Assembly and
Dismantling
Operator’s Manual for Crawler Crane
5-4
5.1.3.4 Checking anchoring rods
a) The anchoring rods should be secured well on boom frame during transportation.
b) The anchoring rods, if removed from boom frame for transportation, must be re-assembled
according to anchoring rods configuration.
c) Check the anchoring rods for cracks, wear and corrosion.
d) The anchoring rods should be checked regularly. For the items to be checked, please refer
to the relevant sections in Maintenance Manual.
5.1.4 Connecting or disconnecting the hydraulic lines with quick-release
couplings
When hydraulic lines are connected or disconnected using quick-release couplings please
ensure that the coupling procedure is being performed correctly.
Requirements for a proper connection:
a) Depressurize hydraulic system before connecting and disconnecting (switch off the engine
and wait for about 5 minutes).
b) Coupling parts (male end and female end) are plugged into each other and screwed
together using the hand-tightened nut.
c) Turn the hand-tightened nut over the O-ring until a firm and tight fit is attained.
d) The hydraulic couplings may only be tightened or unscrewed by hand rather than by tools
which may cause damage to couplings.
Improperly connected couplings may lead to a loss of pressure or sudden leaking,
thereby causing accidents.
5.1.5 Erecting and lowering the boom
Before erecting and lowering the boom, ensure that the following prerequisites are met:
a) The crane is properly supported and leveled.
b) The counterweight plates have been attached in accordance with the load capacity chart.
c) All limit switches have been correctly fitted and are fully operational.
d) The main boom and jib have been attached in accordance with the boom configurations
and operating instructions.
e) All pinned connections have been secured.
f) The hoisting rope has been correctly placed in the rope pulleys and prevented from
jumping out (from rope groove) using rope retaining pins.
g) There are no loose parts on main boom or jib.
h) In winter, the main boom, jib and associated components (limit switches, rope drums,
warning lamp, anemometer etc.) must be kept free of ice and snow.
DANGER
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