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Malfunctions during crane operation
14.4 Troubleshooting
14 - 16
3 112 993 en
Operating manual GMK 6400
1
2
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7.
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3
14.4.6
Malfunctions in the telescoping mechanism
Malfunction
Cause
Solution
Telescoping mechanism not
working or malfunctioning
Telescoping mechanism off,
lamp in button lights up dimly
Dead man's switch system
not actuated.
Press dead man's switch
Emergency stop switch on
Fuses F1/1, F1/2, F1/7,
F3/1, F3/2, F3/5, F3/6 blown
Replace blown fuse;
Fuse blown on circuit board
Replace blown fuse;
Control unit faulty, error mes-
sage is displayed
Acknowledge error message
once;
persists, notify
Manitowoc
Crane Care
Fuse F3/7 blown
Replace blown fuse;
Telescopic section and tele-
scoping cylinder locking/
unlocking function not work-
ing
Faulty valve
Note the error code
p. 14 - 32 and notify
Manitowoc Crane Care
Extending function not
working
Fuse F3/3 blown
Replace blown fuse;
RCL shutdown, lamp
+
lights
up
Leave the shutdown range;
Lifting limit switch
approached, lamp
#
lights up
Leave the shutdown range,
retract boom
Retracting function not
working
Insufficient lubrication
Lubricate main boom;
à
Maintenance manual
Main boom is not steep
enough
Leave the shutdown range
and raise the boom
Telescopic section cannot be
operated by moving the con-
trol lever
Telescopic section locked
Telescoping cylinder
unlocked
Telescopic section/telescop-
ing cylinder locking function
not working
Fault in hydraulics/electrical
system
Note the error codes
and notify
Manitowoc Crane
Care
Summary of Contents for GROVE GMK 6400
Page 1: ...3 112 993 en 12 07 2013 Operating manual Part 1 Driving ...
Page 9: ...Correction sheet GMK6400 3 302 804 en 7 27 08 2018 Hook tackle Reeving A 1x ...
Page 10: ...27 08 2018 8 3 302 804 en Correction sheet GMK6400 Blank page ...
Page 12: ...06 06 2014 2 3 113 115 en Correction sheet GMK6400 Blank page ...
Page 18: ...22 01 2014 6 3 113 060 en Additional page GMK6400 Blank page ...
Page 26: ...3 112 993 en Operating manual GMK 6400 12 07 2013 Blank page ...
Page 28: ...3 112 993 en Operating manual GMK 6400 12 07 2013 ...
Page 32: ...Overview 1 4 Terms used 1 4 3 112 993 en Operating manual GMK 6400 12 07 2013 1 4 Terms used ...
Page 34: ...Overview 1 4 Terms used 1 6 3 112 993 en Operating manual GMK 6400 12 07 2013 Blank page ...
Page 64: ...3 112 993 en Operating manual GMK 6400 12 07 2013 ...
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Page 383: ...Operating manual GMK 6400 3 112 993 en 12 07 2013 8 8 Index ...
Page 384: ...3 112 993 en Operating manual GMK 6400 12 07 2013 ...
Page 386: ...Index 8 2 3 112 993 en Operating manual GMK 6400 12 07 2013 Blank page ...
Page 404: ...Index 8 20 3 112 993 en Operating manual GMK 6400 12 07 2013 ...
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Page 407: ...3 112 993 en 12 07 2013 Operating manual Part 2 Crane operation ...
Page 415: ...Correction sheet GMK6400 3 302 804 en 7 27 08 2018 Hook tackle Reeving A 1x ...
Page 416: ...27 08 2018 8 3 302 804 en Correction sheet GMK6400 Blank page ...
Page 418: ...06 06 2014 2 3 113 115 en Correction sheet GMK6400 Blank page ...
Page 424: ...22 01 2014 6 3 113 060 en Additional page GMK6400 Blank page ...
Page 432: ...3 112 993 en Operating manual GMK 6400 12 07 2013 Blank page ...
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Page 937: ...Operating manual GMK 6400 3 112 993 en 12 07 2013 15 15 Index ...
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