KITO ER2 - Page 112

112
Troubleshooting (continued)
Hook (continued)
Symptom Cause Remedy Main factor Countermeasure
Hook Latch has
come off
Deformation of the
Hook
Replace the Hook if the deformation
exceeds the criteria. (See P70.)
Over load Use the electric chain
hoist with a load less
than the capacity.
Earth lifting Do not carry out earth
lifting.
Be careful not to
impede the Hook
with protruding object
during lifting.
Use of the sling with
a size improper to the
Hook
Use the proper sling.
Deformation and
come-off of the
Hook Latch
Replace the Hook Latch if it has come off
or is deformed.
Sling put on the Hook
Latch
Do not put the sling on
the Hook Latch.
Hook bent at the
neck (shank)
Deformation or
damage of the Hook
at its neck
Replace the Hook bent at the neck Lifting a load at the tip
of the Hook
Lateral pulling of the
Hook
Sling a load at the
center of the Hook
Hook unable to
swivel smoothly at
the neck
Rusting shut or
corrosion of Bearing
Swivel the Hook at the neck by hand. If it
is difficult to swivel smoothly, overhaul or
replace the Bearing.
Insufficient grease
application, corrosion
due to environment of
use
Apply grease regularly.
Use the sling to avoid
the dipping of the Hook
into chemicals.
Damaged Bearing Intrusion of dust Be careful about the
intrusion of foreign
matter into the neck.
Chapter 3 Troubleshooting
3
Hook Troubleshooting