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Page Title:
TSUM - 4-008 Jib Extension Cylinders Do Not Operate (Part 1) |
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 TM 5-5420-279-23
Jib
extension cyls do not
operate
(part 1)
Prepare for crane
operations in accordance
Is
with the operator's
No
PTO engaged
m anual
TM 5-5420-279-10
Yes
Is
Set the flow
the directional
control valve in
flow control valve in the
No
the correct
correct position for crane
position
operation
Yes
Do
End of trouble
the jib extensions
Yes
shooting
operate
No
Operator tasks
Operate
em ergency
shut-off valve
Maintainer Tasks
Electrical fault.
Carry out electrical
Do
trouble shooting on the
the jib extension cyls
Yes
crane jib extension cyl
operate
circuits see TSUM 4-011
No
Carry out electrical
check on valve control
block solenoid dump
valve see maintenance
procedure 6-075
Go to
part 2
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