Furukawa Unic URW370C4U Series, Operation & Maintenance Manual

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14-2
MAINTENANCE AND INSPECTION OF CRANE
Device Servicing item
Pump
Tightness of each
mounting
Oil leakage
Unusual noise
Hydraulic
oil tank Oil level
Oil leakage
Outriggers
Natural descent
Function
Control lever return
Deformation
Damage
Oil leakage
Cracks
Hoisting
winch
Function
Control lever return
Braking function
Irregular winding
Slewing
device
Function
Control lever return
Oil leakage
Derricking
boom
Function
Control lever return
Oil leakage
Mounting of foot-pin
Telescop-
ing boom
Function
Control lever return
Oil leakage
Deformation
Cracks
Mounting of
fi xing pin
Device Servicing item
Hook
Rotation of hook
Function of hook
retaining mechanism
Wire rope
Damage
Condition of rope-end
fi xing
Overwinding
alarm Function
Proper buzzer sound
Interlock
for crane-
crawl
operation
Check that crane will
not actuate on crawl-
ing, and crawler will
not travel on crawl le-
ver return and on crane
operation.
Warning
horn
Function
Piping,
Hydraulic
hose
Oil leakage
Damage
Frame
Mounting of crane
body
Cracks
Tightness of bolts
Missing bolt
Slinging
imple-
ments Items necessary for
crane operation are
provided
Device Servicing item
Automatic
storing
device for
hook
Function of automatic
stop and storing opera-
tion
Automatic
stop for
leaving
minimum
wire rope Further unwinding
stops automatically
when remaining
wire rope on the
drum comes to 3 turns.
In order to secure safe operation and improve working efficiency, be sure to inspect each part of
the crane according to the table as follows:
Inspection before operation
• Perform monthly and annual inspection according to the separate
service report.
• Keep the crawler crane in good condition so that it will be always
ready for normal operation.
CAUTION