MAINTENANCE MAINTENANCE PROCEDURE (2) Boom foot pin (2 places) (3) Boom cylinder rod end pin (2 places) (4) Arm cylinder foot pin (1 place) (5A) Boom-arm connecting pin (2.1 m arm) (1 place) (5B) Boom-arm connecting pin (2.5 m arm) (1 place) (5C) Boom-arm connecting pin (3.0 m arm) (1 place) (6) Arm cylinder rod end pin (1 place) (7) Bucket cylinder foot pin (1 place) REMARK The greasing point for the boom-arm connecting pin differs according to the length of the arm. When carrying out greasing of (5C) boom-arm connecting pin (3.0 m arm), set to the pos- ture shown in the diagram on the right. (8) Arm-Link coupling pin (1 place) (9) Arm-Bucket coupling pin (1 place) 4-49