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TM 9-2320-364-20-3
2-2470
14. LHS DOES NOT UNLOAD IN AUTO MODE (CONT).
9.
Do appropriate control box
indicator lights come on?
Replace LHS control
assembly
(Para 7-40).
Verify repair, go to
Step 10 of this Fault.
YES
NO
LHS operates in MAN HA
position.
LHS operates in MAN MF
position.
Proximity switch (hook arm up)
adjustment OK.
Wire 1485 OK.
Hydraulic selector switch OK.
Wire 1461 OK.
Wire 1435 OK.
Proximity switch (hook arm up)
OK.
Wire 1466 OK.
LHS control assembly faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Visual inspection.
If HOOK ARM A SOL and
HOOK ARM A SOL LHS control
assembly indicator lights do not
come on with LHS raised
completely and joystick in
UNLOAD position, LHS control
assembly is faulty and 22 to 28
vdc will not be present at DC
valves.
WARNING
Read WARNING
on Page 2-2471
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