hitachi — REMOVE AND INSTALL MAIN FRAME

UPPERSTRUCTURE / Main Frame Installation CAUTION: Upperstructure weight: 10800 kg (23800 lb) Upperstructure weight with removal / installation device: 11200 kg (24700 lb) 1. Attach a wire rope onto special tools (ST 0234, ST 0235) and the boom bracket. Adjust the wire rope length by using a chain block (6) and make the counterweight horizontal. Hoist and install the main frame to the track frame. 2. Hoist the main frame. Align knock pin holes (5) (2 used) on the main frame with the knock pins (2 used) of outer race in swing bearing. 3. Apply LOCTITE #262 to bolts (3) (29 used) and (4) (7 used). Install the main frame with bolts (3) (29 used) and (4) (7 used). W157-02-03-002 : 46 mm :

1950 (199 kgf m, 1440 lbf ft) 4. Install all hoses to the upper of center joint (2). : 19 mm W105-02-03-005 4 4 : 29.5 N m (3 kgf m, 22 lbf ft) : 27 mm : 78 N m (8 kgf m, 58 lbf ft) : 41 mm 4 4 : 205 N m (21 kgf m, 151 lbf ft) 5. Install lock plate (1) to center joint (2). (Refer to the Remove and Install Center Joint section on W3-3.) 3 4 4 4 : 22 mm : 140 N m (14 kgf m, 103 lbf ft) W1J1-02-03-004 5 1 2 W1J1-02-03-001 W2-3-4 6 Main F Track Fra Main F rame me Front Wire Rope Boom Bra Wire Rope