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BOOM AND WINCH INSTALLATION (Cont) - TM-9-2350-238-20-20067
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TM-9-2350-238-20-2 Crane (CAB) Components Recovery Vehicle Full-Tracked: Light Armored M578 (
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BOOM AND WINCH INSTALLATION (Cont) - TM-9-2350-238-20-20069
TM
9-2350-238-20-2
2-10.
ELECTRICAL
CIRCUIT
TROUBLESHOOTING
(CONT).
Step 3. Remove vehicle equipment stowage box for access to rectifier (1), refer to
page  2-330.  Disconnect  lead  480  (2)  from  solenoid  pressure  relief  valve  to
rectifier. Place red probe in lead 480. Ground black probe. Set MASTER
switch ON. Set LEVEL WIND switch ON. Press sensing switch of in-
operative  traversing  circuit  to  close.  If  multimeter  indicates  about  24  volts,
go to step 4. If multimeter indicates no voltage, go to step 6. Set MASTER
switch  OFF.  Set  LEVEL  WIND  switch  OFF.  Connect  lead.
Make
sure
MASTER
switch
is
OFF
before
repairing
electrical
com-
ponents. Failure to observe this warning could result in injury to
personnel.
Step 4 .
Disconnect
connector
(1)
from
directional
control
valve
(2)
of
in-
operative traversing circuit. Place red probe in socket A (3) (lead 480).
Ground  black  probe.  Set  MASTER  switch  ON.  Set  LEVEL  WIND  switch  ON.
Press  sensing  switch  of  inoperative  traversing  circuit  to  close.  If  multimeter
indicates about 24 volts, go to step 5. If multimeter indicates no voltage,
repair lead 480 between solenoid pressure relief valve and rectifier, refer to
page  2-66.  Set  MASTER  switch  OFF.  Set  LEVEL  WIND  switch  OFF.  Con-
nect  connector.
2-28

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