Grove Published 3-25-2020, Control # 595-10 4-23
GRT8100 OPERATOR MANUAL SET-UP AND INSTALLATION
23. Retract alignment jack to its original position. Return
jack handle to its stowed position on left side of the boom
nose.
24. If required, erect the boom extension fly section by
performing the procedures under Erecting Boom
Extension Fly Section, page 4-23.
Raise and lock the mast assembly (6, Figure 4-20) into
an upright position.
a. Remove mast assembly pin from the stowed
position lug of the mast assembly.
b. Raise the mast assembly and install pin in the
upright position lug.
c. Secure with clip pin.
d. Remove cable retainer pin and clip pin from mast.
25. Extend boom until it automatically stops. Reaching this
stopping point is required for the Boom Extension
Rigging Mode process.
26. Lower boom and remove rope from tip of boom
extension base section.
27. Fully retract boom until section 1 and section 2 proximity
switches are activated. Boom Extension Rigging Mode
is complete and boom operating mode restrictions are
removed.
28. Connect the anti-two-block cable(s). Refer to
Connecting and Disconnecting Boom Extension,
page 4-32.
29. Connect hydraulic lines (if required). Refer to
Connecting and Disconnecting Boom Extension,
page 4-32.
30. If only the boom extension base section is erected,
remove cable retainer pins and clip pins from the boom
extension base section sheave.
If the boom extension fly section is erected, remove
cable retainer pins and clip pins from the boom
extension fly section sheave
NOTE: Hoist cable shall not be routed over the boom
extension base section sheave when using the
boom extension fly section.
31. Route hoist cable over mast sheave, then reinstall cable
retainer pin and secure with clip pin.
If only the boom extension base section is erected, route
cable over boom extension base section sheave, then
reinstall cable retainer pins and secure with clip pins.
If the boom extension fly section is erected, route cable
over roller at rear of boom extension fly section, then
over boom extension fly section sheave. Reinstall cable
retainer pins and secure with clip pins.
NOTE: Do not reeve hoist cable through sheaves on
boom nose.
32. Rig hoist cable.
33. If required, set manual boom extension offset to 20° or
40°. Refer to Setting Boom Extension Manual Offset,
page 4-27.
Erecting Boom Extension Fly Section
Refer to Figure 4-20.
1. Attach rope to tip of boom extension fly section to help
swing it around to the front of the boom extension
base section.
2. Ensure attachment pin securing the right side of the
boom extension base section to the boom extension fly
section is in place.
3. Position boom to horizontal.
DANGER
Do not attempt to erect the boom extension fly section
unless it was attached to the boom extension base
section during initial erection procedure.
8177-2
1
2
3
Item Description
1 Boom Extension
2 Boom Nose
3 Alignment Jack
4 Alignment Jack Handle
FIGURE 4-14
4
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