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TM 9-2320-364-20-4
2-3186
5. HOOK ARM EXTENDS TOO FAR IN CHU MODE (AUTO) (CONT).
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
NO
6.
WARNING
Read WARNING
on Page 2-3187
Continuity test.
Relay R52 controls the hook arm
extend function in AUTO mode.
The power supply to relay R52 is
from wire 1465. Relay will not
function if there is an open in
wire 1465.
YES
Is continuity present between
wire 1465 at connector
MC82A, terminal A and relay
R52, terminal 86?
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 is faulty.
Wire 1435 is faulty.
Wire 1495 is faulty.
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.
Repair wire 1465
(see schematic
Fig 2-79) or notify DS
Maintenance. Verify
repair, go to Step 17 of
this Fault.
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