JLG 1250AJP Service Manual - Manual (Page 302)

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
horizontal 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 Figure 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 sec-
tion 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