. MAINTENANCE MAINTENANCE PROCEDURE MAINTENANCE MAINTENANCE PROCEDURE 4 - 54 (6) Boom cylinder rod end pi n (1 place (7) Arm cy linder fo ot pin (2 p (8) Arm cy linder ro d end pin (9) Boom-Arm coupling pin ( (10) Buck et cylind er foot pin (11) Arm li nk pin (1 (12) Link c oupling pin (2 plac (13) Buck et cylind er rod end pin (1 place) (14) Bucket-Link c oupling pin (2 place (15) Arm-Bucket c oupling pin (1 place (16) Boom swing b racket pin (2 places (17) Boom swing c ylinder ro d end pin (1 place) (18) Boom swing c ylinder foo t pin (1 p lace)