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used better and it is possible to build higher
stacks. The heel kick-out can also be used as a
counterhold when handling single logs.
Basic
Basic rule:
rule:Make sure that the logs leave the grapple
without falling.
Suitable gear:
Suitable gear:
Gear selector in position
Gear selector in position
4
4
APS settings
(a)
Light (
Light (
Light
Light
) or
) or
Automatic
Automatic
Boom Suspension
Boom Suspension
System:
System:
Speed-dependent
Speed-dependent
position
position
a)For selecting APS settings, see page
45
(in the table for
"Transmission").
Picking up from a stack
Picking up from a stack
Low stack:
Low stack:
1 Keep the grapple tines flat against the ground
with the grapple fully open.
2 Enter the grapple into the stack and close the
clamping arm as far as possible.
3 Carefully reverse while closing the grapple
further.
High stack:
High stack:
1 Begin as high as possible and tilt the grapple
tines slightly forward with the grapple fully open.
2 When the grapple is well into the stack, close it.
3 Follow through with the grapple so as to avoid
logs falling down under the grapple tines.
If
If logs
logs fall
fall between
between the
the grapple
grapple tines,
tines, carefully
carefully lower
lower
the load to the ground, reverse and try to pick up
the load to the ground, reverse and try to pick up
the load again. Make sure not to damage the logs.
the load again. Make sure not to damage the logs.
A heel/kick-out makes it possible to stack the logs
higher and to keep the ground in front of the wheels
of the machine clear of logs.
Operating with tree-length logs
Operating with tree-length logs
Pay special attention that the centre of gravity of
the logs is correctly positioned to maintain a
satisfactory lateral side stability.
Make use of a signal man when operating where
visibility is limited, see page
202
.
192
192
Operating techniques
Operating techniques
Timber grapples
Timber grapples
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