UNDERCARRIAGE / Swing Bearing REMOVE AND INSTALL SWING BEARING Before removing and installing the swing bearing, the upperstructure must be removed first. For removal and installation of the upperstructure, refer to “Re- move and Install Frame”, “Remove and Install Front Attachment” and “Remove and Install Counterweight” sections. In this section, the procedure starts on the premise that the upperstructure has already been removed. Matching Mark 1 3 2 Removal 1. Put the matching marks on inner race (3) of swing bearing (1) and track frame (2). W142-03-01-001 2. Remove all grease pipes from swing bearing (1). : 17 mm 4 3. Remove bolts (4) (40 used) from swing bearing (1). :
41 mm W105-03-01-002 CAUTION: Swing bearing (1) weight: 642 kg (1420 Ib) 4. Install lifting tool (ST 9050) to swing bearing (1). Hoist and remove swing bearing (1) from track frame (2). ST 9050 1 W105-03-01-003 2 W3-1-1 1