
wire rope.Do not operatethe winch until all defects
havebeencorrected.
2. AIR SYSTEM. Checkair lines, valvesandother
componentsfor leakage.Repairif necessary.
3. WIRE ROPE.Wire ropeis aconsumableitemwhich
mustbereplacedwhen worn. The following list is a
guide to theacceptedstandardsby which wire rope
mustbejudged andis not presentedasasubstitutefor
anexperiencedinspector:
a. Damage,suchasbird cages,kinking, core
protrusion, crushing, heatdamage,andmain
stranddisplacement.
b. Corrosionandnicking.
C.
Wearof crown wires.Replaceat l/3 wearof any
crown wire.
d. Brokenwires or strands,particularly at
connections.Replacementis necessaryif one
wire is broken ataconnection; six wiresbroken
within onelay; threewires broken in onestrand
within-one lay.
e. Lubrication.
Replacewire ropeif any doubtexistsasto wire rope
serviceability.
4. WIRE ROPEREEVING. Cheekreeving andensure
wire ropeis properly securedto thedrum.
5. CONTROLS. Seethat controls function properly and
control handlereturns to neutral centerwhenreleased.
Periodic Inspection
According to ASME B30.7, frequencyof periodic
inspection dependson theseverity of usage:NORMAL,
yearly; HEAVY, semi-annually; SEVERE,quarterly.
Disassemblymay,berequired for HEAVY or SEVERE
usage.Keepaccumulative recordsof periodic inspectionslo
provide abasisfor continuing evaluation. Inspectall the
itemsin afrequentinspectionplus the following:
1. FASTENERS.Check,capscrew,nuts,pins andother
fastenerson winch andair system.Replaceif missing
andtighten or secureif loose.
2. ALL COMPONENTS. Inspectfor wear,damage,
distortion, deformation andcleanliness.If external
evidenceindicates theneed,disassemble.Checkgears,
shafts,bearings,springs andcovers.Replaceworn or
damagedparts.Clean, lubricate andreassemble.
3. DRUM AND SHEAVES. Checkfor damageor
excessivewear.Replaceif necessary.
4. BRAKE. Perform functional load teston winch. Check
ability of thebraketo hold ratedload.
5. LABELS AND TAGS. Cheekfor presenceand
legibility. Replaceif necessary.
6. WIRE ROPE.Besidesthe itemsin afrequent
inspection,inspectfor the following :
a. Build-up of dirt andcorrosion.Cleanif
necessary.
b. Looseor damagedendconnection.Replaceif
looseor damaged.
C.
Cheekwire ropeanchoris secure.
d. Changesin thesizeof thewire ropediameter.
Periodically measurethediameterof thewire
ropefrom crown-to-crown throughoutthelife of
thewire rope.The actualdiametershouldbe
recordedwhen thewire ropeis underequivalent
loading and in thesameoperatingsection.If the
actualdiameterof the wire ropehasdecreased
morethan 1/64in. (0.4 mm)athorough
examination of thewire ropeshouldbe
conductedby anexperiencedinspectorto
determinethe suitability of thewire ropeto
remain in service.
(ref. Dwg. D6310012)
i
CROWN
TO
CROWN
1
(Dwg. D6310012)
7. FOUNDATION. Check for thecontinuedability
lo
handlethe imposedloads.
Winches Not in Regular Use
A winch which hasbeenidle for aperiod of onemonthor
more,but lessthan six months,shall begiven aninspection
conforming with the requirementsof “FrequentInspection”
beforebeing placedinto service.
A winch which hasbeenidle for aperiod of over six
monthsshall begiven acompleteinspectionconforming
with therequirementsof “Periodic Inspection”. Standby
winchesshall be inspectedal leastsemi-annuallyin
accordancewith the requirementsof “FrequentInspection”.
If abnormaloperating conditions apply, winchesmay
require amorefrequent inspection.
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