Harrington CF005, Owner'S Manual

Page: 19 / 52

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Table 5-4 Hoist Inspection Methods and Criteria
Item Method Discard Limit/Criteria Action
Functional operating
mechanisms. Visual, Auditory Mechanisms should be properly adjusted and
should not produce unusual sounds when operated.
Components should not be deformed, scarred, or
show significant wear. Refer to Figures 5-2, 5-3 and
5-4. Repair or replace
as required.
Hooks
– Stretch
Measure The "k" dimension should not be greater than 1.05
times that measured and recorded at the time of
purchase (See Section 3.4). If recorded "k" values
are not available for hooks when new, use nominal
"k" values from Table 5-5. Replace.
Hooks
– Fretting
wear
Measure The "u" and "t" dimensions should not be less than
discard value listed in Table 5-5. Replace.
Hooks
– Surface
Condition
Visual Should be free of gouges, deep nicks, dents, weld
splatter, and significant corrosion. Replace.
Hooks
–
Deformation
Visual Should be free of twists and deformations. See
Figure 5-1. Replace.
Hooks
– Bent Shank
or Neck
Visual Shank and neck portions of hook should be free of
deformations. Replace.
Hooks
– Swivel
Visual, Function Bearing parts and surfaces should not show
significant wear, and should be free of dirt, grime,
and deformations. Hook should rotate freely with no
roughness. See Figure 5-1. Clean/lubricate, or
replace as required.
Hooks
– Yoke
Assembly
Visual Should be free of significant rust, weld splatter,
nicks, and gouges. Holes should not be elongated,
fasteners should not be loose, and there should be
no gap between mating parts. Tighten or replace
as required.
Hooks
– Idle Sheave
and Shaft (Multiple
Fall Hoist)
Visual, Function Pockets of Idle Sheave should be free of significant
wear. Idle Sheave surfaces should be free of nicks,
gouges, dirt, and grime. Bearing parts and surfaces
of Idle Sheave and Axle should not show significant
wear. Idle Sheave should rotate freely with no
roughness or significant free play. Clean/lubricate, or
replace as required.
Hooks
– Hook
Latches
Visual, Function Latch should not be deformed. Attachment of latch
to hook should not be loose. Latch spring should
not be missing and should not be weak. Latch
movement should not be stiff - when depressed and
released latch should snap smartly to its closed
position. Replace.
Yoke
– Top Pin Hole
Deformation
Visual, Measure The "d" dimension of the top pin hole should not be
greater than the discard value listed in Table 5-6.
Replace Hook Set
Top Pin
–
Deformation
Visual, Measure The pin should be free of scars or significant
deformation. The “d" dimension should not be less
than discard value listed in Table 5-7.
Replace
Yoke
– Chain Pin
Hole Deformation
Measure The "d" dimension of the chain pin hole should not
be greater than the discard value listed in Table 5-6. Replace Hook Set
or yoke.