Lull 6K Service Manual - Manual (Page 433)

Boom and Transfer
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K 6-183
b. Remove hoses from inside outer boom section (Item 1). Cap and
tag hoses and open ports on manifold blocks.
43. Turn outer boom section over and place it upside down on work
stands.
44. (Ref. Fig. 6-198) Remove outer boom hydraulic tubes as follows:
For Models 1044C-54 (S/N 101–144 and 148) and 10K-54 S/N
101–102):
a. Remove four (4) elbows (Item 4) from auxiliary and front carriage
tilt hydraulic tubes (Items 9 and 10). Bleed any remaining oil from
tubes into a suitable container. Tag and cap tube ends and fittings.
b. Remove two (2) each nuts (Item 5), lockwashers (Item 6), and
clamps (Item 7) securing each set of hydraulic tubes to bottom of
outer boom section.
c. Loosen screws on cushion clamps (Item 8). Slide cushion clamps
out of channel and remove hydraulic tubes.
For Models 1044C-54 (S/N 145–147 and 149–) and 10K-54 (S/N
103):
a. Loosen and remove four (4) auxiliary and front carriage tilt
hydraulic tubes (Items 9 and 10) from hydraulic manifold blocks
(Item 11). Bleed any remaining oil from tubes into a suitable
container. Tag and cap hydraulic tubes and open ports on hydraulic
manifold blocks.
b. Remove two (2) each nuts (Item 5), lockwashers (Item 6), and
clamps (Item 7) securing each set of hydraulic tubes to bottom of
outer boom section.
c. Loosen screws on cushion clamps (Item 8). Slide cushion clamps
out of channel and remove hydraulic tubes.
d. Remove two (2) capscrews (Item 13) and lockwashers (Item 12)
securing each manifold block to the outer boom. Remove the
manifold blocks.
Note: If damaged, further disassembly of chain assemblies may become
necessary. If required, information on the removal and installation of
additional items such as the boom angle indicator is covered elsewhere in
this manual. Additional information of removal and installation of the boom
elevation proximity switch and the boom extension proximity switch is also
covered in this manual.
Assembly
4-Section Boom 1. Use crane, chains, and slings to lift and place outer boom section on
work stands in upside down position.
CAUTION: To avoid personal and equipment damage, make sure that
major boom components are properly supported through this
entire procedure.