Lever Hoists
PAGE: 13
Model MLH
MLH-005 & MLH-010
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8.0: TROUBLESHOOTING GUIDE
Problem
Possible Causes
Corrective Action
Pinion shaft does not return to
position after free chaining.
1. Wear of the spline section of the
pinion shaft.
2. Deformation or damage of the
return spring.
3. Mechanism fouled with foreign
matter such as dirt and dust.
Replace with new parts.
Replace with new parts.
Disassemble and clean.
Slip caused by ineffective braking.
1. Worn out friction discs.
2. Oil on the braking surface.
3. Incorrect assembly of the brake
system.
Replace with new ones.
Disassemble and clean.
Assemble correctly.
Load dropped while lowering.
1. Damaged friction discs.
2. Foreign matter in the braking
system.
Replace with new ones.
Disassemble and clean.
Jammed operating handle.
Over-tightening of the brake.
Operate the lever hoist as if lowering
a load.
Noises during hoisting and lowering
operation.
Wear or deformation of the load
chain and load sheave.
Replace with new parts.
Operating handle becomes difficult
to operate during lifting or lowering
operation.
1. Over-hoisting or over-lowering.
2. Twist in the load chain causing it to
get caught between load sheave and
from the load chain.
Operate the hoist in opposite
direction.
Operate the hoist in opposite
direction and remove the twist load
chain guide.
