Removal and Installation of Counterweight

Caution ・ Be sure to stop the engine before beginning work. ・ Be sure to inspect the wire rope and other lifting equipment before beginning work. ・ Do not stand or pass under the suspended load. ・ Thoroughly secure the removed counterweight with the wire ropes and crane so that it does not fall over.

Items to prepare •Box wrench (50 mm) •Eyebolts (M36 mm) •Balance lifting device •Shackle (with the required lifting capacity) x 4 •Wire rope (with the required breaking load) x 4 •Crane (with the required lifting capacity) •Wood planks, etc. •Rag •Cleaning fluid 1.Removal of Counterweight [1] Remove the 2 rubber plugs (2) from the top of the counterweight (1).

[2] Install the 2 eyebolts (M36) (3) in place of the 2 removed rubber plugs. •Apply lubricating oil to the eyebolts. •Fully tighten the eyebolts, and then loosen them by a half turn.

1 Counterweight 2 Rubber plug 3 Eyebolt

[3] Connect the eyebolts to the shackles (4), and then use the wire ropes (5) and crane to secure the counterweight so that it does not fall during removal and installation operations.

[4] Use a box wrench (50 mm) to remove the 4 bolts (6) and spacers (7) on the lower section of the counterweight.

4 Shackle 5 Wire rope 6 Bolt 7 Spacer

[5] Use the wire ropes and crane to lift and remove the counterweight. •Move the counterweight about 50 cm to the rear while lifting it so that it does not interfere with the housing, engine parts and pipes.

[6] Thoroughly check that the location is safe before lowering the counterweight on wood planks (8). •Thoroughly secure the counterweight with the wire ropes and crane so that it does not fall over.

2.Installation of Counterweight

Perform the reverse of the removal procedure.

The tightening torque for the counterweight bolts is 1862 - 2058 N 疥 .

Do not apply oil, etc. to the bolts.

8 Wood plank