JLG 1500SJ Service Manual - Manual (Page 147)

SECTION 3 - CHASSIS & TURNTABLE
3121262 – JLG Lift – 3-99
Turntable/Swing Bearing Removal
The following procedure was accomplished using two
overhead cranes with the jib assembly and the boom
removed prior to un-decking the turntable. For un-decking
information concerning lifting the entire upperstructure as
a unit, or removing the boom and jib assembly together
refer to Section 4 - Boom & Platform.
1. Lower the platform to the ground or onto blocking to
support the weight of the jib.
2. Tag and disconnect the electrical harnesses that run
to the jib. If necessary, loosen the guide block to
allow the harnesses and hoses to move more freely.
3. Remove the jib valve protection plate.
4. Have a container or absorption material ready to
catch residual hydraulic fluid. Tag and disconnect
the hydraulic hoses that run from the boom to the jib
control valve. It may be necessary to disconnect
additional lines to gain access to certain fittings. Cap
or plug all openings.
5. Unbolt the valve from the boom.