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TM 9-2320-364-20-3
2-2724
11. LOSS OF CRANE FUNCTIONS (SWING, TELESCOPE, BOOM AND HOIST) (CONT).
3.
Repair hose 2776
(Para 20-3).
Verify repair, go to
Step 15 of this Fault.
YES
NO
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 faulty.
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
Visual inspection.
A damaged, crimped or leaking
hose 2776 will bleed off
pressure supplied to four-valve
bank and pump compensator.
WARNING
Is hose 2776 free of damage,
crimps or leaks?
Read WARNING
on Page 2-2725
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