Komatsu PC350LC-8, Operation & Maintenance Manual

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TRANSPORTATION
HIGH REACH DEMOLITION MANUAL
7-52
15. Disconnect the banked hydraulic connectors on the top of the
demolition first boom.
(A - connect; B - disconnect).
16. Disconnect the individual hydraulic connections around the
demolition first boom.
17. Separate the grease hoses and protect the exposed ends in
the same way as the main hydraulic lines. Plug the open end
of the tube with end fittings (heads), supplied as loose parts
with the machine.
18. Remove the safety plates from the first boom release pins.
19. Open the valves on the pin retract circuit (left and right side of
the demolition first boom) to allow hydraulic pressure to be
applied to the retractable pins.
20. Make sure that personnel are clear from the boom release
pins and start the engine.
21. Operate the "Attachment Rotate" function. Forward propor-
tional button makes the pins retract. Reverse proportional
button makes the pins extend.
CAUTION
Check that the pins are fully retracted before moving the
machine.
22. Carefully lower the first boom section to settle stand B onto
the trailer. Then simultaneously lower the first boom and
reverse the machine away from the demolition equipment, to
disengage the upper pin.
(Step 15) Top
(Step 19) Both sides
of boom
of boom
(Step 18) Both
sides of boom
A
B
C
D
Safety
Plate
c
21
11
12
22b) SLOWLY!
22a) lower boom
B
A