INSTALLING ARM
WARNING: Never allow anyone to enter into the area
under the 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 the
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 illus-
trated
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 the arm.
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)
ASSEMBLING
5
6-11
1
3
4
6
Pin
Shim
Clearance (a)
2
M1J1-06-019
M1J1-06-020
2
1
M1J1-06-021