JLG 1200SJP Service Maintenance Manual page 258

SECTION 4 - BOOM & PLATFORM
36. Attach a strap to pull the outer mid and fly boom sec-
tions out of the inner mid boom section. Secure the rear
of the inner mid boom section so it doesn't move as the
other sections are withdrawn.
37. Pull the sections out enough to allow easy removal of
the cable retainer blocks and sheave blocks for the fly
boom retract cables at the front of the inner mid boom
section.
4-24
NOTE: When pulling the outer mid and fly boom sections out of
the inner mid boom section, make sure the outer mid
retract cables do not catch at the rear of the boom section.
38. Pull the sections the rest of the way out of the inner mid
boom section, pulling the fly boom retract cables out at
the same time.
39. Remove the outer mid retract cables from the rear of the
inner mid boom section.
– JLG Lift – 3121142