Selden TYPE RB Mk 4 - Maintenance

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Maintenance of the in-mast furling mast
Periodic Maintenance
Maintenanceshouldbeundertakenatleastonceayear.Morefrequentcleaningforremovalofsaltandsand
isdonebyrinsingwithfreshwateronly.AllbearingsshouldbegreasedwithGREASE(PartNo.312-501),
atubeofwhichisdeliveredwiththemast.ReadthefollowinginstructionsandseeFig.13:l.
Whengreasingbearingsandgears,donotover-grease.Athincoatingofevenlyappliedgreaseissufcient.
TOP SWIVEL:
Thebearinghasalubricationholemarked”GREASE”wherethegreaseshouldbeinjected.Accessthroughthe
sailslot.
HALYARD SWIVEL:
Lubricatetheswivelbyinjectinggreaseintothegaps & inthering.Thisisbestdonethroughtheupperaccess
hole.
IN-MAST FURLING MAST GEAR.
1. Removetheaccesscoversandun-tensiontheluff-seepages4&5.
2. Removeratchetcoverassembly .
3. Greasethebevelgears  andball-bearing .
Complete Service
Itisagoodideaaftersomeyearsusetoremovethegearforthoroughcleaningandre-greasing.Thein-mastfurling
mastisbuiltsothatservicingwillbeeasyevenafterprotracteduse.Topswivel,halyardswivelandfurlinggearcan
becleanedinkerosene,bloweddrywithcompressedairandre-greased.
Removal of the gear
1. Relievetensionontheluffextrusionbyslackeningthetensioningscrewasdescribedonpage4-5.
2. Removethe2insexscrewsholdingthefurlinggearandtheratchetcover.
3. Releasethetwoscrewsattheballfurlinggearjoinconnectiontoreleasethefurlinggearandtakeoutthegear
 viatheratchetcoverhole.
Removal of the top swivel and halyard swivel.
Thiscanonlybedonewiththemastdown.
1. Relievetensionontheluffextrusionbyslackeningthetensioning
 screwasdescribedonpage4-5.
2.Releasetheheadboxbyundoingthenutsontop.Liftoffthe 
 headboxwhileyoufollowwithreleasingthetensioningscrewuntil
 itseparatesfully.Theboxcanthenbeliftedoff.DetachtheTop
 Swivelfromtheheadbox.
3. TheluffsectionandtheHalyardSwivelcannowbepulledoutof
 themast.