolt
Bolt diameter
Quantity
Wrench size
Tightening torque 700 N·m (70 kgf·m, 516 lbf·ft)
11. Top center pin upper flange lock
Bolt diameter
Quantity
Wrench size
Tightening torque 210 N·m (21 kgf·m, 155 lbf·ft)
12. Top center pin lower bushing lock
Bolt diameter
Quantity
Wrench size
Tightening torque 422 N·m (43 kgf·m, 311 lbf·ft)
MAINTENANCE
12 mm (0.5 in)
8
19 mm
10 mm (0.4 in)
16
17 mm
24 mm (0.95 in)
8
36 mm
16 mm (0.63 in)
8
24 mm
18 mm (0.71 in)
5
24 mm
B
A
7-121
B
A
B
A
90Z7B-7-117-1
90Z7B-7-117-2
90Z7-7-108-3