Hitachi EX20UR-2 Manual page 262

MAINTENANCE STANDARDS
unit: mm (in.)
Key Letter Part Name Standard Dimensions
Allowable Limit Corrective Measure
A
Pin (Boom, Frame) 40 (1.58")
39.5 (1.55')
Replace
Bushing (Boom)
40 (1.58") 41.5 (1.63")
B
Pin (Boom Cylinder, Frame) 40 (1.581
39.0 (1.53")
Bushing (Boom Cylinder) 40 (1.58") 41.5(1.63")
C
Pin (Boom, Boom Cylinder)
40 (1.58") 39.0 (1.531
Bushing (Boom Cylinder) 40 (1.581
41.5 (1.63")
D
Pin (Arm, Stay) 40 (1.58')
39.5 (1.55")
Bushing (Arm)
40 (1.58') 41.5 (1.63')
E
Pin (Arm, Arm Cylinder) 35 (1.38')
34.0 (1.34')
Bushing (Arm Cylinder) 35 (1.38")
36.5 (1.43")
F
Pin (Stay, Arm Cylinder) 40 (1.58')
39.5 (1.55')
Bushing (Arm Cylinder)
40 (1.58") 41.5 (1.63')
G
Pin (Arm, Bucket Cylinder) 35 (1.38°)
34.0 (1.34')
Busing (Bucket Cylinder) 35 (1.38')
36.5 (1.43')
FRONT ATTACHMENT I Front Attachment
W04-01-06