Hitachi ZW 120-6 Operator's Manual page 270

Hose
Interval
Check Points
(hours)
Hose covers
Hose ends
Every 10
hours
Fittings
Hose covers
Hose ends
Hose covers
Hose covers
Every 250
hours
Hose
Hose ends and Fittings Deformation or
MAINTENANCE
Abnormalities
Leak (1) Replace
Leak (2) Replace
Leak (3) Retighten or replace
hose or O-ring
Leak (4) Replace
Leak (5) Replace
Exposed reinforcement Replace
(6)
Blister (7) Replace
Bend (8), Collapse (9) Replace
Replace
Corrosion (10)
7-52
Remedies
3 2
1
2
3
M137-07-008
3 2 1
2
3
M115-07-145
4
5
M115-07-146
6
7
M115-07-147
8
M115-07-148
9
10
M115-07-149
Fig.1