hitachi — REMOVE AND INSTALL FRONT ATTACHMENT (2-PIECE BOOM)

FRONT ATTACHMENT / Front Attachment CAUTION: The front attachment assembly weight: 7230 kg (15940 lb) 10. Attach a wire rope to first boom (9) and hold first boom (9). 11. Remove bolt (17), washer (21), plate (18) and block (19) from boom foot pin (20). Wire Rope 9 W1V1-04-01-007 20 : 32 mm CAUTION: Boon foot pin (20) weight: 80 kg (176 lb) 12. Insert a pry bar between boom foot pin (20) and main frame (16). Slightly pull out boom foot pin (20). 13. Attach a nylon sling to boom foot pin (20). Turn boom foot pin (20) left and right and pull out boom foot pin (20) from main frame (16). (Adjust the position by using the lifting rope for the front attachment.) 14.

Hoist and hold the front attachment assembly. Move the machine backward. 15. Remove the thrust plate from the pin hole on both sides in main frame (16). 16. Place the wooden block. Place the front attachment assembly onto the wooden block. 19 18 21 17 16 W178-02-11-280 W4-1-13