SECTION 2 - PROCEDURES
3120743
– JLG Lift –
2-15
Disassembly Boom Sections.
1.
Loosen jam nuts on aft end of fly boom wear pad
adjustment and loosen adjustments.
2.
Using a portable power source, attach hose to tele-
scope cylinder port block. Using all applicable
safety precautions, activate hydraulic system and
extend cylinder rod pin #1. Shut down hydraulic
system.
3.
Carefully disconnect hydraulic hose from retract port
of cylinder. There will be initial weeping of hydraulic
fluid which can be caught in a suitable container.
After initial discharge, there should be no further
leakage from the retract port.
4.
Remove hardware securing telescope cylinder #1 to
the fly boom section, then remove pin from fly.
5.
Remove hardware securing telescope cylinder to
the base boom section.
WHEN REMOVING TELESCOPE CYLINDER FROM BOOM SEC-
TIONS. CARE SHOULD BE TAKEN NOT TO LEAVE CYLINDER
REST ON POWERTRACK WHICH COULD CAUSE DAMAGE TO
POWERTRACK.
6.
Using a suitable lifting device, remove telescope cyl-
inder from boom sections.
7.
Using a piece of tape, mark the length of hoses and
wires from front of fly boom and bottom of base
boom for reassembly.
8.
Remove hardware securing the front cover on base
boom section.
9.
Loosen jam nuts on front wear pad adjustments and
loosen adjustments.
10.
Remove hardware securing the front wear pads on
base boom section, remove wear pads.
1.
Remove wire clamp on the inside of the fly nose.
2.
Manually push the fly boom section into base boom
section to gain access to the powertrack attachment
bolts on the right side of the base boom section.
3.
Remove hardware securing the powertrack to the aft
end of the fly boom section.
4.
Using a suitable lifting device, remove fly boom from
boom section.
5.
Remove hydraulic lines and electrical cables from
powertrack.
6.
Remove hardware securing powertrack to the base
boom section. Remove powertrack.
Figure 2-8. Location of Components - Aft End of Fly
Boom Wear Pad Adjustments.
Figure 2-9. Location of Components - Removal of Tele-
scope Cylinder.
Figure 2-10. Location of Components - Front Base
Boom Wear Pad Adjustments.
Property of American Airlines
