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

INSTALLING COUNTERWEIGHT

d
WARNING: Never allow anyone to enter into the area
under the lifted counterweight.
1. Lift counterweight using a crane.
2. Insert the convex bosses of counterweight into the holes
on base machine.
3. Apply a film of grease to two counterweight mounting
bolts(10). Install two bolts (10), each two washers (8)
(9), two nuts (7) and shim (6). Tighten counterweight
mounting bolts (10) by power wrench.
Tightening torque: 2400 N•m (240 kgf•m, 1735 lbf•ft)
4. Install shims (4), (5), plates (3), lock washers (2), and bolts
(1).
Tightening torque: 450 N•m (45 kgf•m, 325 lbf•ft)
f
NOTE: If any gap exists between plates (3) and bracket, fill
the gap with shims (4), (5).
5. Install covers (11), (12) with each 11 pieces of spring
washers (14) and washers (15). Tighten bolts (13).
ASSEMBLING
1
2
3
4
5
11
7
3
1, 2
4, 5
6-6
1
2
3
4
5
7
8
14
13
15
14
13
8
Convex Bosses
Bracket
Counter Weight
W1J1-02-02-001
6
7
8
9
10
12
15
W1J1-02-02-002
9
10
M1J1-06-016