hitachi — DISASSEMBLE SWING BEARING

UNDERCARRIAGE / Swing Bearing Disassemble Swing Bearing CAUTION: Swing bearing weight: 510 kg (1125 lb) 1. Place the swing bearing onto the flat workbench. 2. Grind off the caulked part of pin (3). Tap and remove pin (3) from the bottom side of plug (4). 3. Install the bolt (M10, pitch 1.5 mm) into hole A on plug (4). Tap the bolt from its back or pull out plug (4). 4. Hoist and hold outer race (1) of swing bearing horizontally. Remove seals (2, 5). 5. Rotate outer race (1). Remove balls (6) (95 used) and supports (9) (95 used) from the plug (4) hole. When removing ball (6), use rod magnet (C). Use wire (D) and remove support (8).

3 A 4 W1HH-03-01-006 W1HH-03-01-001 1 2 7 C W1HH-03-01-002 7 D W1HH-03-01-007 8 W3-1-5 4 6 5