Harrington Hoists and Cranes RH Wire Rope Hoist - Manual (Page 47)

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Table 5-5 Hoist (and Trolley) Inspection Methods and Criteria (continued)
Item Method Criteria Action
Hook Block -
Sheave(s) and
Shaft Visual, Function Sheave(s) should be free of significant wear.
Sheave surfaces should be free of nicks, gouges,
dirt and grime. Bearing parts and surfaces of
Sheave and Shaft should not show significant
wear. Sheave should rotate freely with no
roughness or significant free play. Clean/lubricate, or
replace as required.
Hook - 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.
Hoist - Housing
and Mechanical
Components Visual, Auditory,
Vibration,
Function Hoist components including load blocks,
suspension housing, wire rope attachments,
clevises, yokes, suspension bolts, shafts, gears,
bearings, pins and rollers should be free of
cracks, distortion, significant wear and corrosion.
Evidence of same can be detected visually or via
detection of unusual sounds or vibration during
operation. Replace
Trolley - Housing
and Mechanical
Components Visual, Auditory,
Vibration,
Function Trolley components including load bars, trolley
wheels, trolley wheel axles, eye bolts, hex shafts,
gears, bearings, pins, rollers, and bumpers should
be free of cracks, distortion, significant wear, and
corrosion. Evidence of same can be detected
visually or via detection of unusual sounds or
vibration during operation. Replace.
Bolts, Nuts and
Rivets Visual Bolts, nuts and rivets should not be loose. Tighten or replace
as required.
Wire Rope Wedge Visual The fixing (anchorage with wedge) must be
replaced if it shows deformation, wear, cuts, or
necking. Replace
Wire Rope Drum Visual, Function Entire surface of the drum should be coated with
lubricant and should be free of dirt and grime.
Rope should fit in drum grooves. Clean/lubricate
(see Section 6.1).
Wire Rope Guide Visual, Function Rope Guide should be free of significant wear,
cracks, nicks, gouges, dirt and grime. Rope
Guide should take up rope play and move with
the rope on the drum during rope unwinding and
winding. Replace
Wire Rope -
Reeving Visual The wire rope should be reeved properly through
Hook Block Sheave (and Crossbar Sheave for
4/1hoist) - refer to Section 3.6. Wire rope should
be installed properly - refer to Section 6.4. Reeve/Install
properly.