JLG E450A, Service And Maintenance Manual, Page: 124 / 480

SECTION 4 - BOOM & PLATFORM
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11. Slowly slide the telescope cylinder into boom assembly,
align rod end with attach point in fly section. Insert pin
and secure with retaining ring.
12. Align bolt holes at aft end of base boom section with
telescope cylinder port block. Secure telescope cylinder
with hardware.
13. Install wear pads at end of base boom section. Adjust
the adjustable wear pads to zero clearance. Adjust pads
alternately side to side, so that fly boom section is cen-
tered in base boom section.
14. Retract boom section fully. Adjust wear pads at aft end
of boom section to zero clearance. Adjust pads alter-
nately side to side, so that fly boom section is centered
in base boom section.
15. Disconnect auxiliary power source from telescope cylin-
der.
Installation
NOTE: The Main Boom weighs approximately 450lbs. (204kg).
1. Using suitable lifting equipment, position boom assem-
bly on upright so that boom pivot holes in both boom
and upright are aligned.
2. Install boom pivot pin, ensuring that location of the hole
in pivot pin aligns with attach point on upright.
3. Using all applicable safety precautions, operate lifting
equipment in order to position boom lift and master cyl-
inders so that holes in cylinder rod ends and boom
structure are aligned. Insert cylinder pins.
4. If necessary, gently tap pins into position with a soft
headed mallet, ensuring that attach holes in pins are
aligned with attach holes in boom structure. Secure with
hardware.
5. Connect all hosing and wiring.
6. Install the slave leveling cylinder to the boom assembly.
7. Install the platform to the boom assembly.
8. Connect all hosing and wiring at platform control sta-
tion.
9. Using all safety precautions, operate machine systems
and extend and retract boom for four or five cycles.
10. Shut down machine systems and check for leakage.