Hitachi EX20UR-2 Manual page 233

UNDERCARRIAGE /
Center Joint
—
1
W554-03-03-007
1— Bolt (4 used)
3— Retaining Ring
4— Ring
5— Oil Seal (8 used)
6— 0-ring
8— Spindle
9— Dust Seal
10— Body
11— 0-ring
12— Cover
W03-03-27