Komatsu ecot3 PC300LC-8 Shop Manual page 949

50 Disassembly and assembly
Installation
q Install in reverse order of removal.
[*1]
3
Counterweight mounting bolt:
1,715?1,911 Nm {175?195 kgm}
3
Mounting bolt threaded section:
Adhesive compound (LT - 2)
[*2]
a Installing and adjusting counterweight
1) Adjust the level difference from the exterior
part (vertical clearance) with the shim
between the counterweight and revolving
frame.
q Set shim thickness:
2) Install counterweight in such a way that
clearance between the door and counter-
weight as well as clearance between the
revolving frame and counterweight become
10 Å} 5 mm.
3) The difference in level in left to right direction
between the exterior of door (D) and counter-
weight (C)
(a): 10 Å} 4 mm
The difference in level in left to right direction
between revolving frame(R) and counter-
weight (C)
(b): 5 mm or less
The difference in level in up and down direc-
tion between exterior upper cover (UC) and
counterweight (C)
(c): 0 Å} 5 mm
are the respective limits for the mounting
adjustment.
a Rear view (Enlarged view for right hand
side of the machine)
PC300, 350-8
1.0 mm, 2.0 mm
a Precaution when installing the mounting bolts.
Tight the mounting bolts by using the hand
wrench until counterweight mating surface
contacts the counter part.
Then, tight the mounting bolts to the specified
torque by using large impact wrench or large
wrench.
SEN02638-03
15