Hitachi ZW 550-6, Operator'S Manual, Page: 338 / 438

MAINTENANCE
7-54
Table 1. Hoses
Interval (hours) Check Points Abnormalities Remedies
Daily Hose covers Leak (1) Replace
Hose ends Leak (2) Replace
Fittings Leak (3) Retighten or replace
hose or O-ring
Every 250
hours
Hose covers Crack (4) Replace
Hose ends Crack (5) Replace
Hose covers Exposed reinforcement
(6)
Replace
Hose covers Blister (7) Replace
Hose Bend (8) Replace (Use proper
bend radius)
Hose Collapse (9) Replace (Use proper
bend radius)
Hose ends and
fittings
Deformation or
Corrosion (10)
Replace
f
NOTE: Refer to the illustrations in Fig. 1 for each check point location or for a description of
the abnormality. Use genuine Hitachi parts.
M137-07-008
M115-07-145
M115-07-146
M115-07-147
M115-07-148
M115-07-149
9
10
8
6
7
4
5
3
2
1
2 3
3
2
1 2 3
Fig. 1