Chapter 6 Ancillary equipment
Mechanical extension booms
Danger! If extensions are overloaded with the lifting power of the
crane, the load may fall down. This creates an acute risk of fatality for
the operator and others.
After pulling out the manual extension you can read the maximum load capacity on both sides. The
maximum load capacity is also printed on the identification plate of the manual extension. This may not
be exceeded, even if the manual extension has been fully pushed in and secured.
Information! Loads that are heavier than the maximum load
capacity of the manual extension boom must be attached to the last
hydraulic extension boom.
The maximum load capacity of the manual extensions must be written on both sides of the extension
by the installer. If this specification is missing, contact your PALFINGER partner.
Pulling out/pushing in mechanical manual extensions
Danger! Always secure mechanical manual extensions properly.
Inadequately securing manual extensions, or failing to secure them, is
grossly negligent. This creates an acute risk of fatal injury.
Manual extension booms that are extended/retracted must be properly secured using original
PALFINGER connection pins and linch pins.
Danger! People standing in front of the crane boom while the
manual extension booms are extended are in acute danger to life.
The operator must stand to the side of the boom system when extending or retracting the manual
extension boom.
• Make sure that all manual extension booms are secured properly.
• Move the load arm to the set-up position.
• Turn off the crane.
• Remove the linch pin from the connecting pin, pull out connecting pin.
• Pull out the manual extension boom to the securing position.
• Put in the connection pin and secure it with the linch pin.
• Turn on the crane.
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