Swing-away lattice
3.4 Description of the rigging work
3 - 34 3 112 441 en Lattice extension operating instructions
GMK 4100/4100-L/5095
11.01.2008
3.4.4 Positions of the hydraulic connections
Before operating with the lattice extension, you must move the hydraulic
connections into the
lattice extension operation position.
Before working with the main boom for long periods of time, you must
move the hydraulic connections into the
main boom operation position to
avoid putting the hose drum under unnecessary strain.
Position for lattice extension operation
The locking device on the hose drum must be
released;
à p. 3 - 33.
• Undo the linchpins (5) and fold up the guide
sheaves (4).
• Take the strain relief out of the holder (2)
and pull the hydraulic hoses (1) towards the
main boom head.
• Attach the strain relief to the holder (3).
• Fold down the guide sheaves (4) and secure
them with the linchpins (5).
Position for main boom operation
The locking device on the hose drum must be
released;
à p. 3 - 33.
• Undo the linchpins (5) and fold up the guide
sheaves (4).
• Detach the strain relief from the holder (3)
and attach it to the holder (2).
• Fold down the guide sheaves (4) and secure
them with the linchpins (5).
G
Risk of accidents due to hydraulic hoses springing back
If you detach the strain relief after the locking device has been released, you
must not under any circumstances let go of the strain relief until it has been
re-attached. If you let go of the strain relief, the hydraulic hoses will spring
back in an uncontrolled manner due to the spring force in the hose drum
and may injure persons or damage parts of the truck crane.
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