JLG 1250AJP Service Manual - Manual (Page 323)

SECTION 4 - BOOM & PLATFORM
3121171 – JLG Lift – 4-83
18. Telescope the main boom out until the retaining pin
at the end of the telescope cylinder rod can be
accessed.
19. Place blocking or boom supports under the main
boom to support it.
20. Place blocking under the main lift cylinder to support
it.
21. Place blocking under the lower link to support it.
22. Remove the shoulder screws, retaining rings, and
pin securing the end of the telescope cylinder.
23. Remove the bolts securing the rear boom cover and
remove the cover.
24. Place blocking under the telescope cylinder to pre-
vent it from falling when the retaining pin is removed.
25. Remove the bolt and keeper pin securing the retain-
ing pin in place. Remove the retaining pin.
26. Tag and disconnect the hydraulic lines running to
the telescope cylinder. Cap or plug all openings.