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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-04). 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. A chain stopper (overtravel restraint) must be installed
chain falls the chain gets pinned back to the hoist body on the dead-end side.
5.4: Periodic Inspection
Frequency of periodic inspection primarily depends on the severity of usage: Refer to
ASME B30.16 and B30.21 chapter 0 for definitions of service
NORMAL
yearly
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, caps 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 the table, replace the entire
chain. Always use a genuine AMH replacement chain.
6. BRAKES. Raise a load equal to the rated capacity of the hoist a few centimeters
(inches) off the floor. Verify hoist holds the load without drift. If drift occurs, contact
your nearest service repair center for repair information.
7. SUPPORTING STRUCTURE. If a permanent structure is used inspect for continued
ability to support load.
8. LABELS AND TAGS. Check for presence and legibility. Replace if necessary.
9. END ANCHOR. Ensure end anchor on hoist is installed and unbent. Repair if
damaged, replace if missing.
5.5 HOISTS NOT IN REGULAR SERVICE
1. Hoists which have been idle for a period of one month or more, but less than one
year should be inspected conforming to the requirements of "Frequent Inspection"
before being placed in service.
MAN-ALLBADGER-19
HEAVY
semi-annually
- 7 -
SEVERE
quarterly
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