Komatsu PC210-8 Shop Manual page 1072

UEN00662-00
7. From center swivel joint assembly, disconnect
6 hoses (8) – (13).
(8): Center swivel joint (D port) –
q
(9): Center swivel joint (E port) –
q
(10): Center swivel joint (B port) –
q
L.H. travel control valve (A2 port)
(11): Center swivel joint (D port) –
q
R.H. travel control valve (B5 port)
(12): Center swivel joint (A port) –
q
L.H. travel control valve (B2 port)
(13): Center swivel joint (C port) –
q
R.H. travel control valve (A5 port)
8. Pull out pin (14) on the center swivel joint, and
detach jam plate (15) from the center swivel
joint.
9. Remove 32 mounting bolts, and dismount
revolving frame assembly (16) off slinging it up.
[*1]
a Using levers and blocks, hold the balance
of revolving frame assembly front and
rear, and left and right.
k
When dismounting the revolving frame
assembly, take care so that it does not
hit the center swivel joint assembly.
4
Revolving frame assembly
PC210/230-8
PC240-8
16
Swing motor (T port)
solenoid valve
: 5,100kg
: 5,500kg
50 Disassembly and assembly
Installation
Installation is done in the reverse order of
q
removal.
[*1]
2
Swivel circle mating surface:
2
Thead of revolving frame mounting bolts:
In case of torque tightening:
q
3
mounting bolts:
716 – 814 Nm {73 – 83 kgm}
In case of angle tightening:
q
3
mounting bolts:
1) Initial torque:
294.2 ± 29.4 Nm {30 ± 3 kgm}
2) Then tighten the bolts turning by 60 ± 6°.
Refilling with oil (Hydraulic tank)
q
Refill hydraulic oil through the oil filler port to
the specified level. Let the oil circulate in the
hydraulic system by starting the engine. Then
check the oil level again.
Air bleeding
q
Bleed air from the travel motor referencing the
Air Bleeding of Various Parts section in the
Testing and adjusting chapter of this manual.
Gasket sealant (LG-1)
Adhesive compound (LT-2)
PC210, 230, 240-8