37
Symptom Cause Action
Not lower load. • Leaving the Chain Hoist loaded for a
long time or subjecting to mechanical
impact during work may lock the
brake.
Pull the Hand Chain strongly for lowering for
a moment to release the brake.
• Rust locks the brake. Replace the rusted part.
Perform disassembly inspection regularly.
Hard to lower load. • Caw Guide contacts the inner upper
right corner of the Hand Wheel.
Reassemble (Refer to separate Disassembly/
reassembly Manual.)
Load falls when
lowering starts.
• A foreign object between friction
surfaces.
Disassemble the Chain Hoist, remove the
object, and then reassemble.
Replace the Friction Plate if scratched.
• Brake slip caused by signicant rust. Reassemble the rusted part.
Use according to operating conditions in
page 5 to 16. After use, store the Chain Hoist
in accordance with the Maintenance and
storage in page 5 to 16.
• Mis-assembly of the Friction Plate.
Friction Plates are set at only one side
as shown below, or one Friction Plate
is missing.
Reassemble Friction Plates correctly as
below.
• Friction Plate is cracked. Replace cracked Friction Plate.
Load drifts. • Slight dust on the brake surface.
• The brake surface has oil, such as
grease, attached.
Disassemble the Chain Hoist, remove the
dust or oil, and then reassemble.
Replace the Friction Plate if scratched.
Perform disassembly inspection regularly
according to the operating environment.
• Abrasion of Friction Plate due to
frequent extended operation.
Replace worn Friction Plate.
Perform disassembly inspection regularly,
according to the frequency of operation.
Worn Load Chain. • Lack of lubricant (frequent extended
use).
Replace the abraded Load Chain.
Always apply oil to the Load Chain in
accordance with page 5 to 16. Also perform
disassembly inspection regularly.
Lowering failure
Lowering failure is mainly due to a deficiency of the brake.
Rachet Disc
Friction Plates
Bushing
Rachet Disc
Friction Plates
Bushing
Do not lubricate the Friction Plate.
The Friction Plate is of the dry type.
Lubricating the Friction Plate may result in death or
severe injury due to insufficient braking.
(Continued on the following page)