B
B
uckets
Working with buckets
The bucket is manoeuvred with the left and right control levers,
see page
91
. For information about the Volvo tooth system, see
page
304
.
Before beginning to dig, apply the digging brake, see page
156
.
Work with the superstructure longitudinal to the undercarriage.
The machine capacity is then utilised most efficiently.
Lower stabiliser legs/stabiliser blade for best stability.
Flo
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Float position means that the piston rod sides of the boom
cylinders are connected to the hydraulic tank when the function
is activated.
The boom can float freely and it is only the weight of the digging
equipment and the load that lowers the boom when the control
lever is moved forwards.
Use the float position when the attachment is to follow uneven
ground, for example when clearing rocks, clamshell handling and
when unloading barges and truck platforms. The float position
also provides a smoother action when emptying.
Fl
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When the boom float position switch on the right control lever,
see page
91
, has been pushed the float position symbol
appears in the IC (Instrument Cluster). Now the float position
function is preselected but not active.
When the control lever is being actuated to lower the boom the
float position becomes active. The boom can then move freely
upwards or downwards depending on the ground conditions,
when the control lever is being held in the forward position.
As long as the float position is active the cylinder piston rod
sides are connected to the tank even if the control lever is in
the neutral position.
This can be an advantage for e.g. working with a hydraulic
hammer (hydraulic breaker).
Po
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Bo
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Power Boost is used when additional power is required, e.g. when
lifting heavy objects. When Power Boost is engaged, a higher
hydraulic pressure is obtained and thereby greater digging forces.
However, the digging movements will be somewhat slower.
Power Boost remains engaged for approx. 10 seconds by default,
this time can be adjusted.
Activate Power Boost with a button on the right control lever,
see page
91
. A control lamp on the display unit lights up.
V1186171
Float position symbol
V1186172
Power boost symbol
21
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