User Manual

SECTION 2 - PROCEDURES
2-20 – JLG Lift – 3120884
7. Using a piece of tape, mark the length of hoses and
wires from front of fly boom and bottom of base
boom for reassembly.
8. Remove hardware securing the front cover on base
boom section.
9. Lo ose n jam nuts on front wear pad a dju st me nts and
loosen adjustments.
10. Remove hardware securing the front wear pads on
base boom section, remove wear pads.
11. Remove wire clamp o n the insi de of the fly nose.
12. Manually push the fly boom section into base boom
section to gain a ccess to the power t r a ck atta chment
bolts on t he right side of t he base boom section.
13. Remove hardware securing the powertrack to the aft
end of the fly boom section.
14. Using a suitable lifting device, remove fly boom from
boom section.
15. Remove hydraulic lines and electrical cables from
powertrack.
16. Remove hardware securing powertrack to the base
boom section. Remove powertrack.
Inspection
1. Inspect boom pivot pin for wear, scoring or other
damage, and for tapering or ovality. Replace pin as
necessary.
2. Inspect lift and master cylinder pins for wear, scoring
or other damage, and for tapering or ovality. Ensure
pin surfaces are protected prior to installation.
Replace pin s as neces s ary.
3. Inspect telescope cylinder rod attach pin for wear,
scoring or other damage. Replace pin as necessary.
4. Inspect inner diameter of boom pivot bushings for
scoring, distortion, wear or other damage. Replace
bushings as necessary.
5. Inspect wear pads for wear as shown in Section 2.9,
Wear Pa ds.
6. Inspect all threaded components for damage such
as stretching, thread deformation, or twisting.
Replace as ne cess ary.
7. Inspect struct ural units of boom assembly for bend-
ing, cracking , separation of welds, or oth e r damage.
Replace boom sections as necessary.
Assembly
1. Install power track to the attach point on the inside
of the base boom section. Secure power track with
hardware.
2. Install hydraulic lines and electrical cables into the
power track.
3. Install wear pads to the aft end of th e fly section.
4. Using suitable lifting equipment, slide fly section into
the base s ectio n un til powe r track a ttach po int alig ns
with holes in side of base section.
5. Attach the power track to the aft end of fly boom
section. Secure power track with hardware.