Komatsu PC20R-8 Shop Manual page 256

REMOVAL AND INSTALLATION
INSTALLATION OF THE ARM
To install, reverse the removal procedure.
.
H Insert shims between link and arm.
When aligning the positions between the hole and
the pin, do not insert fingers in the holes to check
alignment.
H Insert shims on base sides of the piston rod.
Internal bushings: ASL800050
H Insert the shims on both sides of the piston rod.
When aligning the positions between the hole and
the pin, turn the engine over at low idling.
Do not insert fingers in the holes to check alignment.
Internal bushings: ASL800050
H Adjust the shim thickness so that the clearance be-
tween arm and boom is below 1 mm.
When aligning the positions between the hole and
the pin, do not insert fingers in the holes to check
alignment.
Start the engine to circulate the oil and bleed the air
.
from the cylinder.
H After bleeding the air, stop the engine and check
the oil level in the tank.
30-74
MAX.1mm
PC20R-8 PC27R-8
ARM
RKP06340