Hitachi ZW 550-6 Operator's Manual page 408

10. Aftertreatment device mounting bolt
Bolt A
Bolt diameter
Quantity
Wrench size
Tightening torque 90 N·m (9 kgf·m, 66 lbf·ft)
Bolt B
Bolt diameter
Quantity
Wrench size
Tightening torque 50 N·m (5 kgf·m, 37 lbf·ft)
Bolt C
Bolt diameter
Quantity
Wrench size
Tightening torque 210 N·m (21 kgf·m, 155 lbf·ft)
11. Counterweight mounting bolt
Bolt diameter
Quantity
Wrench size
Tightening torque 721 N·m (73.5 kgf·m, 531 lbf·ft)
MAINTENANCE
12 mm (0.5 in)
8
19 mm
10 mm (0.4 in)
20
17 mm
16 mm (0.63 in)
6
24 mm
24 mm (0.95 in)
8
36 mm
A
7-124
B
B
B
A
A
115Z7B-7-137-1
C
115Z7B-7-137-4