Steel Track-Shoes; Removal; Installation - Komatsu PC20R-8 Shop Manual

REMOVAL AND INSTALLATION
REMOVAL OF STEEL TRACK-SHOES
1 - Rotate the track-shoe until the connecting pin (1) is
above the horizontal axis of the idler (2).
2 - Slowly loosen the grease nipple (1) to let out the
grease and release the tension of the track-shoe.
The grease contained in the idler cylinder is under
pressure and could seriously injure the Operator.
For this reason the valve should never be loosened
by more than one turn.
H If the grease does not run out easily, move the
machine slowly backwards and forwards.
3 - Using the tool A1, remove the connecting pin (1).
H First remove the safety cotter-pin.
H While dismantling the track-shoe, support the part
of the track-shoe that is wound round the idler
with a block placed under the shoe-ribbing. Once
the track shoe has been unfastened, lay it on the
ground.
4 - Keeping the horizontal end-piece of the track-shoe
raised, move the machine in order to remove the
track-shoe (4) and lay it on the ground.
5 - Push down with the boom in order to raise the lower
track-frame and pull out the track-shoe (4).
Track-shoe: PC20R-8: 159 kg
PC27R-8: 172 kg
INSTALLATION OF

STEEL TRACK-SHOES

. To install, reverse the removal procedure.
H Adjust the track-shoe tension. (For details, see
«20. CONTROLS AND ADJUSTMENTS»).
1 - Rotate the turret 90ë towards the side on which the
track-shoe is to be installed. Push down with the
boom to raise the lower track-frame.
2 - Arrange the track-shoe on the ground beneath the
bottom rollers. Lower the track-frame.
3 - Attach the first articulated joint of the sprocket wheel
and move the machine forwards until the articulated
joint is close to the sprocket wheel.
4 - Keeping the track-shoe raised, travel in order to bring
the end-piece above the idler.
5 - Install the connecting-pin using the tool A1.
6 - Install the safety cotter pin (3).
30-50
STEEL TRACK-SHOES
1
4
2
2
3
RKPA3450
3
RKP06650
PC20R-8 PC27R-8