JLG 1250AJP Service Manual - Manual (Page 308)

SECTION 4 - BOOM & PLATFORM
4-68 – JLG Lift – 3121171
4.24 TOWER LIFT 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 4-47., Tower Lift Only
Restrictions.
3. Position the Platform/Ground select switch to the
Ground position.
4. If the Boom Control System allows tower telescope,
skip to step 18. If not, continue with step 6.
5. Plug the analyzer into the connector inside the
Ground control box.
6. Pull out the Emergency Stop switch and start the
engine.
Figure 4-47. Tower Lift Only Restrictions