Check Hoses And Lines - Hitachi ZW 550-6 Operator's Manual

Check Hoses and Lines

--- every 10 hours (daily) for leaks
--- every 250 hours for cracks, bends, etc.
d
WARNING: High pressure fluid can penetrate the
skin causing serious injury.
To avoid this hazard, search for leaks with a piece of
cardboard.
Protect hands and body from high-pressure fluids.
If an accident occurs, immediately see a doctor
familiar with this type of injury.
Any fluid injected into the skin must be surgically
removed within a few hours or serious infection
may result.
d
WARNING: Hydraulic oil and lubricant leaks can
lead to fire that may result in serious injury.
To avoid this hazard :
 Park the machine on a solid, level surface.
Lower the bucket to the ground.
Stop the engine. Remove key from the key switch.
Push the control lever lock switch to the lock ( )
position.
 Check for missing or loose clamps, kinked
hoses, lines or hoses that rub against each other,
damaged oil cooler, and loose oil cooler flange
bolts, for leaks.
Check hoses, lines and oil cooler at the check
points indicated below for leaks and other
damage that may result in future leaks.
If abnormalities are found, repair them, as shown
in Tables 1-2.
 Tighten, repair or replace any missing, loose or
damaged clamps, hoses, lines, oil cooler, and
loose oil cooler flange bolts.
Do not bend or strike high-pressure lines.
Never install bent or damaged hoses or lines.
MAINTENANCE
7-53
SA-031
SA-292
SA-044