SECTION 4 - BOOM & PLATFORM
31215031
4-19
4.11 UPRIGHT
Removal
HYDRAULIC LINES AND PORTS SHOULD BE CAPPED IMMEDIATELY AFTER DIS-
CONNECTING LINES TO AVOID ENTRY OF CONTAMINANTS INTO SYSTEM.
1.
Tag and disconnect hydraulic lines to main lift cylinder
(1). Use suitable container to retain any residual hydrau-
lic fluid. Cap hydraulic lines and ports.
2.
Support main lift cylinder using suitable lifting device.
3.
Remove bolt and keeper pin from main lift cylinder bar-
rel end pin (2). Remove pin using a suitable brass drift
and hammer.
4.
Tag and disconnect hydraulic lines to master cylinder
(3). Use a suitable container to retain any residual
hydraulic fluid. Cap hydraulic lines and ports.
5.
Remove bolt and keeper pin from master cylinder barrel
end pin (4). Remove pin using a suitable brass drift and
hammer.
6.
Disconnect wiring harness to two horizontal limit
switches (5) and dual capacity limit switch (6).
7.
Support tower upright (7) with suitable lifting device.
8.
Remove mounting hardware and hose bracket (8) from
tower upright.
9.
Remove bolt and keeper pin from upright level cylinder
(9) barrel end pin (10). Remove pin using a suitable brass
drift and hammer.
10.
Remove bolt and keeper pin from upright pivot pin (11).
Remove pin using a suitable brass drift and hammer.
Remove upright from tower boom assembly.
Installation
1.
Using suitable lifting device, position upright on tower
boom assembly so pivot holes in upright and tower
boom are aligned.
2.
Install upright pivot pin (11) into the tower boom
assembly and secure it with the mounting hardware.
3.
Using all applicable safety precautions, operate lifting
device and position upright leveling cylinder (9) so holes
in cylinder barrel end and upright structure are aligned.
Insert level cylinder pin (10), ensuring that location of
hole in pin is aligned with attach point on upright.
4.
Align main lift cylinder (1) with attach holes in upright.
Using a soft head mallet, install cylinder pin (2) and
secure with mounting hardware.
5.
Align master cylinder (3) with attach holes in upright.
Using a soft head mallet, install cylinder pin (4) and
secure with mounting hardware.
6.
Install mounting hardware and hose bracket (8) to tower
upright.
7.
Connect wiring harness to horizontal limit switch (5) and
dual capacity limit switch (6).
8.
Connect the hydraulic lines to the main boom lift cylin-
der as tagged during removal.
1
2
3
4
11
8
6
5
9
10
7
5
Figure 4-6. Tower Upright Components
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