Boom Swing Support; Removal; Installation - Komatsu PC20R-8 Shop Manual

REMOVAL AND INSTALLATION
REMOVAL OF THE BOOM SWING SUPPORT
Extend the working equipment completely and rest it
on the ground.
1 - Remove the front working equipment. (For details,
see «REMOVAL OF THE UPPER WORKING EQUIP-
MENT»).
2 - Remove the boom cylinder. (For details, see «RE-
MOVAL OF THE BOOM»).
3 - Disconnect the boom swing cylinder (1). (For details,
see «REMOVAL OF THE BOOM SWING CYLIN-
DER»).
4 - Remove the protection (2).
5 - Disconnect the bracket (3) from the boom swing sup-
port.
6 - Attach the boom swing support (2) to some hoisting
tackle and apply a slight tension to the cable.
7 - Take out the bracket (5), remove the pin (6) and re-
move the boom swing support (4).
H Make a note of the position of the spacer (7) and
the quantity of shims (8).
Boom swing support: PC20R-8: 37 kg
INSTALLATION OF THE BOOM
SWING SUPPORT
To install, reverse the removal procedure.
.
When aligning the positions between the hole and
the pin, do not insert fingers in the holes to check
alignment.
Pins: ASL800050
H Adjust the shim thickness so that the clearance be-
tween swing bracket (4) and frame (9) is below 0.5
mm.
Supporting surfaces and shims: ASL800050
30-78
PC27R-8: 52 kg

BOOM SWING SUPPORT

1
4
4
6
7
8
4
RKPA3790
3
2
RKPA3830
5
RKPA3820
9
RKP06350
PC20R-8 PC27R-8