UNDERCARRIAGE / Travel Device Disassemble Travel Motor IMPORTANT: Secure case (1) onto the workbench. 4. Install eyebolt (M12, Pitch 1.75 mm) to the pin (28) hole (2 places) on brake piston (24). Attach a nylon sling onto eyebolt. Hoist and remove brake piston (24) from case (1). 5. Remove O-rings (21, 22), backup rings (20, 23) from brake piston (24). 6. Remove disc plates (18) and friction plates (19) from case (1) one by one alternately. ZAXIS450-3, 450LC-3, 470H-3, 470LCH-3: Disc plates (18): 5 used Friction plates (19): 4 used ZAXIS500LC-3, 520LCH-3: 24 used Disc plates (18): 6 used Friction plates (19): 5 used CAUTION: Valve housing (29) weight: 39 kg (90 lb) IMPORTANT:
Loosen socket bolts (30) (9 used) evenly. When socket bolts (30) are loosened, valve housing (29) will raise from case (1) under the reaction force from springs (13, 26). Take down the clearance between case (1) and valve housing (29). When removing valve housing (29) from case (1), valve plate (15) may be removed with valve housing (29) together. Do not drop valve plate (15). 1. Put the matching marks on the mating positions of valve housing (29) and case (1). Install eyebolt (M12, Pitch 1.75 mm) to valve housing (29). Attach a nylon sling onto eyebolt. Hoist and hold valve housing (29). Remove socket bolts (30) (9 used) from valve housing (29). Remove valve housing (29) from case (1). :
14 mm 29 1 30 Eyebolt Mounting Position W16J-03-02-002 2. Remove springs (26) (10 used), O-rings (2) (4 used), pins (28) (4 used) and O-ring (25) from case (1). IMPORTANT: Do not damage valve plate (15). 3. Remove collar (16) and valve plate (15) from cylinder block (14). W3-2-35