Lull 6K Service Manual - Manual (Page 489)

Boom and Transfer
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K 6-239
d. Install the two (2) slide blocks (Item 4) to the front of the transfer
carriage with four (4) each capscrews, (Item 3) lockwashers
(Item 2), and nuts (Item 1). Torque the nuts to 130 ft-lbs.
e. Install the boom as described elsewhere in this section.
f. Install the rear carriage tilt cylinder (See page 6-25).
g. Install the boom hoist cylinder (See page 6-13).
4. (Ref. Fig. 6-249) Reconnect hydraulic hoses (Item 1) to the hydraulic
tube elbows. Torque the swivel nuts on the hoses 79–88 ft-lbs.
5. (Ref. Fig. 6-249) Install the hose cover (Item 2) on the transfer carriage
with four (4) each capscrews (Item 4) and lockwashers (Item 3).
Torque the capscrews to 75 in-lbs.
6. Install boom elevation proximity switch as follows (Ref. Fig. 6-246):
a. Work the wiring harness along the hydraulic tubes on the boom
cradle.
b. Reconnect connection wire to boom proximity switch and wiring
harness.
c. Secure wiring harness to hydraulic tubes with wire ties.
7. (Ref. Fig. 6-248) For models with a 4-section boom, install the boom
extension proximity switch as follows:
a. Work the wiring harness along the hydraulic tubes on the boom
cradle and up to the top of the boom.
b. Connect the proximity switch connection wire (Item 6) to the
proximity switch (Item 7) and the wiring harness (Item 5).
c. Secure the wiring harness and switch connection wire to the boom
with six (6) each (five on top of the boom and one inside of the
back left side of the boom) nuts (Item 4), lockwashers, (Item 3),
flatwashers (Item 2), and J-clamps (Item 1). Tighten nuts until
snug.
d. Secure the wire harness to the hydraulic tubes and hoses with wire
tires.
8. (Ref. Fig. 6-247) Install the boom cover on models with 3-section (see
Step a) or 4-section booms (see Step b).
a. Install boom cover (Item 4) on boom and secure it with four (4)
each flatwashers (Item 2), lockwashers (Item 1), and nuts (Item 3).
Torque nuts to 180 in-lbs.
b. Install boom cover (Item 4) on boom and secure it with six (6) each
flatwashers (Item 2), lockwashers (Item 1), and nuts (Item 3).
Torque nuts to 180 in-lbs.
Shims and Bushings
Boom Cradle The following procedures describe shimming procedures and replacement
of worn or damaged bushings.