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Page Title:
TSUM - 2-028 Lower Winch Function Check Part 3 |
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 TM 5-5420-279-23
TSUM - 2-028 Lower Winch Function Check Part 3
Part 3
All Maintainer Tasks
Fit pressure gauge to
TPP1 on Launch
Fram e Pilot Manifold.
Operate joystick to
lower
Fit pressure
Does
Replace valve SV5 on
gauge to TPP on
gauge read
Launch Fram e Pilot
No
Yes
Launch Fram e
588 psi (4000
Manifold. See m aintenance
Pilot Manifold
kPa)
procedure 5-122
Does
Carry out Pum p Function
gauge read greater
Check. See hydraulic trouble
Operate joystick to
No
than 1450 psi (10000
shooting chapter 2
lower
kPa)
procedure 2-030
Yes
W ARNING
CRUSH INJURY. CRUSH INJURY. BEFORE
CARRYING OUT TROUBLESHOOTING
Fit pressure
INVOLVING SV10, A SUSPENDED OR
gauge to TPP1 on
PART BUILT BRIDGE M UST BE M ADE
Launch Fram e
SAFE EITHER BY COM PLETING THE
Pilot Manifold
BUILD OPERATIONS IN BACK-UP M ODE
OR BY RETRIEVING THE BRIDGE.
CRUSH INJURY. A SUSPENDED BRIDGE
W ILL M OVE IF SV10 IS M ANUALLY
Operate joystick to pay
OPERATED AND THE CHEST PACK
out. Manually operate
RIGHT-HAND JOYSTICK IS M OVED FROM
valve SV10
THE CENTRAL POSITION CAUSING
NOTE W ARNING
ACTIVATION OF OTHER SOLENOID
VALVES.
Replace SV10 valve assem bly. See
Does
m aintenance procedure 5-104. Also
gauge read
replace sequence valve and 580 psi (4000
No
588 psi (4000
kPa) reducing valve . See m aintenance
kPa)
procedure 5-130, item s 6 and 2
Yes
Replace solenoid coil on
SV10 on Launch Fram e Pilot
Manifold. See m aintenance
procedure 5-124
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