BOOM RT530E-2 SERVICE MANUAL
4-6 Published 4-22-15, Control # 556-00
MAINTENANCE
Removal
NOTE: The boom may be disassembled with the base
section left on the crane if repair of the base section
is not necessary.
NOTE: The boom weighs approximately 4978 kg (10,974
lb). Removal of the boom extension will simplify
boom removal, therefore, the above weight is for
the boom without the swingaway boom extension
attached.
1. Extend and set the outriggers to level the crane and
ensure the boom is fully retracted and in a horizontal
position over the front of the crane.
2. If equipped, remove the boom extension according to
the removal procedures in this section.
3. Remove the hook block or headache ball and wind all
the wire rope onto the hoist drum.
4. Elevate the boom slightly so that the lift cylinder is
extended approximately 30.48 cm (12 in) to allow for
withdrawal of the lift cylinder rod end from the lift cylinder
attach fitting on the bottom of the boom.
5. Attach a lifting device to the boom to provide for equal
weight distribution.
6. Disconnect any electrical wiring from the boom.
7. Tag and disconnect the hydraulic lines to the telescope
cylinder. Cap or plug the lines and openings.
8. Block the lift cylinder.
9. Remove the bolt and washer securing the upper lift
cylinder shaft to the side of the attach fitting on the
boom.
10. Remove the upper lift cylinder shaft.
11. Activate the hydraulic system and withdraw the lift
cylinder rod enough to clear the attach fitting. For
removal of the lift cylinder from the crane refer to the
removal procedures outlined in LIFT CIRCUIT -
Removal in this section.
12. Take up the slack on the boom lifting device.
13. Remove the clip pin and retaining pin securing the boom
pivot shaft on the boom to the superstructure assembly.
Remove the grease fittings from the pivot shaft. Remove
the boom pivot shaft.
14. Raise the boom clear of the crane and lower to blocking
or cribbing for service.
BOOM DISASSEMBLY
NOTE: The complete boom assembly without the
swingaway boom extension attached weighs
approximately 4978 kg (10,974 lb).
1. Remove the boom in accordance with the REMOVAL
procedures outlined in this section.
2. Remove the bolts and washers securing the telescope
cylinder outer rod to the rear of the base section.
3. Remove the nuts and washers securing the
synchronizing cable ends to the base section.
Remove the Base Section
NOTE: The combined weight of the boom inner mid, outer
mid, and fly sections, including the telescope
cylinder, is approximately 3680 kg (8110 lb).
1. Remove the access cover on the top rear of the base
section. Slide the assembly out of the base section
enough to gain access to the top rear adjustable wear
pads on the inner mid.
DANGER
Wear gloves when handling wire rope.
DANGER
Ensure all blocking and lifting devices are capable of
supporting the boom assembly.
DANGER
Ensure the boom lift cylinder is properly supported before
disconnecting it from the boom.
DANGER
Shut down the crane before proceeding.
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