Stowing the Single Top

Warning

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

Stow the single top securely. Use the attached bolts, cotter pins and rings to ensure that the stowing pin, connecting pins, rope guide pins, and hook mounting pins do not slip out of position.

1. Stow the auxiliary hook block in its stowing position.

2. Take the rope socket out from the auxiliary hook block.

5. Reeve the auxiliary winch wire rope through the rope arresters.

3. Lower the boom all the way down.

4. Remove the weight for the anti two block device and remove the auxiliary winch wire rope from the sheaves of the boom head and single top.

◆ Place the rope guide pin on the original position.

6. Attach the rope socket to the anchor on the jib.

7. Wind the auxiliary winch wire rope, leaving it slightly slack.

[NOTICE]

◆ Operate the auxiliary winch carefully. If the wire rope is wound too tight, the anchor will be broken.

8. Connect and disconnect the leads of the anti two block device as shown.

9. Remove the anti two block device and return it to its stowing position at the head of the jib.

12. Select the boom lift status on the load moment indicator.

10. Remove the connecting pin and swing the single top back to its stowing position.

13. Raise the main hook block and make sure that the anti two block device is operating normally.

11. Insert the stowing pin to secure the single top.

Warning

Install the crane on firm ground and level extending the outriggers.

Extend the outriggers as far as possible.

Do not fail to make sure the auxiliary winch wire rope is not wound disorderly on the drum.

Before jib operation, register jib operation on the load moment indicator.

[NOTICE]

◆ When you mount or stow the jib with the antitwoblock function deactivated, operation will not be stopped even if the hook block is overwound. Twoblocking damages the crane and can cause serious personal injury or death. Be sure not to overwind when mounting or stowing the jib.

◆ The jib will be damaged if it is mounted or stowed in an incorrect sequence. To mount and stow the jib, follow the procedure given in the chart below.

Mounting JibStowing Jib

1. Mount the jib.1. Retract the jib.

2. Change the jib offset2. Return the jib offset angle.angle to 5°

3. Extend the jib.3. Stow the jib.

The jib is mounted on the boom head and is used for lifting a relatively light load to a higher location. Two jib offset angles (5° and 30°) are available, depending on the operation to be performed. Use of the jib is limited to hoisting operations with the auxiliary hoist, auxiliary winch wire rope and auxiliary hook block.

How to Use the Jib Handle

Use the jib handle for the following purposes when mounting or stowing the jib.

(1)Mounting and removing the pivot pin and connecting pin

(2)Setting and removing the set pin

(3)Reeving wire rope

Pivot pin and connecting pin Set pin Reeving wire rope