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Frequent Inspection
For hoists in continuous service, frequent inspection should be made by operators at the
beginning of each shift. In addition, visual inspections should be conducted during regular
operation for any damage or evidence of malfunction.
1. Operation: Check for visual signs or abnormal noises (grinding etc.) which could indicate a potential
problem. Check load chain feed through the hoist. If chain binds or jumps, clean and lubricate. If
problem persists, replace the chain. Do not operate the hoist until all problems have been corrected.
2. Hooks: Check for wear or damage, increased throat width (refer to Fig 8. MHP4161 and
refer to Table 2), bent shank or twisting of hook (refer to Fig 9. MHP0111). Refer to the latest
edition of ASME B30.10 "HOOKS" for additional information. Check hook support bearings for
lubrication or damage. Check hooks swivel easily and smoothly.
Table 2. Gauge width and Discard width values suspension parts
Suspension part
Load hook
Hook suspension
Eyebolt suspension
Hook opening
H
(Fig 8. MHP4161)
(Fig 9. MHP0111)
Form 47584686001 Edition 7
INSPECTION
ELK 25
H
(mm)
28.0
H min.
(mm)
26.6
H
(mm)
28.0
H min.
(mm)
26.6
H
(mm)
15.0
H min.
(mm)
14.3
I
(mm)
34.5
I max.
(mm)
37.9
I
Twisted
Do Not Use
ELK 50
ELK 100 ELK 200 ELK 250
28.0
35.5
26.6
33.8
28.0
35.5
26.6
33.8
15.0
20.0
14.3
19.0
34.5
42.6
37.9
46.8
H
Normal
Can Be Used
EN
48.0
48.0
45.6
45.6
48.0
48.0
45.6
45.6
22.5
29.0
21.4
27.5
44.6
44.6
49.0
49.0
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