UNDERCARRIAGE / Travel Device REMOVE AND INSTALL TRAVEL DEVICE IMPORTANT: Release any pressure in the hydraulic oil tank before doing any work. (Refer to “BLEED AIR FROM HYDRAULIC OIL TANK” on W1-4-1.) 5. Put the matching marks on travel device (10) and track frame (1). Remove bolts (8) and washers (9). Hoist and remove travel device (10) from track frame (1). : 32 mm Bolts (8) and washers (9) ZAXIS450-3, 450LC-3, 470H-3, 470LCH-3: 20 used ZAXIS500LC-3, 520LCH-3: 24 used Removal Before removing the travel device, the tracks must be removed first. For removal and installation of the tracks, refer to “Remove and Install Tracks” section on W3-7-1.
In this section, the procedure starts on the premise that the track have already been removed. 1 2, 3 CAUTION: Cover (4) weight: ZAXIS450-3, 450LC-3, 470H-3, 470LCH-3: 32 kg (71 lb) ZAXIS500LC-3, 520LCH-3: 40 kg (88 lb) 1. Remove bolts (2) (6 used) and washer (3) (6 used) from cover (4). Remove cover (4) from track frame (1). 4 : 24 mm 2. Remove hoses (6, 7) from travel device (10). Attach an identification tag onto the removed hoses for reassembling. Cap the open ends. W16J-03-02-006 5 1 6 : 22 mm, 27 mm 3. Remove split flanges (11) (4 used) and socket bolts (12) (8 used) from travel device (10). Remove hoses (5) (2 used) from travel device (10). Cap the open ends. 7 8, 9 :
10 mm 10 CAUTION: Travel Device (10) weight: ZAXIS450-3, 450LC-3, 470H-3, 470LCH-3: 671 kg (1479 lb) ZAXIS500LC-3, 520LCH-3: 855 kg (1885 lb) 4. Attach a nylon sling to travel device (10). Hoist and hold travel device (10). W16J-03-02-005 W111-03-02-002 W3-2-1 12 11