SECTION 2 - PROCEDURES
3120743
– JLG Lift –
2-13
Inspection.
1.
Inspect boom pivot pin for wear, scoring or other
damage, and for tapering or ovality. Replace pin as
necessary.
2.
Inspect upper link pins for wear, scoring or other
damage, and for tapering or ovality. Ensure pin sur-
faces are protected prior to installation. Replace pins
as necessary.
3.
Inspect inner diameter of boom pivot bushings for
scoring, distortion, wear or other damage. Replace
bushings as necessary.
4.
Inspect inner diameter of link pivot bushings for
scoring, distortion, wear or other damage. Replace
bushings as necessary.
5.
Inspect all threaded components for damage such
as stretching, thread deformation, or twisting.
Replace as necessary.
6.
Inspect structural units of boom assembly for bend-
ing, cracking, separation of welds, or other damage.
Replace boom sections as necessary.
Installation.
1.
Using suitable lifting equipment, position boom
assembly on upright so that boom pivot holes in
both boom and upright are aligned.
2.
Install boom pivot pin, ensuring that location of the
hole in pivot pin aligns with attach point on upright.
3.
Using all applicable safety precautions, operate lift-
ing equipment in order to position boom lift cylinder
so that holes in cylinder rod end and boom structure
are aligned. Insert cylinder pins.
4.
If necessary, gently tap pin into position with a soft
headed mallet, ensuring that attach hole in pin are
aligned with attach hole in boom structure. Secure
with hardware.
5.
Using suitable lifting equipment, position upper link
assembly on upright so that link pivot holes in both
link and upright are aligned.
6.
Install link pivot pin, ensuring that location of the
hole in pivot pin aligns with attach point on upright.
7.
Route the wiring harness through the boom and
install clamp.
8.
Install the platform to the boom and link assembly.
9.
Connect all wiring to control console.
10.
Using all safety precautions, operate machine sys-
tems and extend and retract boom for four or five
cycles.
11.
Shut down machine systems and check for leakage.
Removal. (Models 35/n35/40/n40/45)
1.
Remove the platform/support as follows:
a. Disconnect electrical cable from control con-
sole.
b. Using an overhead crane or suitable lifting
device, strap support the platform/support.
c. Remove hardware from pin #1. Using a suitable
brass drift and hammer, remove pin #1 from the
platform support.
d. Supporting the platform/support, remove the
hardware from pin #2. Using a suitable brass
drift and hammer, remove pin #2 from the fly
boom and remove the rotator.
e. Supporting the slave cylinder, remove the hard-
ware from pin #3. Using a suitable brass drift
and hammer, remove pin #3 from the fly boom.
f.
Tag and disconnect hydraulic lines to the slave
leveling cylinder. Use a suitable container to
retain any residual hydraulic fluid. Cap hydraulic
lines and ports. Remove the slave cylinder.
Figure 2-5. Location of Components -
Platform Support. (Models 35/n35/40/n40/45)
Property of American Airlines
