MAN-AMH-LA05-180418
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© 2018 All Material Handling
conditions while still in the early stages, allowing corrective action to be taken before the condition
becomes dangerous. Deficiencies revealed through inspection, or noted during operation, must be
reported to an appointed person. A determination must be made as to whether a deficiency constitutes a
safety hazard before resuming operation of the hoist.
Records and Reports
Some form of inspection record should be maintained for each hoist, listing all points requiring periodic
inspection. A written report should be made monthly on the condition of the critical parts of each hoist.
These reports should be dated, signed by the person who performed the inspection, and kept on file
where they are readily available for review.
Frequent Inspection
On a hoist in continuous service, frequent inspection should be made at the beginning of each shift. In
addition, visual inspections should be conducted during regular service for any damage or evidence of
malfunction.
1. OPERATION. Check for visual or abnormal noises which could indicate a potential problem. Do not
operate a hoist unless the load chain feeds through the hoist and hook block smoothly. Listen for
“clicking”, binding or malfunctioning. The clicking sound of the pawl on the ratchet gear is normal
when a load is being raised. If chain binds, jumps, or is excessively noisy, clean and lubricate the
chain. If problem persists, return the hoist to your nearest repair center. Do not operate the hoist until
all problems have been corrected. Check that hand chain moves freely and without binding or
excessive drag. Hook should stop moving when hand chain stops moving.
2. HOOK LATCH. Check operation of the hook latch. Replace if broken or missing.
3. HOOKS. Check for wear or damage, increased throat width, bent shank or twisting of hook. Replace
hooks which exceed the throat opening discard width (15%) shown in Table 1 (ref. Dwg. H-01) or
exceed a 10° twist (ref. Dwg. H-01). If the hook latch snaps past the tip of the hook, the hook is
sprung and must be replaced. Check hooks swivel easily and smoothly. Repair or lubricate as
necessary.
4. CHAIN (ref. Dwg. C-01). Examine each of the links for bending, cracks in weld areas or shoulders,
transverse nicks and gouges, weld splatter, corrosion pits, striation (minute parallel lines) and chain
wear, including bearing surfaces between chain links. Replace a chain that fails any of the
inspections. Check lubrication and lubricate if necessary. See ‘Load Chain’under LUBRICATION.”
5. LOAD CHAIN REEVING. Make sure welds on standing links are away from load sheave reference
(Dwg. C-02).
Reinstall chain if necessary. Check that the last link of the load chain is securely
connected. Make sure chain is not capsized, twisted or kinked. Adjust as required.
Periodic Inspection
Frequency of periodic inspection primarily depends on the severity of usage:
NORMAL
yearly
HEAVY
semi-annually
SEVERE
quarterly
Disassembly may be required for HEAVY or SEVERE usage. Keep accumulative written records of
periodic inspections to provide a basis for continuing evaluation. Inspect all items in “Frequent
Inspection.” Also inspect the following:
1. FASTENERS. Check rivets, cap screws, nuts, cotter pins and other fasteners on hooks, hoist body
and chain bucket, if used. Replace if missing and tighten or secure if loose.
2. ALL COMPONENTS. Inspect for wear, damage, distortion, deformation and cleanliness. If external
evidence indicates the need for additional inspection return the hoist to your nearest service repair
center.
3. HOOKS. Inspect hooks for cracks. Use magnetic particle or dye penetrant to check for cracks.
Inspect hook retaining parts. Tighten or repair, if necessary. Refer to applicable specifications for
additional hook inspection information.
4. CHAIN SHEAVES. Check for damage or excessive wear. If damage or wear is noted, return the hoist
to your nearest service repair center.
5. LOAD CHAIN. Measure the chain for stretching by measuring across five link sections all along the
chain (ref. Dwg. C-01). When any five links in the working length reach or exceed the discard length
shown in Table, replace the entire chain. Insure the load chain is installed with the weld side of the
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