JLG 600A_AJ Service Manual - Manual (Page 225)

SECTION 5 - HYDRAULICS
3121201 – JLG Lift – 5-15
Tower Boom Lift Cylinder Removal
1. Place machine on a flat and level surface. Place the
main boom in a horizontal position with the tele-
scope cylinder fully retracted. Place the tower boom
in a fully elevated and fully retracted position (See
Figure 5-17., Boom Positioning and Support, Cylin-
der Repair.
2. Support the main boom with a prop. Support the
upright with an overhead crane. (See Figure 5-17.,
Boom Positioning and Support, Cylinder Repair.
3. Using slings restrain tower lift cylinder.
4. Remove mounting hardware securing the cylinder
rod pin to the tower boom. Using a suitable brass
drift, drive out the cylinder rod attach pin.
5. Tag, disconnect and cap the tower lift cylinder
hydraulic lines and ports.
6. Remove mounting hardware securing the cylinder
barrel pin to the turntable. Using a suitable brass
drift, drive out the cylinder barrel pin.
7. Carefully remove restraining slings and remove
tower lift cylinder from turntable. Place in a suitable
work area.
8. If necessary, use an auxiliary power source and fully
retract lift cylinder.
Figure 5-18. Tower Telescope Cylinder Removal