Hitachi EX20UR-2 Manual page 120

UPPERSTRUCTURE / Swing Device
Disassemble Swing Motor (EX4OUR-2)
W508-02-06-001
1— Socket Bolt (4 used)
9- Retainer 17— Thrust Plate
24— Brake Valve Housing
2— Ball Bearing 10- Rotor
18— Shoe (9 used) 25— Plug (2 used)
3— Plate 11- Holder 19— Holder 26— 0-ring (2 used)
4— Pin
12- Shaft 20— Plunger (9 used)
27— Spring (2 used)
5— 0-ring 13- Filter (2 used)
21— Needle (3 used)
28— Check Valve (2 used)
6— Retainer 14- Socket Bolt (6 used)
22— Retaining Ring
29— Relief Valve
7— Housing
15- Ball Bearing 23— Spring Pin
30— Housing
8— Spring
16— Pin
W02-05-34