Table of Contents
Advertisement
HIGH REACH DEMOLITION EQUIPMENT 27M
B
9. Disconnect the banked hydraulic connectors on the top of the
demolition first boom.
(A - connect; B - disconnect).
10. Disconnect the individual hydraulic connections around the
demolition first boom.
11. 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.
12. Remove the safety plates from the first boom release pins.
13. 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.
(C - closed - no power to pin;
D - open - retractable pin will operate)
14. Make sure that personnel are clear from the boom release
pins and start the engine.
Make sure that the changeover valve on the demolition first
boom is set to "Pin Retract".
(C - no power to hydraulic pins; D - power to hydraulic pins)
(Action 13). If the changeover valves are in the wrong posi-
tion, the attachment will rotate when the "retract pin" com-
mand is made.
(Step 9) Top
of boom
A
(Step 12) Both
sides of boom
Safety
Plate
WARNING
DEMOLITION DIGGING BOOM INSTALLATION
(Step 13) Both sides
of boom
C
D
7-33
Advertisement
Chapters
Table of Contents
