Quantcast TSUM - 3-017 Carriage Drive Failure (Level Bank Drive In) Part 1

 

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TSUM - 3-016 Beam Drive (Drive In) (99) Part 2
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TM-5-5420-279-23 Dry Support Bridge (DSB) (NSN
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TSUM - 3-017 Carriage Drive Failure (Level Bank Drive In) Part 2
TM 5-5420-279-23
TSUM - 3-017 Carriage Drive Failure (Level Bank Drive In) Part 1
Carriage will not drive in
(Level Bank)
W ARNING
For the Carriage to drive in (Level Bank) the following
prerequisite conditions m ust be m et:
CRUSH INJURY. BEFORE CARRYING OUT
* Neutral gear selected
TROUBLESHOOTING INVOLVING SV10, A
* Parking brake applied
SUSPENDED OR PART BUILT BRIDGE M UST
* Tail Lift Pendant connected & powered
BE M ADE SAFE EITHER BY COM PLETING THE
* Chest Pack connected & powered
BUILD OPERATIONS IN BACK-UP M ODE OR
* 4 Position Switch at position 4
BY RETRIEVING THE BRIDGE.
* Ensure E-STOP RESET satisfactory
* A-Fram e unfolded
CRUSH INJURY. A SUSPENDED BRIDGE W ILL
* A-Fram e rotated
M OVE IF SV10 IS M ANUALLY OPERATED AND
* Slide Fram e extended
THE CHEST PACK RIGHT-HAND JOYSTICK IS
* Relax Pins withdrawn & Lim it Switches closed
M OVED FROM THE CENTRAL POSITION
* Chest Pack in Carriage Drive Level Bank m ode
CAUSING ACTIVATION OF OTHER SOLENOID
* RH Joystick m oved backward from centre
VALVES.
Power down &
Are the
Perform
replace defective
following Mim ic
lam p test on
Mim ic Panel.
No
No
Panel captions lit?-PV1a,
Mim ic Panel.
To replace Electrical
SV5, SV6, SV7, SV10 (see
Are all lam ps
Enclosure see
W ARNING), SV13a &
lit?
m aintenance
SV14a
procedure 5-049
Yes
Yes
Are the
Disconnect
following solenoid
Insert probes of DMM
connectors from
No
connector LEDs lit?- SV5,
into sockets 1 & 2 of
listed solenoids.
SV6, SV7, SV10 (see
each connector
See m aint procedure
W ARNING), SV13a
5-141
NOTE
& SV14a
Solenoids SV5, SV6, SV7 &
SV10 are located on the
Launch Fram e Pilot
Yes
Manifold. Solenoids SV13a,
SV14a are located on the
Launch Fram e W inch
Disconnect solenoid
Control Manifold
Replace solenoid
connectors from above listed
Is 24V
harness if connector
solenoids. See m aint
Yes
solenoid supply
LED not lit. See
procedure 5-141. Connect
m aintenance
present?
DMM across solenoid coil
procedure 5-139
pins. See resistance check in
m aint procedure 5-124
No
Replace faulty harness
Power down & check
or Launch Fram e Enclosure as
harness continuity from
appropriate using the following
listed solenoids to
Go to
m aintenance procedures:-
Launch Fram e
Part 2
Harness 5-139
Enclosure using the
Launch Fram e Enclosure
cable routing tables in
5-049
section 3.6 of Chapter 3

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