JLG 1500SJ Service Manual - Manual (Page 258)

SECTION 4 - BOOM & PLATFORM
4-12 – JLG Lift – 3121262
4.3 BOOM REMOVAL AND INSTALLATION
Removal
1. Remove the Jib Assembly. Refer to Section 4.6 - Jib.
2. At the rear of the turntable, tag and disconnect all
wiring harnesses that run from the powertrack to the
ground control station. The connector inside the
ground control box will have to be removed from the
wires to allow the harness to be pulled out of the
control box.
3. Have a container or absorption material ready to
catch residual hydraulic fluid. Disconnect the pres-
sure line going into the platform filter, taking care to
slowly bleed off hydraulic pressure. Cap or plug all
openings.
4. Disconnect the telescope hoses from the bottom of
the hydraulic control valve. Pull the hoses out so the
can be lifted away from the machine with the boom.
5. Have a container or absorption material ready to
catch residual hydraulic fluid. Disconnect the pres-
sure hose from the end of the main control valve.
Cap or plug all openings.