SET-UP NBT30H-2 OPERATOR MANUAL
4-6
Published 03-18-2019 Control # 582-04
10. Using telescope function, slowly extend boom
approximately one foot. This procedure will pull the
extension out of the side stow bracket.
11. Using tag line, swing extension into deployed position.
12. Pivot extension into place, visually aligning the upper C2
pin holes. Install upper C2 pin and spring clip. A slight
hammer strike may be necessary to install pins.
13. Using extension jack, position extension so that lower
C2 pin holes are in alignment and install lower C2 pin
and spring clip.
a. Remove the jack handle and check that the jack
release valve is closed.
b. Extend the jack so that the lower C2 pin holes are
aligned.
c. Install the lower C2 pin and spring clip.
d. Open the jack release valve and retract the jack.
14. Using hoist function, unspool enough loadline to reeve
loadline over extension sheave case. Keep slight
tension on loadline to avoid bird caging of loadline on
hoist drum.
15. Route loadline over extension sheave and install keeper.
Install line block to end of loadline.
16. Remove anti-two-block switch and weight/chain
assembly and install on extension tip. Be certain to use
keeper provided with switch.
17. Disconnect twist lock quick coupler on anti-two- block
cord going to boom anti-two-block switch and attach to
quick coupler on extension anti-two-block wire on rear of
extension between the upper and lower extension ears.
18. Install extension swing pin B and spring clip into
extension ears.
19. For manually extendable extensions, pull extension
retaining pin E, and extend second section out by pulling
on sheave case. The second section extension, as it
extends, will hit a mechanical stop that allows for
extension pin E installation. Install pin E and spring clip.
20. Make A2B connections as required.
Stowing Procedure
1. Using lift function, lower boom so that extension
deployment pins C1 and C2 are easily accessible from
the ground.
NOTE: When lowering the boom below horizontal, two
persons may be required. With the telescope
control in neutral, the boom may creep out when
below horizontal.
2. For manually extendable extensions, pull extension
retaining pin and fully retract extendable 2
nd
section
extension into the 1
st
section. Retraction of 2
nd
section
may be facilitated by attaching loadline wedge socket to
extension nose. Slowly activate the hoist up function
until the 2
nd
section is fully retracted.
3. Reinstall extension retaining pin through the 1
st
and 2
nd
section extension assembly and install spring clip.
4. Remove loadline from extension sheave case. Place
loadline in area to avoid possible damage from stow
procedure.
WARNING
Crushing Hazard!
Use caution when swinging extension into deployed
position. The extension is free to swing away from the
boom upon boom extension.
CAUTION
Eye Injury Hazard!
Use safety glasses when striking pins with a hammer.
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