Installing Counterweight - Hitachi ZAXIS 450LC-3 Operator's Manual

INSTALLING COUNTERWEIGHT

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WARNING: Never allow anyone to enter into the area
under lifted counterweight (1).
1. Lift counterweight (1) using a crane.
2. Insert the convex bosses of counterweight (1) into holes
on the back face of base machine (2). Tighten bolts (3).
Tightening torque: 2800 N•m (280 kgf•m, 2025 lbf•ft)
3. Install plates (6) and lock plates (4) onto the convex boss
surfaces, and tighten them with bolts (5).
Tightening torque: 700 N•m (70 kgf•m, 506 lbf•ft)
4. Bend the corners of lock plates (4) to prevent bolts (5)
from loosening.
ASSEMBLING
1
6-30
3
2
M116-07-024
5
4
6
M116-07-020