JLG X20JP - X600AJ Service Manual - Manual (Page 157)

SECTION 4 - BOOM & PLATFORM
4-4 – JLG Lift – 3121623
4. Adjust pads alternately side to side, so that fly boom
section is centered in base boom section (lower
wear pad with 1 mm gap).
5. Turn the wear pad to expose the groove on the head
to insert the cotter.
6. Disconnect auxiliary power source from telescope
cylinder.
Installation of the Boom Assembly
1. Using suitable lifting equipment, position boom
assembly on turntable so that boom pivot holes in
both boom and turntable 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 lift-
ing equipment in order to position boom lift cylinder
and level link so that holes in cylinder rod end and
level link are aligned with the one in the turntable.
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 platform to the boom assembly.
7. Connect all hosing and wiring at platform control
station.
8. Using all safety precautions, operate machine sys-
tems and extend and retract boom for four or five
cycles.
9. Shut down machine systems and check for leakage.