Komatsu PC490-11, Инструкция по установке и эксплуатации

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Track on one side stuck
NOTICE
When using the boom or arm to raise the machine, push
the ground by using the bottom of the bucket.
At this time, set the angle between the boom and the arm
at 90° to 110° and lower the bucket bottom surface to the
ground.
The same applies when using the bucket installed in the
reverse direction.
When only one side is stuck in mud, raise the track by lowering
the bucket to the ground on the stuck side. Lay boards or logs
under the raised track. Then raise the bucket and drive the ma-
chine out.
Tracks on both sides stuck
When the tracks on both sides get stuck and slip, lay logs,
wooden blocks, etc. according to the preceding procedure.
Stick the bucket into the front ground, pull in the arm as in dig-
ging operation, and set the travel lever to FORWARD position
to drive the machine out.
RECOMMENDED APPLICATIONS
In addition to the following, it is possible to further increase the range of applications by using various attach-
ments.
DIGGING WORK
BACKHOE WORK
It is suitable for excavating areas that are lower than the machine.
When the condition of the machine is as shown in the figure
(angle between bucket cylinder and link, and between arm cyl-
inder and arm is 90 °), the maximum excavation force is ob-
tained from the pushing force of each cylinder.
When excavating, you can optimize your working efficiency by
using this angle effectively.
The range for excavating with the arm is from a 45 ° angle
away from the machine to a 30 ° angle towards the machine.
There may be some differences depending on the excavation
depth, but try to stay within the above range rather than operat-
ing the cylinder to the end of its stroke.
OPERATION MACHINE OPERATIONS AND CONTROLS
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