Operator's Manual

Figure51
1.Screwdriver
5.Adjustthebrakeshoesoutuntilthepressureofthe
liningsagainstthedrummakesthewheeldifcult
toturn.
6.Rotatethestarwheelintheoppositedirectionuntil
thewheelturnsfreelywithaslightdragonthelining.
7.Replacetheadjustingholecover.
8.Repeattheaboveprocedureoneachbrake.
InspectingtheBrakeShoes
andLinings
Onceamonth,conductasimplevisualinspectionof
yourbrakeshoesandlinings.
Whenabrakeshoebecomesworn,replacebothshoes
oneachbrake,andbothbrakesonthesameaxle.This
ensuresthatthebrakesremainbalanced.
Replacethebrakeliningswhentheyare
•wornto1/16inch(1.6mm)orlessremaining
thickness
•contaminatedwithgreaseoroil
•abnormallyscoredorgouged
Note:Hairlineheatcracksarenormalinthebrake
liningsandshouldnotcauseconcern.
YearlyBrakeCleaningand
Inspection
Inspectandserviceyourelectricbrakesonceayearor
moreoftenwithheavyuseordecliningperformance
•Changemagnetsandshoeswhentheybecomeworn
orscored.
•Cleanthebackingplate,magnetarm,magnet,and
brakeshoeswithanautomotivebrakecleaner.
•Ensurethatallpartsremovedarereplacedinthe
samebrakeanddrumassemblythattheywere
removedfrom.
•Inspectthemagnetarmforanylooseorwornparts.
•Checktheshoereturnsprings,theholddown
springs,andtheadjusterspringsforstretchor
deformationandreplacethemifrequired.
CAUTION
Brakedustcanbehazardoustoyourhealthif
inhaled,takeprecautionswhenservicingbrakes:
–Donotcreateorbreathedust.
–Donotmachine,le,orgrindthebrake
linings.
–Donotusecompressedairordrybrushing
forcleaning.
Lubrication
Beforereassemblingtheelectricbrakes,applyalightlm
ofantiseizecompound,orgreasesuchas“Lubriplate,”
onthe:
•brakeanchorpin
•actuatingarmbushingandpin
•areasonthebackingplatethatareincontactwith
thebrakeshoesandmagnetleverarm
•actuatingblockontheactuatingarm
Important:Donotallowgreasetocontactthe
brakelinings,drums,ormagnets.
InspectingtheMagnets
Thebrakes’electromagnetsaredesignedtoprovidethe
properinputforceandfriction.
Inspectthemagnetsregularly,andreplaceiftheybecome
unevenlyworn.Useatoolwithastraightedgetocheck
wear.
Evenifthewearisnormal,youshouldreplacethe
magnetsifanypartofthemagnetcoilisvisiblethrough
thefrictionmaterialonthemagnetface.Replacethe
magnetsinpairs(bothsidesofanaxle).
Whenreplacingthemagnets,alsoresurfacethedrum
armaturesurface.
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