Hitachi ZW 550-6 Operator's Manual page 412

19. Cooler assembly mounting bolt
Bolt A: Air conditioner condenser
Bolt diameter
Quantity
Wrench size
Tightening torque
(1.0~11.7 kgf·m, 7.5~11.2 lbf·ft)
Bolt B: Hydraulic oil cooler
Bolt C: Fuel cooler
Bolt D: Air cooler
Bolt diameter
Quantity
Wrench size
Tightening torque 90 N·m (9 kgf·m, 66.4 lbf·ft)
20. Air conditioner compressor mounting bolt
Bolt diameter
Quantity
Wrench size
Tightening torque
(2.5~3 kgf·m, 18~21.7 lbf·ft)
MAINTENANCE
8 mm (0.3 in)
4
13 mm
10.2~15.2 N·m
12 mm (0.47 in)
12
19 mm
8 mm (0.3 in)
4
13 mm
24.5~29.4 N·m
A
C
A
D
7-128
A
B
115Z7B-7-140-1
115Z7B-7-140-2
115Z7B-7-140-3
C
C
D