hitachi — DISASSEMBLE SWING DEVICE

UPPERSTRUCTURE / Swing Device 24. Remove the inner race of roller bearing (30) and sleeve (33) from shaft (35). 25. Remove O-ring (34), screws (30) (4 used) and magnets (31) (4 used) from sleeve (33). IMPORTANT: Do not remove roller bearings (13, 30) and the outer race from housing (27) unless replacing the parts. 26. Remove the inner race of roller bearing (13) from housing (27). Insert a round bar into the oil passage in housing (27). Tap by using a hammer and remove the outer race of roller bearing (30). 27 13 Oil Passage Outer Race 30 W178-02-06-001 CAUTION: Housing (27) weight: 70 kg (155 lb) 27. Attach a nylon sling onto the body of housing (27).

Hoist and place housing (27) with the pinion gear of shaft (35) facing upward. 28. Insert a screwdriver into the notch on housing (27) where oil seal (29) is mounted. Remove oil seal (29). NOTE: Oil seal (29) is secured by using THREEBOND. Do no reuse oil seal (29). 29. Remove roller bearing (13) from housing (27). Attach a bar, tap the outer race by using a hammer and remove roller bearing (13). W2-6-13