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TM 9-2320-364-20-4
2-3192
5. HOOK ARM EXTENDS TOO FAR IN CHU MODE (AUTO) (CONT).
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
NO
9.
WARNING
Read WARNING
on Page 2-3193
Continuity test.
Relay R52 controls the hook arm
unload function by activating
relay R51. If wire 1496 is open
between the two relays, relay
R51 will not open.
YES
Is continuity present between
wire 1496 at relay R52, termi-
nal 87 and relay R51, terminal
85?
Repair wire 1496
(see schematic
Fig 2-79) or notify DS
Maintenance. Verify
repair, go to Step 17 of
this Fault.
CHU jumper wire harness OK.
LHS operates in MAN HA
position.
LHS operates in MAN MF
position.
Proximity switch properly
adjusted.
LED of proximity switch
illuminates.
Wire 1466B of wire harness OK.
Wire 1466B OK.
Proximity switch OK
Wire 1465 OK.
Wire 1435 OK.
Wire 1495 OK.
Wire 1496 is faulty.
Relay R52 faulty.
Relay R51 faulty.
Wire 1474 of wire harness is
faulty.
Wire 1474 is faulty.
Wire 1472 is faulty.
Wire 1435 of wire harness is
faulty.
Wire 1435 is faulty.
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