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Interval(hours)
Check Points
Daily
Hose covers
Hose ends
Fittings
Every 250
Hose covers
hours
Hose ends
Hose covers
Hose covers
Hose
Hose
Hose ends and
fittings
NOTE: Refer to the illustrations in Fig.1 for each check point location or for a descrip-
tion of the abnormality. Use genuine Hitachi parts.
MAINTENANCE
Table 1. Hoses
Abnormalities
Leak (1)
Leak (2)
Leak (3)
Crack (4)
Crack (5)
Exposed reinforcement (6)
Blister (7)
Bend (8)
Collapse (9)
Deformation or
Corrosion (10)
7-35
Remedies
Replace
Replace
Retighten or replace
hose or O-ring
Replace
Replace
Replace
Replace
Replace
Replace
(Use proper bend
radius)
Replace
3
2
1
2
3
M137-07-008
3
2
1
2
3
M115-07-145
4
5
M115-07-146
7
6
M115-07-147
8
M115-07-148
9
1
M115-07-149
Fig.1
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