Komatsu PC490-11, Installation And Instruction Manual

Page: 321 / 492

4.
Set the lock lever securely to LOCK position (L).
5.
Stop the engine.
6.
Check that there is nothing around the operator's seat, and
then get off the machine.
Close the cab door and front window securely.
7.
Pass wire ropes between the 1st and 2nd track rollers from
the front and between the 1st and 2nd track rollers from
the rear.
However, for machines equipped with full roller guards for
the track rollers, pass the wire ropes under the tracks.
When the wire rope contacts with the edge of the machine,
put wooden block or backing metal between them.
8.
Set the lifting angle (A) of the wire rope to 30 to 40 °, then
sling the machine slowly.
9.
After the machine comes off the ground, check the hook
condition and the lifting posture, and then sling the ma-
chine upward slowly.
SPREAD AND NARROW TRACK FRAME GAUGE
PRECAUTIONS FOR SPREADING AND NARROWING TRACK FRAME GAUGE
k k
WARNING
• Never use the machine for operations with the track frame gauge narrowed.
• Never operate the cylinders suddenly when adjusting the track frame gauge, since doing so is dan-
gerous.
• Adjust the track frame gauge on a level hard ground.
• While the track frame gauge is narrowed, do not perform travel operation other than unloading from
a trailer.
NARROW TRACK FRAME GAUGE
Narrow the track frame gauge according to the following procedure.
OPERATION TRANSPORTATION
3-249