hitachi — DISASSEMBLE SWING DEVICE

UPPERSTRUCTURE / Swing Device 14. Remove the inner race of roller bearing (14) from housing (26). 15. Set special tool to the shaft (31) assembly. CAUTION: When pushing shaft (31) by using a press, set shaft (31) into the guide. 16. Set shaft (31) attached with special tool to a press. Remove roller bearing (27). 17. Remove sleeve (29) from shaft (31). Remove O-ring (30) from sleeve (29). NOTE: Use the following parts as special tool for roller bearing (27). Press W157-02-06-014 18. Insert a round bar into the oil passage in housing (26). Tap and remove the outer race of roller bearing (27).

Shaft Hose Clamp Special Tool for Roller Bearing (27) Oil Passage Outer Race W157-02-06-012 31 W1HH-02-06-007 CAUTION: Housing (26) weight: 105 kg (230 lb) 19. Fasten the housing (26) body by using a nylon sling. Hoist and turn over housing (26). Insert a screwdriver into the notch on housing (26) where oil seal (28) is mounted. Remove oil seal (28). Hose Clamp Guide Shaft W157-02-06-01 NOTE: THREEBOND has been applied on the periphery of oil seal (28). The oil seal cannot be reused. W2-6-9 Part Size Remarks Shaft or Bolt Length: 220 mm (8.7 in) Diameter: 19 mm (3/4 in) 8 used. All should be identical in length with no wear and deformation on both ends. Material:

S35C Hose Clamp Standard Diameter: 8-1/2” (Applicable Diameter: 185 to 215 mm) 2 used. Guide Height: 160 mm (6.3 in) Outer Diameter: 292 mm (11.5 in) Inner Diameter: 272 mm (10.7 in) 31 27 29 Guide 27