Manitowoc National Crane NBT60L User Manual

NATIONAL CRANE Published 09-06-2019 Control # 691-01 4-25
NBT60L OPERATOR MANUAL SET-UP
4
5. While watching the display, rotate superstructure so the
boom is positioned over the rear of the crane. Pull the
House Lock handle on the console to engage the house
lock. Using the house lock will assist in aligning the
counterweights. For more information, see House Lock,
page 3-13.
The Counterweight Removal Slew Position Indicator
(yellow arrows) (1, Figure 4-19) appears in the RCL
display, which indicates the rear of the superstructure is
nearly directly above the Removable Counterweight
stowed on the carrier deck.
Ensure vertical alignment of the superstructure to
counterweight with the optional rear view camera or by
leaving the cab and performing a visual inspection. If
necessary, return to cab, retract the house lock, and
rotate superstructure until alignment is achieved.
6. Retract left and right pins (4, 5, Figure 4-20) as
necessary from the counterweight.
7. Remove left and right pins that secure the counterweight
to the carrier deck.
8. Using the counterweight control panel (Figure 4-16)
located on either side of the superstructure, lower the
counterweight cylinders. For more information, see
Lowering the Counterweight Cylinders, page 4-24.
9. Attach the counterweight to cylinders using pins (5,
Figure 4-20).
10. Using the counterweight switch panel, fully raise
counterweight cylinders. For more information, see
Raising the Counterweight Cylinders, page 4-24.
11. Secure Removable Counterweight to left and right sides
of superstructure using superstructure attachment pins
(4, Figure 4-20).
NOTE: It may be necessary to jog the cylinders up and
down to install the superstructure attachment pins.
12. Adjust three bolts (1, Figure 4-18) to level the
counterweight and eliminate any relative movement
between counterweight and superstructure. Use the jam
nuts (2, Figure 4-18) to lock the bolts into position.
FIGURE 4-17
7623-20
1
Illustration for reference only. Your
crane may be different.
DANGER
Ensure that all mounting pins are properly installed and
locked during and after operating the counterweight
removal system.
Clear all personnel from the counterweight and
superstructure area when mounting or removing the
counterweight(s).
Superstructure
2
1
FIGURE 4-18
Top
Counterweight
(3 places)
9664 9663

Manitowoc National Crane NBT60L Specifications

General

Brand	Manitowoc
Model	National Crane NBT60L
Category	Construction Equipment
Language	English