MAINTENANCE
7-52
6
Check Fuel Hoses
--- daily
--- every 250 hours
CAUTION: Fuel leaks can lead to fires that may result
in serious injury.
To avoid this hazard :
1. Park the machine on a firm, level surface. Lower the buck-
et to the ground. Stop the engine. Remove the key from
the key switch. Pull the pilot control shut-off lever to the
LOCK position.
2. Check for kinked hoses, and hoses that rub against each
other parts for leaks.
Check hoses at the check points indicated below for leaks
and other damage that may result in future leaks. If any
abnormalities are found, replace or retighten them, as
shown in Table 4.
3. Repair or replace any loose or damaged hoses. Never
install bent or damaged hoses.
M137-07-006
6
7
Fig. 1
M137-07-003
1
1
2
M137-07-005
5
M137-07-004
4
3
Table 4. Hoses
Interval (hours) Check Points Abnormalities Remedies
Daily Hose ends
Soutache braid
hose
Leak (1)
Friction (2)
Crack (2)
Retighten or
replace
Replace
Replace
Every 250 hours Soutache braid
hose
Hose ends
Hose
Hose
Hose ends and fittings
Crack (3)
Crack (4)
Bend (5)
Collapse (6)
Deformation or
corrosion (7)
Replace
Replace
Replace
Replace
(Use proper bend radius)
Replace
NOTE: Refer to the illustrations in Fig.1 for each check point location or for
a description of the abnormality. Use genuine Hitachi parts.
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