FRONT ATTACHMENT / Cylinder Disassemble Boom, Arm, Bucket Cylinders The disassembling procedure starts on the premise that the hydraulic lines and the bands securing lines have been removed. IMPORTANT: Pull out piston rod (1) straightly in order not to damage the sliding surface. 3. Tap and remove cylinder head (6) with piston rod (1) together from cylinder tube (12) by using a plastic hammer. 4. Secure piston rod (1) on special tool (ST 5908). Put the matching marks on piston rod (1) and the end of nut (15) (bucket cylinder: piston nut (29)). NOTE: The procedure for arm cylinder is an example. CAUTION: Boom cylinder weight: 290 kg (215 lb) Arm cylinder weight:
470 kg (350 lb) Bucket cylinder weight: 250 kg (185 lb) 1. Hoist and place the cylinder on a workbench horizontally. Drain hydraulic oil from the cylinder. Special Tool: ST 5908 W158-04-02-022 W102-04-02-027 2. Fully extend and support piston rod (1). Remove socket bolts (11) (12 used) from cylinder head (6). Boom cylinder, Arm cylinder : 17 mm Bucket Cylinder : 14 mm W4-2-21