Manitowoc Grove GRT8120, Operator'S Manual

Page: 370 / 448

5-62
Published 3-22-2021, Control # 702-02
SET-UP AND INSTALLATION GRT8120 OPERATOR MANUAL
RIGGING THE AUXILIARY SINGLE-SHEAVE
BOOM NOSE
Rigging in Transport Position
1. Remove the retaining clips and take pins (5) out of the
lugs at the front of the main boom head (Figure 5-85).
2. Rotate the auxiliary boom nose to the side of the main
boom head.
3. Insert pin (6) into lugs and secure with retaining clip.
4. Remove the retaining clip from the pin (7) and remove
the pin.
5. Rotate the auxiliary boom nose further to the side of the
main boom nose. Insert pin (8) into the lugs and secure
with the retaining clip.
Rigging in Working Position
1. Remove the retaining clip from the pin (8) and remove
the pin from the lugs.
2. Swing the auxiliary single-sheave boom nose to the front
of the main boom head so the pin (7) can be inserted
and secured with a retaining clip.
3. Remove the retaining clip and take out the pin (6).
4. Swing the auxiliary boom nose into position in front of
the main boom head. Insert pins (3) into the lugs and
secure with the retaining clips.
The auxiliary single-sheave boom nose is now in working
position.
Attaching and Removing Hoist Cable
1. Remove the cable holding rods from the head of the
main boom and from the auxiliary single-sheave boom
nose (9, Figure 5-85).
2. When reeving, guide the hoist cable over the left hand
upper sheave of the main boom.
3. Insert the rope holding rods into the appropriate bore
holes and secure them with the corresponding retaining
clips.
4. Fasten the cable end clamp on the overhaul ball or the
hook block.
Reverse the sequence of operations to remove the hoist
cable before rotating the auxiliary boom nose into transport
position.