Quantcast TSUM - 4-004 Lift Cylinder Does Not Retract (Part 2)

 

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TSUM - 4-004 Lift Cylinder Does Not Retract (Part 1)
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TM-5-5420-279-23 Dry Support Bridge (DSB) (NSN
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TSUM - 4-005 Lift Cylinder Extends But Retracts Without Being Operated
TM 5-5420-279-23
TSUM - 4-004 Lift Cylinder Does Not Retract (Part 2)
Lift cyl does not
retract (part 2)
All Maintainer Tasks
Does
End of trouble
Yes
lift cyl
shooting
retract
No
Connect a hydraulic pressure
gauge to the pressure gauge
test point at the crane valve
control block
Is
the gauge
reading
Renew crane valve control
working pressure of
block see m aintenance
No
4496 psi (31000 kPa) when
preocedure 6-073
the lift cyl controls
are operated
Yes
Replace pilot
operated check valve
see m aintenance
procedure 6-073
Is
End of trouble
Yes
fault
shooting
rectified
No
Replace lift cyl
load holding valve
see m aintenance
procedure 6-081
Is
End of trouble
Yes
fault
shooting
rectified
No
Replace
lift cyl brake valve see
m aintenance procedure
6-080

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