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Page Title:
TSUM - 4-006 Jib Cylinder Does Not Extend (Part 1) |
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 TM 5-5420-279-23
Jib cyl does not
extend (part 1)
Prepare for crane
operations in accordance
Is
No
with the operator's
PTO engaged
m anual
TM 5-5420-279-10
Yes
Is
Set the flow
the directional
control valve in
No
flow control valve in the
the correct
correct position for crane
position
operation
Yes
Does
End of trouble
Yes
jib cyl
shooting
extend
No
Operator tasks
Operate
Maintainer Tasks
em ergency
shut-off valve
Electrical fault.
Does
Carry out electrical trouble
Yes
jib cyl
shooting on the crane jib cyl
extend
circuits. See TSUM 4-011
No
Carry out electrical check on
valve control block solenoid
dum p valve. See
m aintenance procedure
6-075
Go to
part 2
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