SECTION 4 - BOOM & PLATFORM
4-22
31215031
Installation
1.
Position tower boom assembly on turntable using a suit-
able lifting device. Align pivot holes in boom and turnta-
ble.
2.
Install tower boom pivot pin #1. Ensure location of hole
in pin is aligned with attach point on turntable.
3.
If necessary, gently tap pin into position with soft
headed mallet. Secure pin mounting hardware.
4.
Using all applicable safety precautions, operate lifting
device and position lower boom lift cylinder so holes in
cylinder rod end and tower boom structure are aligned.
Insert lift cylinder pin #2, ensuring that location of hole
in pin is aligned with attach point on tower boom.
5.
Connect all wiring connections at ground controls.
6.
Connect all hydraulic lines running from aft end of tower
boom assembly to ground controls.
Figure 4-10. Tower Boom Components
4.13 JIB ASSEMBLY
Refer to Figure 4-11., Jib Assembly.
Removal
NOTE:
Support the jib using a suitable lifting device.
1.
For platform and support removal see Section 4.1, Plat-
form Control Enable System.
2.
Position the articulating jib boom level with ground.
HYDRAULIC LINES AND PORTS SHOULD BE CAPPED IMMEDIATELY AFTER DIS-
CONNECTING LINES TO AVOID ENTRY OF CONTAMINANTS INTO SYSTEM.
3.
Tag and disconnect hydraulic lines from level cylinder
and jib lift cylinder. Use suitable container to retain any
residual hydraulic fluid. Cap hydraulic lines and ports.
4.
Remove mounting hardware from slave leveling cylin-
der pin #1. Using a suitable brass drift and hammer,
remove the cylinder pin from jib assembly.
5.
Remove mounting hardware from jib assembly boom
pivot pin #2. Using a suitable brass drift and hammer,
remove the pivot pin from boom assembly.
Disassembly
1.
Remove mounting hardware from jib boom pivot pins
#3 and #4. Using a suitable brass drift and hammer,
remove the pins from articulating jib boom pivot weld-
ment.
2.
Remove mounting hardware from rotator support pins
#5 and #6. Using a suitable brass drift and hammer,
remove the pins from rotator support.
1
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