Long Arm Operation - Hitachi 120-3 class Operator's Manual

LONG ARM OPERATION --- IF EQUIPPED
ZX110-3, 110M-3, 130-3
1. The optional [ZX110-3, 110M-3: 2.81 m (9' 3")] [ZX130-3:
3.01 m (9' 11")] long arm is only for light works such as
loam loading, sludge handling,etc.. Do not use it for
heavy works such as digging gravel.
When the arm is used for digging, apply shallow cut to
the ground to avoid tough digging, or arm damage may
result.
2. When the machine is equipped with the [ZX110-3,
110M-3: 2.81 m (9' 3")] [ZX130-3: 3.01 m (9' 11")] long arm,
the hoe-bucket size must be limited to the followings
due to stability and strength of the machine;
ZX110-3 *PCSA 0.40 m
PCSA 0.45 m
ZX110M-3 *PCSA 0.50 m
ZX130-3 *PCSA 0.45 m
PCSA 0.50 m
*with 700 mm (28 in) shoe
3. When the machine is equipped with the long arm, con-
nect the arm cylinder end to:
Pin bore A (when the machine is in operation)
Pin bore B (when the machine is transported)
IMPORTANT: Connect the arm cylinder rod end to pin bore
B only when the machine is transported.
Do not operate the digging or loading func-
tion with the arm cylinder connected to pin
bore B as the bucket may hit the cab acci-
dentally with this connection.
When transporting the machine, follow the procedure
shown below to convert it into the transporting posture.
(a) Position the bucket cylinder with rod retracted a little
from the fully extended position.
(b) Position the arm cylinder with rod retracted a little from
the fully extended position.
(c) Lower the boom until the arm top comes into contact
with the ground.
Arm Cylinder
Rod End
Connected To:
Without Bucket
Pin Bore A 2810 (9' 2")
Pin Bore B 2520 (8' 3")
OPTIONAL ATTACHMENTS AND DEVICES
3 3
(0.52 yd )
3 3
(0.59 yd )
3 3
(0.65 yd )
3 3
(0.59 yd )
3 3
(0.65 yd )
ZX110-3
With Bucket Without Bucket
3070 (10' 2")
2680 (8' 9")
Dimensions include shoe-lug height.
Height of Front Attachment (H)
ZX110M-3
With Bucket
2840 (9' 2") 3060 (10' 2")
2560 (8' 3") 2690 (8' 9")
13-6
Unit: mm (ft•in)
ZX130-3
Without Bucket With Bucket
2810 (9' 2") 3100 (10' 2")
2540 (8' 3") 2680 (8' 9")
M163-05-001