Komatsu F30791, Shop Manual

Page: 224 / 298

REMOVAL OF THE SWIVEL JOINT
Lower the working equipment untilit is resting on the
ground, and stop the engine.
Release all residual pressures from all circuits and
from the tank. (For details, see «20. CONTROLS
AND ADJUSTMENTS»).
1 - Remove the floor-mat complete.
(For details, see «REMOVAL OF THE PLATFORM»).
2 - Disconnect the upper tubes (3) from the swiveljoint
(1) (N
o
. 8).
H Mark the tubes to avoid exchanging them during
re-assembly.
H Plug the tubes to prevent entry of impurities.
3 - Remove the protective cover (2) from the lower track-
frame.
4 - Disconnect the tubes (3) from the swiveljoint (4).
H Mark the tubes to avoid exchanging them during
re-assembly.
H Plug the tubes to prevent entry of impurities.
5 - Loosen the screws (5) and remove the swiveljoint (4).
INSTALLATION OF SWIVEL JOINT
.
To install, reverse the removal procedure.
H Make sure that the swiveljoint is correctly positioned
and that the rotor pin is engaged properly in the brack-
et.
Bracket screws: 85 Nm
1 - Start the engine to circulate the oil, bleed air from the
lower circuits and check that tubes are leaktight.
2 - Stop the engine and check the level of the tank.
3 - Pressurise the tank.
30-42
REMOVAL AND INSTALLATION SWIVEL JOINT
PC20R-8 PC27R-8
RKPA3340
1
6
RKZA3350
2
RKPA3360
4
3
5