Problem 32
Boom hinge pin cylinders will not extend or retract.
CHECKS
Does supercharge accessory supply system pressurize to 3,000 psi (207 bar) when
moving boom hinge pins switch to extend or retract position at remote controller?
POSSIBLE CAUSES
Not in setup remote mode; Faulty control valve section; Supercharge
accessory supply pump is faulty; Mechanical problem.
Yes No
Are mechanical problems present
at boom hinge pin cylinders?
Yes No
Does ACC screen VALVES, bank 3 change by 16 (hinge pin in) or bank 3 change by 32
(hinge pin out) when moving boom hinge pin switch to engage or disengage position?
Yes No
Is crane setup mode selected and confirmed?
Yes
No
Select and confirm
setup mode.
Replace cylinder or
consult dealer/factory.
Repair problem.
Are solenoids magnetized when switch position is enabled?
Yes
No
Is there voltage at solenoid valve.
Check supercharge accessory system for 3,000 psi (207 bar) when enabling switch.
Pressure Ok
Pressure not Ok
Repair or replace
control valve.
Adjust supercharge accessory supply pressure
to 3,000 psi (207 bar) when enabling switch.
Yes No
Replace solenoid
valve.
Consult dealer/
factory.
Consult dealer/
factory.
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