115
Load Sheave, Idle Sheave
Symptom Cause Remedy Main factor Countermeasure
Sounds popping
sound
Abrasion of sheave
pocket or flaw by
the Load Chain out
of mesh with the
Sheave
Worn part
Measure the thickness of the crest.
Replace the Sheave if the thickness is
less than the criteria. (See P81)
The Load Chain may be worn. Check
also the Load Chain.
Long hour operation
without grease, expiry
of service life
Apply lubricant
regularly. (See P40)
Excessive inching
operation
Do not perform
excessive operation.
Over load Use the electric chain
hoist with a load less
than the capacity.
Pulling a load in an
inclined direction
Do not pull a load in an
inclined direction.
Chain Guide A
Symptom Cause Remedy Main factor Countermeasure
Swinging of a load
became larger than
when purchasing
Abrasion of cross
guide
Measure the standard dimension. Replace
the cross guide if the standard dimension
exceeds the criteria. (See P76)
The Load Chain may be worn. Check also
the Load Chain.
Pulling a load in an
inclined direction
Do not pull a load in an
inclined direction.
Gears and Joints
Symptom Cause Remedy Main factor Countermeasure
Unable to lift a load. Abrasion, Damage Replace gear or joint if it is worn
apparently or damaged
Long hour operation
without oil
Keep the oil change
cycle. (See P90)
Long hour operation
without grease (motor
joint)
Apply grease at
periodic inspection.
(See P91)
Irregular motion Partial abrasion or
damage
Too many use of the
Friction Clutch
Avoid the over load.
Habitual use of Upper/
Lower Limit Switch
Do not use Upper/
Lower Limit Switch
habitually.
3
Troubleshooting Load Sheave, Idle Sheave / Chain Guide A / Gears and Joints
(to be continued)
DANGER
• Use KITO genuine
gear oil. (The gear
oil for Friction Clutch
with Mechanical Brake
is different from the
standard specification
oil.)
Use of the oil other than KITO
genuine oil may result in death or
serious injury due to the drop of
a lifted load.
Mandatory
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