5-64 Published 7-23-2020, Control # 668-02
SET-UP AND INSTALLATION GRT9165 OPERATOR MANUAL
Stowing the Fly Section
Use the following procedure to stow the fly section on the
boom extension base section.
NOTE: This procedure assumes the boom extension base
section and fly section are erected.
1. Remove the anti-two block switch from the end of the fly
section. For more information, see Anti-Two Block
Switch on the Boom Extension, page 5-79.
2. Unreeve the hoist rope from the fly section sheave
assembly and boom extension mast sheave
assemblies. Install the anti-two block switch on the end
of the boom extension base section. For more
information, see Anti-Two Block Switch on the Boom
Extension, page 5-79.
3. If installed, disconnect and remove wind speed indicator
and boom position light assembly from the end of the fly
section. For more information, see Anemometer/Boom
Position Light (Optional), page 5-88.
4. Attach a tag line (1, Figure 5-50) to the end of the fly
section (2). This tag line will aid in swinging the fly
section into position.
5. Remove two retaining clips (8, Figure 5-52) and pins (7).
6. Swing and stow the fly section on the boom extension
base section.
7. Secure pins (7) and retaining clips (8) in stowage
bracket (11).
8. Secure the locking bar (3, Figure 5-51) to the fly section
(4) with pin (1) and retaining clip (2).
9. Disconnect the fly section electrical connection from
base section receptacle (2, Figure 5-52). Connect the
electrical connector to the stowage receptacle (1) on the
fly section.
10. Remove the tag line from the end of the fly section.
Stowing the 17.8 m Boom Extension
Use this procedure to stow the boom extension to the side of
the main boom.
NOTE: This procedure assumes the fly section is stowed
on the boom extension base section. For more
information about stowing the fly section, see
Stowing the Fly Section, page 5-64.
1. Make sure the crane is set up on fully extended
outriggers. For more information, see Using the
Outriggers, page 4-21.
2. Make sure the counterweight is installed. For more
information about installing the counterweight, see
Counterweight Removal and Installation, page 5-12.
3. Retract and lower the boom to horizontal.
4. If necessary, adjust the boom extension offset to 0°
depending on the type of boom extension:
• If stowing a mechanical boom extension, make sure
the offset is set to 0°. For more information, see
Setting a Manual Offset Angle of 0°, 15°, 30°, or 50°,
page 5-78.
or
• If stowing an optional hydraulic boom extension,
make sure the angle indicator (1, Figure 5-53) is
aligned. If the arrows are not aligned, adjust the
boom extension offset as needed to align the
arrows. For more information, see Setting the
(Optional) Hydraulic Boom Extension Offset, page
5-79.
DANGER
When stowing the fly section, make sure that all
personnel and equipment are kept clear of the swing path.
DANGER
Boom Extension Hazard!
To avoid death or serious injury, follow procedures and
cautions in the Operator and Safety Manuals and decals
during erection, stowage and use of boom extension.
Install and secure all pins properly and control boom
extension movement at all times.
DANGER
To prevent serious injury or death, do not stand on crane
decking unless boom extension is secure.
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