FRONT ATTACHMENT / Front Attachment IMPORTANT: When removing arm (24) from the boom, perform the following steps when installing arm (24). 10. Install thrust plate (21) into left and right sides of arm (24). Adjust total clearance of left and right within 1.5 mm. 11. Install the rod side of arm cylinder (23) to arm (24). 12. Apply grease to grease fittings (20, 22) on the boom connecting boss of arm (24) and the arm cylinder (23) rod side. IMPORTANT: For handling of HN bushing for the front attachment, check the followings. Precautions when installing the bushing If a hammer is used, the bushing may be damaged. Use a special tool and press.
Special tool when installing the bushing (Bushing inner diameter) 90 mm (ST 2883) 100 mm (ST 2882) 110 mm (ST 2875) Precautions when reinforcing the arm The heat when welding in order to reinforce the arm may cause oil leakage and decrease lubrication performance. When lubrication oil leaks, replace the bushing. 22 23 24 21 21 20 20 W178-02-11-285 W4-1-9