Manitowoc Grove GMK 4100L-1, Operating Manual

Page: 826 / 1016

Rigging work
12.9 Rigging/unrigging the counterweight
12 - 80 3 302 690 en Operating manual
GMK4100L-1
2
3
.1
1.
201
7
12.9.7
Assembling counterweight combination
G
Danger of overturning when slewing with a rigged counterweight
You may only slew the superstructure with a rigged counterweight if an
outrigger span of sufficient size is rigged. You can find the required outrig-
ger span in the table in the section titled
Slewing with rigged counterweight
,
p. 12 - 97 and support the truck crane accordingly before slewing the super-
structure. This prevents the truck crane overturning when slewing.
G
Risk of accidents
Combine the counterweights with each other only in the way prescribed in
this chapter and in the
Lifting capacity table
. Other combinations are not per-
mitted.
If other versions are assembled, the truck crane is no longer protected
against overloading by the RCL.
G
Risk of crushing when setting down the counterweight sections
Make sure the helpers keep a sufficient distance away from the counter-
weight sections with any parts of their body when setting down the coun-
terweight sections.
Remove all objects from the counterweight platform that could become
jammed or crushed!
G
Risk of crushing when slewing the superstructure
The access ladders are located in the slewing range of the superstructure.
Make sure nobody uses the access ladders (helpers for example) whilst you
are lifting a section on to the counterweight platform.
G
Risk of accidents due to falling counterweight sections
Only attach the counterweight sections to the appropriate slinging points
and use lifting gear of sufficient load bearing capacity.
G
Risk of accidents due to the counterweight slipping or tipping over!
Place only the 2.7 t base plate directly on to the
rear
counterweight platform.
Always secure the base plate with the pins. By this means you will avoid
the counterweight slipping or falling down, causing serious accidents.