Service Manual Instruction Manual

SECTION 4 - BOOM & PLATFORM
4-62 – JLG Lift – 3121171
4.23 TOWER TELESCOPE CYLINDER
Removal
1. Place the machine on a firm, level surface with the axles
fully extended or the turntable centered between the
rear wheels.
2. Select lift up and raise the tower boom until it is in a hor-
izontal position.
NOTE: The main boom must be elevated approximately 12 inches
(30 cm) above the boom rest but no more than 15° above
the tower to prevent damage to the machine. Refer to Fig-
ure 4-46., Tower Telescope Only Restrictions.
3. Support the main boom and tower boom in position
using boom props or an adequate lifting device.
4. Chain the tower mid section to the tower base section
to ensure that only the tower fly section will extend.
5. Position the Platform/Ground select switch to the
Ground position.
Figure 4-46. Tower Telescope Only Restrictions