8. BOOM AND BUCKET CYLINDER 8. BOOM AND BUCKET CYLINDER The boom cylinders are two unit and the bucket cylinder is one unit. They use a bolt on rod guide. The piston (14) threads on to the rod (2) and is retained by a nut (20) and set screw (21). The piston seals against the tube (1) with piston seal (15). Two wear rings (16) are located on each side of the piston seal. The gland (3, the rod guide) seals against the tube with an O-ring (12). The cylinder thread seals against the rod with a lip type buffer ring (8) and a rod seal (6). A dust wiper (9) cleans the rod when it is retracted.
BOOM CYLINDER 1) 24 23, 31 30, 22 29 26 25 7 6, 13 12, 19 18, 27 760F6WE17 1 Tube assembly 2 Rod assembly 3 Gland 4 Bushing 5 Snap ring 6 Rod seal 7 Back up ring 8 Buffer ring 9 Dust wiper 10 Snap ring 11 O-ring 12 O-ring 13 Back up ring 14 Piston 15 Piston seal 16 Wear ring 17 Dust ring 18 O-ring 19 Back up ring 20 Lock nut 21 Set screw 22 Socket bolt 23 Pin bushing 24 Dust seal 25 Pipe assembly 26 Pipe assembly 27 O-ring 28 Socket bolt 29 Band assembly 30 Hexagon bolt 31 Spring washer 6-34 9,10 3 8 11 4,5 1 2 14 17 16 15 2 0 21 28