Mounting the Jib1.

Set the crane on fully extended outriggers in a location large enough for mounting the jib.

Warning

Do not lower the boom to an angle below 0°. This action could cause the jib to disengage and drop off.

Always make sure that both the stowing pin and pivot pin are in position before starting any operation. Without these pins in position, the jib will drop off when an operation is started.

Take the necessary precautions to ensure that nobody enters the area over which the jib will swing. Anyone standing in this area could be injured. Also check the adjacent work area for any structure or other obstruction that may present a problem when operating the jib.

The load moment indicator's control functions and the automatic stop function are deactivated when the jib set status is selected on the load moment indicator. Mount the jib carefully with no load on the crane.

When working at an elevated position, use a platform or scissor lift to prevent falling and ensure safety.

Use the attached bolts and cotter pins to secure the lock pin, rope guide pins, and stowing pin in position.

2. Take the auxiliary hook block out of stowage, and place it below the expected position of the jib tip.

3. Select the jib set status on the load moment indicator.

Warning

Do not lower the boom below 0°. This action could cause the jib to disengage and drop off. T00501

7. Hoist down with the auxiliary winch and pull the wire rope close to the jib head.

◆ To prevent the wire from being improperly wound, pull the wire rope by hand. Wear protective gloves.

4. Fully retract the boom, and lower the boom to a 0°

Always make sure that either the stowing pin or pivot pin is in position before starting any crane operation. Without these pins in position, the jib will fall off the boom when an operation is started.

8. Remove the stowing pin and swing the jib out away from the boom until it hits the stopper.

6.

Auxiliary winch wire rope

9. After making sure that the pivot pin is aligned with the pin holes in the base jib section, use the jib handle to insert the pivot pin in the pin holes.

◆ Insert the pivot pin properly; the red tape on the threaded portion should be exposed.

10. Free the set pin so that the jib can be locked by the set pin when the jib is swung forward.

13. Hold the guide rope, and swing the jib forward.

11. Attach a guide rope to the jib head.

14. Reeve the auxiliary winch wire rope around the sheaves on the upper side of the top boom section and jib, and set the rope guide pin in position.

12. Extend the boom until the jib is disengaged from the stowing bracket.

◆ When the jib is disengaged from the stowing bracket, it starts to swing forward. Prevent this motion by holding the jib in place with the guide rope.

15. Take the donut weight for the anti two block device out of stowage.

16. Reeve the auxiliary winch wire rope through the jib head sheave and the donut weight, and insert the rope guide pin.

[NOTICE]

◆ If the boom is extended or lowered in place of hoisting up by the auxiliary winch, the jib could be damaged. Use the auxiliary winch only.

18. Take in the rope slowly by operating the auxiliary winch until the connecting pin is aligned with the pin hole in the base jib section.

[NOTICE]

◆ Take care to the rope socket position when attaching it to the bracket. (See the enlarged portion of the figure.)

If positioned inversely, the rope socket hits the jib at the lower face when the auxiliary winch is operated, and the socket will be damaged.

17. Attach the rope socket to the underside jib bracket with the lock pin.

19. After making sure that the connecting pin and the pin holes in the base jib section are aligned, use the jib handle to insert the connecting pin in the pin holes.

◆ Insert the connecting pin properly; the red tape on the threaded portion should be exposed.

20. Hoist down with the auxiliary winch until the wire rope becomes slack. Remove the rope socket from the underside jib bracket.

23. Select the status for 32.2 ft (9.8 m) jib, 5° offset on the load moment indicator.

21. Hoist down with the auxiliary winch to let out the auxiliary winch wire rope. Then mount the rope socket on the auxiliary hook block.

◆ To prevent the wire rope from being improperly wound, pull the wire rope by hand. Wear protective gloves.

24. Overwind the auxiliary hook block and make sure that the anti two block device is operating properly.

25. The jib is now mounted at 32.2 ft (9.8 m) with a 5° offset angle.

◆ To change the offset angle or to extend the top jib section, see the "Changing Jib Offset Angle" and "Changing Jib Length" sections.

22.