ASSEMBLING
6-24
INSTALLING ARM
d
WARNING: Never allow anyone to enter into the area
under lifted arm (2).
1. Apply grease to boom (1) and arm (2) connecting pin (3).
2. While slinging arm (2) with a crane, align pin hole (4) of
arm (2) with that of boom (1).
3. Install the plate between boom (1) and arm (2). Align
boom (1) bottom hole with the boss hole on the arm
(2). Measure clearance “a.” If clearance “a” is 1 mm (0.04
in) or more, remove the shim on the pin and install it, as
illustrated
d
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.
• When inserting the pin, never enter into the area
under arm (2).
4. Drive the pin into the arm and boom holes.
5. Insert pin lock plate (5) with bolts (6).
Tightening torque: 400 N•m (40 kgf•m, 290 lbf•ft)
M1J1-06-020
M1J1-06-021
1
2
4
3
1
5
6
2
Shim
Pin
Clearance (a)
M1J7-06-018
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