UNDERCARRIAGE / Front Idler REMOVE AND INSTALL FRONT IDLER Before removing and installing the front idler, the tracks must be removed first. For removal and instal- lation of the tracks, refer to “Remove and Install Track” section (W3-7-1). In this section, the procedure starts on the premise that the tracks have already been removed. Removal CAUTION: Front idler weight: ZAXIS450-3, 450LC-3, 470H-3, 470LCH-3: 281 kg (619 lb) ZAXIS500LC-3, 520LCH-3: 353 kg (778 lb) The front idler may fly off due to the strong spring force when removing the track ad- juster. Do not stand in the same direction to remove the front idler or where the front idler flies off. 1.
Pry and remove the front idler and yoke (4) from track frame (1) by using a pry bar. W142-03-05-002 1 5 4 2. Attach a nylon sling to bearing (5) and yoke (4) sections. Hoist and remove the front idler assem- bly from track frame (1). 2 3 W17P-03-05-001 3. Remove socket bolts (2) and remove guard (3) from yoke (4). : 19 mm Wooden Block : 90 N m (9.2 kgf m, 66 Ibf ft) 4. When storing the front idler, place the front idler on wooden block as illustrated. W105-03-05-003 W3-5-1