Grove Published 7-23-2020, Control # 668-02 5-57
GRT9165 OPERATOR MANUAL SET-UP AND INSTALLATION
erected, stow the fly section. For more information,
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.
NOTE: An auxiliary crane with sling is required to remove
the boom extension from the main boom.
2. Retract and lower the boom to horizontal.
3. If necessary, remove the anemometer and boom
position light. For more information, see Anemometer/
Boom Position Light (Optional), page 5-88.
4. Remove the anti-two block switch from the end of the
boom extension. For more information, see Anti-Two
Block Switch on the Boom Extension, page 5-79. Install
the anti-two block switch on the main boom nose. For
more information, see Anti-Two Block (A2B) Switch,
page 5-32.
5. Unreeve the hoist rope from the boom extension
sheaves. For more information, see Reeving the Hoist
Rope, page 5-77.
6. Using a sling attached to an auxiliary crane, attach the
auxiliary crane to the boom extension attaching points.
For more information about attaching points for the sling,
see Lifting Points, page 5-50.
7. Attach a tag line (1, Figure 5-37) to the end of the boom
extension base section (2).
8. Stow the rear mast assembly as follows:
a. Hold the handle (1, Figure 5-42) and remove the
retaining clip (2) and pin (3).
b. Lower the mast (4). Make sure the connecting point
holes are aligned.
c. Insert pin (3). Secure the pin with retaining clip (2).
9. Stow the front mast assembly as follows:
a. Hold the handle (1, Figure 5-43) of the mast sheave
assembly. Remove retaining clip (3) and pin (4).
b. Lower the mast assembly (2) until the connecting
holes are aligned.
c. Insert pin (4) and secure with retaining clip (3).
10. Disconnect and stow the boom extension electrical
connections from the main boom. For more information,
see Boom Extension and Lattice Insert Electrical
Connections, page 5-72
11. If removing a hydraulic boom extension, disconnect and
stow hydraulic connections. For more information, see
Hydraulic Boom Extension Connections, page 5-73.
12. Remove four retaining clips (6, Figure 5-40) and pins (5)
from the boom extension anchor fittings and main boom
attachment fittings. If necessary, remove the upper (7)
and lower (8) hoist rope rods and retaining clips (9) to
install the pins (5). Secure the pins (5) and retaining clips
(6) in the holder on the boom extension.
13. Raise the front mounting pin handle (1, Figure 5-38) to
unlock the boom extension installation pins. Lock the
handle with pin (2).
14. Using an impact drill and 24-inch 1/2-inch impact drill
extension, retract the boom extension installation pins.
15. Using the auxiliary crane and the tag line, remove the
boom extension from the boom nose and move the
boom extension to a suitable location.
Erecting the 17.8 m Boom Extension
Use the following procedure to erect the boom extension.
Required Tools
• 1/2 in Impact Wrench
• 24 in — 1/2 in Drive
Impact Extension
• 1/2 in Square Drive
Socket — 1/2 in
(11mm) drive 6-point
Socket
DANGER
When removing the boom extension, make sure the boom
extension is properly supported by the auxiliary crane and
the movement of the boom extension is controlled at all
times.
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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