SEN02711-00 50 Disassembly and assembly
12 PC138US, USLC-8
Removal and installation of
swing circle assembly 1
Removal
k Gradually loosen the hydraulic oil tank cap
to bleed the air from the tank after ground-
ing the work equipment and stopping the
engine and lock the safety lock lever.
1. Remove the revolving frame assembly by
referring to "Removal of revolving frame
assembly".
2. Temporarily lift swing circle assembly (1) to
remove the 38 mounting bolts. [*1]
3. Remove swing circle assembly (1). [*2]
4 Swing circle assembly : 155 kg
Installation
q Installation is performed in the opposite way to
removal.
[*1]
2 Swing circle mounting bolt:
Liquefied adhesive (LT-2)
3 Swing circle mounting bolt :
245 – 308.9 Nm {25 – 31.5 kgm}
[*2]
a Lift swing circle assembly (1) and install it on
the track frame with the inner wheel soft zone
(S) symbol of the inner race facing the right
side of the body as shown in the figure.
2 Amount of circle grease sealed: 9.1 l
ll
l
grease (G2-LI)
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