Komatsu PW160-7K Series, Operation And Maintenance Manual

Page: 186 / 358

OPERATIONS AND CHECKS BEFORE STARTING ENGINE OPERATION
186
PRECAUTIONS WHEN TRAVELLING UP OR DOWN HILLS
WARNING
●
When travelling, raise the bucket approx. 20 - 30 cm from
the ground.
●
Do not travel downhill with the upper carriage travelling
in the reverse direction.
●
When traveling over ridges or other obstacles, keep the
work equipment close to the ground and travel slowly.
●
It is dangerous to turn on slopes or to travel across
slopes. Always go down to a flat place to perform these
operations. It may be longer, but it will ensure safety.
●
If the machine starts to slide or loses stability, lower the
b u c k e t i m m e d i a t e l y to t h e g r o u n d a n d b r a k e t h e
machine.
●
Turning or operating the work equipment when working
on slopes may cause the machine to lose its balance and
turn over, so avoid such operations. It is particularly dan-
gerous to swing downhill when the bucket is loaded.
If such operations have to be carried out, pile soil to
make platform on the slope so that the machine can be
kept horizontal when operating.
●
Do not travel on slopes of over 20° as there is danger that
the machine may overturn. (before travelling down steep
slopes stop machine & engage low gear.)
1. When travelling down hills of more than 5° first stop, and
select Low travel mode. Release the service brake and pro-
ceed (full hydraulic braking will then be available).
2. When travelling down slopes of more than 15°, set the work
equipment in the posture shown in the figure on the right, and
lower the engine speed.
3. When travelling up a steep hill of more than 15°, set the work
equipment in the posture shown in the diagram on the right.
Precautions on slopes
● If the engine stops when the machine is on a slope, never use
the left work equipment control lever to carry out swing opera-
tions. The upper structure will swing under its own weight.
● Do not open or close the door on the cab if the machine is on
a slope. This may cause a sudden change in the door open-
ing / closing force. Always keep the door locked.
INCORRECT
CORRECT
INCORRECT CORRECT
Platform
Downhill
Uphill