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Page Title:
TSUM - 4-004 Lift Cylinder Does Not Retract (Part 1) |
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 TM 5-5420-279-23
LIft cyl does not
retract (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
lift cyl
shooting
retract
No
Operator tasks
Operate
em ergency
Maintainer Tasks
shut-off valve
Electrical fault.
Carry out electrical
Does
trouble shooting on the
lift cyl
Yes
crane lift cyl circuits. See
retract
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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