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TM 9-2320-364-20-3
2-2726
11. LOSS OF CRANE FUNCTIONS (SWING, TELESCOPE, BOOM AND HOIST) (CONT).
WINCH/CRANE switch in
CRANE position.
Main hydraulic reservoir full.
Outriggers operate.
Outriggers down with weight off
truck suspension.
Crane tubes and hoses OK.
Accumulator and tube OK.
Hose 2776 OK.
White jumper wire from terminal
19 to 20 faulty.
Outrigger proximity switch (RH)
faulty.
Outrigger proximity switch (LH)
faulty.
Red wire from terminal 5 to
control lockout relay faulty.
Black wire from crane terminal 1
to control lockout relay faulty.
Green wire from control lockout
relay to black wire faulty.
Control lockout relay faulty.
Blue wire from control lockout
relay to crane terminal 8 faulty.
Crane system hydraulic
pressure valve harness
connector white wire faulty.
Crane system hydraulic
pressure valve harness
connector black wire faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
NO
Go to Step 5 of this
Fault.
4.
Are 22 to 28 vdc measured at
system hydraulic pressure
valve connector, terminal 1?
Go to Step 14 of this
Fault.
If power is not supplied to crane,
crane will not operate.
WARNING
YES
Read WARNING
on Page 2-2727
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