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Malfunctions during crane operation
14.6 Hydraulic emergency operation with the hand pump
Operating manual
3 302 709 en
14 - 53
GMK5150L
1
2
.0
1.
201
8
14.6.3
Establishing the hydraulic circuits required
You must switch over the necessary valves to establish a hydraulic circuit.
The valves
1
to
3
are secured against unintentional switching over.
Releasing/
securing valves
Releasing/securing is described for a valve. The procedure is identical for
valves
1
to
3
.
Release – for the emergency operation
•
Unscrew the handle (
1
).
•
Move the disc (
2
) to position
A.
•
Fasten the handle (
1
).
Rigging – for crane operation
The valve must be closed.
•
Unscrew the handle (
1
).
•
Move the disc (
2
) to position
B.
•
Fasten the handle (
1
).
s
S
Danger due to operating error
Following emergency operation, secure the valves
1
to
3
in position
B
again
for crane operation
.
This prevents uncontrolled crane movements when switching the crane's
hydraulic system on.
Summary of Contents for GROVE GMK5150L
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Page 6: ...12 01 2018 2 3 302 706 en Additional page GMK Blank page ...
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Page 12: ...22 11 2018 4 3 302 834 en us Correction sheet GMK5150 GMK5150L Blank page ...
Page 14: ...28 11 2018 2 3 302 839 en Additional pages GMK Blank page ...
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Page 45: ...Operating manual 3 302 709 en GMK5150L 12 01 2018 15 15 Index ...
Page 46: ...3 302 709 en Operating manual GMK5150L 12 01 2018 ...
Page 48: ...Overview 1 1 Accidents 1 2 3 302 709 en Operating manual GMK5150L 12 01 2018 Blank page ...
Page 50: ...Overview 1 4 Terms used 1 4 3 302 709 en Operating manual GMK5150L 12 01 2018 1 4 Terms used ...
Page 52: ...Overview 1 4 Terms used 1 6 3 302 709 en Operating manual GMK5150L 12 01 2018 Blank page ...
Page 1020: ...Index 15 2 3 302 709 en Operating manual GMK5150L 12 01 2018 Blank page ...
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