Hitachi ZAXIS 250LC-7 Operator's Manual page 44

Counterweight Installation
ZX250LC(N)-7
ZX300LC(N)-7
Counterweight:
Model
HE15LD
ZX250LC(N)-7
HE18LD
HE15LD
ZX300LC(N)-7
HE18LD
1. Lift the counterweight (17) by using a crane and install
the counterweight on the frame.
Install the washer (18). Temporally tighten the bolt (19)
2. Remove the wire ropes. Tighten the counterweight
mounting bolts by using a power wrench and a torque
wrench.
Tightening Torque:
Model Type
HE15LD
ZX250LC(N)-7
HE18LD
HE15LD
ZX300LC(N)-7
HE18LD
3. Remove the freno link bolt. Install the cap (20).
DISASSEMBLING • ASSEMBLING
Type Counterweight
7750 kg
7200 kg
Tightening Torque
+400
1950 N·m (195
-100
+400
2360 N·m (236
-100
+40
kgf·m)
-10
+40
kgf·m)
-10
4-10
18
Torque Wrench
20
17
19
W178-02-02-003
Power
Wrench
W178-02-02-004
W178-02-02-001