TM-5-5420-279-10
♦
Press SWING UP on tail lift pendant - If tail lift moves, solenoids are
functioning correctly.
Check SWING DOWN button. Report defective switch on tail lift
pendant to maintenance.
♦ While pressing the SWING DOWN button on tail lift pendant check for
illumination in the caps attached to the swing cylinders. If one or both of
the caps are not illuminated then suspect an electrical wiring fault. Report
electrical fault to maintenance.
Maintenance should carry out a cable continuity/cable short check on
cable.
♦ If both caps are illuminated, manually screw in one override valve while
pressing SWING DOWN switch on tail lift pendant. If the tail lift lowers,
report the defective solenoid to maintenance. If tail lift does not lower,
screw in the override knurled screw and repeat the procedure on the
opposite side. If tail lift does not lower, ensure that both override-knurled
screws are out (DO NOT fully remove knurled screws), screw both valves
knurled screws in simultaneously, if the tail lift lowers report both defective
back-up operation.
If cylinders appear to be functioning, check for any mechanical obstruction,
check all hinge points, clean and lubricate hinge points. Report defective
cylinder assembly to maintenance.
10. Remove crane pads and step ladder.
If the transport strap will not unhook, check safety latch for deformation.
Replace defective transport strap.
11. Unstrap far bank support.
If the transport strap will not unhook, check safety latch for deformation.
Replace defective transport strap.
12. Remove A-frame hinge locking pins.
Remove R clips from hinge locking pins.
If pins can not be extracted or rotated:
♦ Press and release the A-frame FOLD PARK button on the operators
panel to release pins. Use a combination of A-frame FOLD PARK and A-
frame FOLD OPEN to release the hinge pins.
WARNING
CRUSH HAZARD. DO NOT INSERT FINGERS IN PIN HOLES, WHEN CLEANING
OUT ACCUMULATED DIRT USE A SUITABLE TOOL. SEVERE INJURY CAN
RESULT IF THIS INSTRUCTION IS NOT ADHERED TO.
♦ Check pin holes for dirt build up or corrosion, clean and lubricate.
13. Unfold A-frame.
Perform standard checks.
Check all four pins are removed.
Check Operators Interface Control Enclosure for correct lights. Report any
faults to maintenance.
Check A-frame unfold cylinder mounting points to ensure pins are in place
and secure.
If A-frame unfold cylinders appear to be functioning correctly, check for any
mechanical obstruction, check all hinge points, clean and lubricate. Report
any defect to maintenance.
14. Pin A-frame at the 4 hinge points.
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