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Removal and installation of swing circle assembly
Place the machine on a level ground and
lower the work equipment to the ground in a
stable posture.
Stop the engine, turn the battery disconnect
switch to OFF position, and remove the key.
(For details, see "Testing and adjusting",
"Handling battery disconnect switch".)
Set the lock lever in LOCK position.
Removal
(PC88MR-J110-520-K-00-A)
1. Remove the revolving frame assembly. For
details, see "Removal and installation of
revolving frame assembly".
2. Sling swing circle assembly (1), hold it, and
remove mounting bolts (24 pieces). [*1]
3. Sling swing circle assembly (1), and remove it.
[*2]
Swing circle assembly (1):
120 kg
Installation
(PC88MR-J110-720-K-00-A)
Perform installation in the reverse order to
removal.
[*1]
Swing circle mounting bolt:
Adhesive (LT-2)
Swing circle mounting bolt:
235 to 285 Nm {23.5 to 29.5 kgm}
Target 260 Nm {26.5 kgm}]
[*2]
Sling the swing circle assembly, and direct "S"
mark of the inner ring soft zone of the inner race
toward the position shown in the figure, and
install the track frame.
"T" is the position of outer race soft zone.
Swing circle mounting surface:
Liquid gasket (LG-9)
PC88MR-10
50 Disassembly and assembly
(PC88MR-J110-924-K-00-A)
Swing circle sealing amount:
5.5 l l (G2 L1)
Sufficiently apply grease (G2-L1) to the internal
gear and part "P".
Power train system
50-121
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