Manitowoc GROVE RT890E Operator's Manual page 74

SET-UP AND INSTALLATION
18. Move the lifting limit switch from the head of the main
boom to the head of the 33 ft (10.1 m) section.
19. Reeve the hoist cable on the hook block.
20. Attach the lifting limit switch weight and guide hoist rope
through the weight.
Checklist: Unrigging the 33 Ft (10.1 m)
Swingaway Lattice Extension
1. Prepare the crane for unrigging.
2. Retract the main boom completely and lower it into the
horizontal position.
3. Remove the lifting limit switch weight and move lifting
limit switch from the head of the 33 ft (10.1 m) section to
the head of the main boom.
4-12
4. Unreeve the hoist cable from the hook block and remove
it from the lattice extension.
5. Fold in both deflection sheaves on the 33 ft (10.1 m)
section.
6. Reel hoist cable up to the main boom head.
7. Attach the guide rope to the head of the 33 ft (10.1 m)
section.
8. Remove the left-hand locking pin between the 33 ft (10.1
m) section and the main boom head.
9. Raise the main boom completely.
10. Swing the 33 ft (10.1 m) section onto the main boom.
11. Lower the lattice extension so that it is positioned on the
run-up rail.
12. Establish the connection in the front area.
RT890E