Hitachi 120-3 class User Manual

MAINTENANCE
7-39
Table 2. Lines
Interval (hours) Check Points Abnormalities Remedies
Daily Contact surfaces of
flange joints
Welded surfaces on
joints
Leak (11)
Leak (12)
Replace
O-ring
and/or
retighten bolts
Replace
Every 250 hours Joint neck
Welded surfaces
on joints
Clamps
Crack (13)
Crack (12)
Missing
Deformation
Loose
Replace
Replace
Replace
Replace
Retighten
NOTE: Refer to the illustrations in Fig.2 for each check point location or for a description of the
abnormality. Use genuine Hitachi parts
Table 3. Oil cooler
Interval (hours) Check Points Abnormalities Remedies
Every 250 hours Oil cooler
Coupling and
rubber hose
Leak (14)
Leak (15)
Replace
Retighten or
replace
NOTE: Refer to the illustrations in Fig.3 for each check point location.
Fig. 2
M137-07-001
13 12
11
M137-07-007
13 12
Fig. 3
M1U1-07-051
14
15

Hitachi 120-3 class Specifications

General

Brand	Hitachi
Model	120-3 class
Category	Excavators
Language	English