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Page Title:
Table XII. Classification of visual defects |
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|  MIL-H-904J
4.6 Examination.
4.6.1 Visual examination. Sample hoists shall be visually examined in accordance with table
XIX.
TABLE XII. Classification of visual defects
Defects
Major
Hoist hooks not equipped with safety latch, or safety latch not as specified (see 3.3.5.1)
100
101
Hook throat opening not as specified (see table I)
Trolley wheel mounting arrangement not as specified (see 3.3.7.1)
102
103
Trolley wheel treads not as specified (see 33.7.1)
104
Trolley hoist not equipped with track damp, when specified (see 3.3.7.5)
105
Trolley track clamps do not function as specified (see 3.3.7,5)
106
Trolley wheel preventer bars missing or do not prevent trolley wheel flange from riding up onto
the supporting beam (see 33.7.7)
Type H hoist (convertible capacity), means to convert hoist rated load, not as specified
107
(see 3$.21). Type H hoist convertible capacity chain stops not removable (see 3-82.2).
Type H hoists not equipped with freewheeling device (see 3.8.4)
108
109
Lubrication fittings missing (see 3.9)
Hoist components damaged or missing (see 3.12)
110
111
Load chain not securely attached to hook swivel or, for multiple sheave reeve, not securely
attached to load block or hoist (see 3.3.2.1.1)
Hoist lift height not as specified (see tables II through VII)
112
Lubrication of moving parts inadequate (see 3.9)
113
Minor
201
Gear casing does not protect against the entry of foreign matter (such as dirt, dust, and water
spray) or permit ready access (see 3.3)
Hoists, hook suspension, hoist load hook fully retracted, distance between hooks not as specified
(see tables II, VI, and VII)
203
Hoist weight not as specified (see tables II through VII)
Trolley hoist underside of track to inside of load hook distance is not as specified (see tables
204
III, IV,and V)
Chain links not uniform, with a tendeney to twist chain (see 3.3.2.1.1)
205
Hand chain drop not as specified (see 3.3.2.2)
206
Chain finish not as specified (see 3.3.2.3)
207
Trolley wheels, concentricity not as specified (see 3.3.7.1)
Trolley wheel bearings not protected to exclude foreign matter (see 3.3.7.2)
210
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