Installing Bucket - Hitachi Zaxis 850LC-3 Operator's Manual

INSTALLING BUCKET

1. Install the Unit Type O-rings (only Long Arm Spec) around
the bucket bosses at the arm connecting section. (In case
using Separate Type O-rings, refer to "O-ring Installation
Method" in the maintenance.)
2. Start the engine. Raise the arm (2) tip approximately 2.5
m (2.7 yd) above the ground.
3. Sling bucket (6) with a crane. Align pin (5) hole of the
bucket with pin hole (4) of the arm.
4. While the top of the bucket boss contacts the arm, adjust
the clearance between arm and bucket to become from
0.5mm to 1mm (0.02 in to 0.04 in) by Shims. Refer to the
page for "Adjust the Bucket Linkage" in the maintenance
section.)
WARNING:
• When aligning the centers of the pin and pin hole,
never put fingers into the pin hole.
• When using a hammer, wear safety equipment
such as safety glasses or a hard hat to protect
against injury from flying pieces of metal.
• While installing the bucket pin, never allow anyone
to enter into the area under the bucket.
5. Drive pin (5) into the pin bosses. Secure pin (5) and pin
lock stopper (10) with bolt (11).
Tightening torque: 400 N•m (40 kgf•m, 290 lbf•ft)
6. While extending or retracting the bucket cylinder, align
pin hole (3) of the link with that of bucket (6).
7. Drive the pin (7) into the bucket and link. Secure the pin
(7) and pin lock stopper (8) with bolt (9).
Tightening torque: 400 N•m (40 kgf•m, 290 lbf•ft)
8. Slide the O-ring onto the boss end gap between the
bucket and arm. (Refer to the page for "Change Bucket "
in the maintenance section.)
ASSEMBLING
Bucket Boss
2
Clearance Adjust Part
Shim
6-14
1
3
4
Bucket
Arm
8
11
Arm
M1J1-06-024
5
6
7
M116-07-038
M503-07-056
Pin
M1JB-07-057
9
10
M1JB-07-058