Hammarlund_SP-600-JX-17_overhaul_instructions_TO31R2-4-18-3_1953.pdf

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1、-*-. T.O.31R2-4-18-3 (FormerlyAN16-45-435) HANDBOOK OVERHAUL INSTRUCTIONS RADIO RECEIVER MODELSP-600-JX-17 (HAMMARLUND) PUBLISHEDUNDERAUTHORITY OFTHESECRETARYOFTHEAIRFORCE ANDTHECHIEFOFTHEBUREAUOF AERONAUTICS -*-= SyracuseLithographingCo.syroN.Y.4008-JO-58)REPRINT 19JUNE1953 AN16-45-435 Reproduction

2、fornon-military useoftheinformationorillustrationscontainedinthispub- licationisnot permitted without specific approval of theissuingservice(BuAerorUSAF). The policyforuseofClassifiedPublicationsisestablishedfortheAirForceinAFR205-1 andfortheNavyinNavyRegulations,Article1509. LISTOFREVISEDPAGES ISSU

3、ED-. INSERTLATESTREVISED PAGES. DESTROYSUPERSEDEDPAGES. NOTE:Theportionofthetextaffectedbythecurrentrevisionisindicatedbyaverticallineintheoutermarginsofthepage. Theasteriskindicatespagesrevised,addedordeletedbythecurrentrevision. A ADDITIONALCOPIES OF THIS PUBLICATIONMAYBEOBTAINEDASFOLLOWS: USAFACT

4、IVITIES.-InaccordancewithTechnicalOrderNo.00-5-2. NAVYACTIVITIES.-Submitrequesttonearestsupplypointlistedbelow,usingformNavAer140:NASD,Phila- delphia,Pa.:NAS,Alameda,Calif.;NAS.Jacksonville,Fla.;NAS,Norfolk,Va.;NAS.SanDiego,Calif.;NAS, Seattle,Wash.;ASD,NSC,Guam. Forlistingofavailablematerialanddeta

5、ilsofdistributioaseeNavalAeronauticsPublicationsIndexNavAer00-500. USAF Section AN16-45-435 TABLEOF CONTENTS TableofContents Page IDESCRIPTIONANDLEADINGPARTICULARS. _1 IISPECIALOVERHAULTOOLSANDTESTEQUIPMENT_2 IIISPECIALIZEDMAINTENANCEANDREPAIR._3 IVDISMANTLINGANDDISASSEMBLY_. _. . . . . . . . . . .

6、. . . . . . . . . .5 VCLEANING_._. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 VIINSPECTION_. . . . .8 6-1.General_._. _ . _. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 6-5.ReceiverInspection_._._. . . . . . . . . . . .9 6-8.Subassembl

7、yInspection-. . . . . . . .9 6-10.PartsInspection._. . .10 VIIREPAIRANDREPLACEMENT14 VIIIREASSEMBLYANDTESTINGOFSUBASSEMBLIESAND ASSEMBLIES. . . . . . . . . . . . . . . . . . . . . . ._15 IXREASSEMBLYANDTESTINGOFCOMPONENTS. . . . .17 XFINALASSEMBLY_. . . . . . .18 XIINSPECTIONANDTESTING19 INDEX. _. .

8、 . . . . . . . . . ._. . . . . . .20 SectionIAN16-45-435 ii figureI-I.RadioReceiver,DiversityModelSP-600-JX-I7RackMountings AN16-45-435 SECTION I DESCRIPTION AND LEADING PARTICULARS Section I Paragraphs 1-1to1-5 1-1.GENERAL. 1-4.PERTINENT INFORMATION. 1-2.Thispublicationcomprisesoverhaulinstructions

9、 fortheRadioReceiver,DiversityModelSP-600-JX-17 rackmountings(figure1-1),manufacturedbytheHam- marlundMfg.Co.Inc.,NewYork1,N.Y.Itsupple- mentsAN16-45-434,theHandbookofServiceInstruc- tions,toaffordcompletecoverageofthereceiver. 1-3.Thereceiver,designedfordirectmountingina standard19-inchrelayrack,is

10、 a20-tubegeneralpur- poseradiocommunicationreceiverwitha self-con- tainedstabilizedpowersupplysuitedtooperatefrom asinglephase50-to60-cps,90to270volta-csource. Itprovidesforthecontinuouslyvariableselective receptionofanyradiofrequencycarrierinthe0.54to 54.0mefrequencyrangeandforfixedfrequencycrystal

11、 controlledreceptionfromtwoto30.0mc.Therotary turretwhichhousesthesixfrequency bandsofthe receiver,inassociationwiththegear-traindrive,pro- videstheprecisemechanicalstabilitywherebythe excellentelectricalcharacteristicsofthereceiverare maintained.Also,thesemechanicalfeaturesenablefull advantagetobed

12、erivedfromthecrystalfilterincor- poratedinthei-famplifierofthereceiver.There- ceiverfunctionalcircuitryismostlycontainedinsub- assemblies,eachofwhichmayberemovedforrepair orreplacement.Thereceiverisdesignedforfixed and/ormobileoperationalactivitiessuchasareen- counteredatenclosedbaseorfieldstations,

13、aboard ship,orwhenairborne.Suchactivitiesmaybesubject towiderangesintemperatureandhumiditysincethe receiverisadequatelyconditionedfortropicaluse.The receiverisfullyshieldedtokeepitsradiationcharac- teristicstoapossibleminimum. 1-5.Theradioreceiverissuitedtooperateinsingle ormult-receivertwo-wayopera

14、tionalactivities.Itis especiallysuitedforuseindual-receiverfrequency- shiftspacediversityreceivingsystems.Anyactivity requiresthatcertainauxiliarycomponentsbeassoci- atedwiththereceiver.Apartfromthephonesjack containedinthefrontpaneland-theh-f-ooutputcon- nectoronthefrequencycontrolunit,allthereceiv

15、er inter-connectingmeansarelocatedontherearapron. Therearapronalsocontainstwocartridgetypefuse holders,onefora1.6-amperefuseinserieswiththe powertransformerprimarywinding,andtheother forathree-eighthsamperefuseinserieswiththecenter tapofthepowertransformersecondaryplatewinding. Thefrontpaneloftherec

16、eivercontainsallthereceiver operatingcontrols.Allthereceiveradjustmentcon- trolsarelocatedontherearapron.Thecoiladjustable tuningcoresandtrimmer-capacitorsusedtoalignthe receiver,andtheadjustmentcontrolsontherearapron, maintaintheiralignmentandadjustmentsettingsfor longperiodsoftime.Throughtheuseofv

17、arioustypes ofsprings,allthereceiveradjustablefixedandmoving partsareprovidedwithpositivepositioningandoper- ation.Also,flatspringsareusedontherotaryturret subassemblytoprovideforelectricalgrounding.The receiverr-fcoils,r-fchokes,andallsolderedconnec- tionsarefungicidalvarnishedfortropicalization;al

18、so, allmetalpartsincontactconformtotheelectrochemi- calseriesofelementssothatcorrosioniskepttoa possibleminimum.Inviewofthefactthatallpossible precautionsaretakenatthefactorytoprovideeach receiverforuseinperfectcondition,thepreventive maintenanceandoverhaulperformedonthereceiver shouldbedonewiththel

19、eastpossiblerecoursetothe needlessunsolderingandreplacementofparts. 1 SectionII Paragraphs2-1to2-4 AN16-45-435 SECTION II SPECIAL OVERHAUL TOOLSANDTESTEQUIPMENT 2-1.SPECIAL TOOLS. 2-2.Thespecialoverhaultoolsrequiredtoperform theworkoutlinedinthispublicationarelistedin table2-1.Thetablereferstothefig

20、ureandindex numberoftheillustrationforeachtool,thetoolnum- ber,andthetoolname.Theapplicationcolumninthe tablebrieflydenotesthereceiversubassemblyorparts towhichtherespectivetoolsareappliedwhenthere- -ceiverisoverhauled.Themannerofuseandapplica- tionofeachtoolisoutlinedindetail10paragraphs 7-2and8-2.

21、 2-3.SPECIALTESTEQUIPMENT. 2-4.Nospecialtestequipmentisrequiredtoalign, adjust,orfinal testtheradioreceiver.Tofacilitatethe testingofthereceivera testpositionshouldbemain- tained,providedwiththeappropriatetestequipment andfabricatedcables, asdescribedinAN16-45-434, theHandbookofServiceInstructions.

22、TABLE2-1.SPECIAL TOOLS -REQUIREDFOROVERHAUL FIGUREalso,thebare electricalwirecommontothesixcrystalsockets is unsolderedsubsequenttotheremovalofthecrystal socketplatecarryingthecrystalsockets.Theaudio filter assembly is disassembledsubsequenttoitsdis- mantlingas aunit. SECTION V CLEANING 5-1.OVERALL.

23、 5-2.Theradioreceivermaybeblownoutwithcom- presseddryfilteredairatapressureofapproximately 100lb/sqin. Accessiblepartsmaybewipedwitha cleancloth.Nottooreadilyaccessiblepartsmaybe dustedwithasmalldrybrush. 5-3.ELECTRICALPARTS. 5-4.Whentheradioreceiverisdismantledandits subassembliesaredisassembled,al

24、lwiredelectrical partsmaybeblownout,wiped,anddustedasoutlined inparagraph5-2fortheoverallreceiver.Theairpres- sureatthesubassemblyorpartmaybedecreasedby increasingthedistancebetweentheairnozzleandthe work. WARNINGI Weargogglestoprotecteyesfromdust. 5-5.MECHANICALPARTS. 5-6.Allmechanicalpartssuchasth

25、echassis, side plates,shields, screws, etc.,maybecleanedbybrushing withFederalSpecificationVV-K-211bKeroseneor FederalSpecificationO-C-141Carbon-Tetrachloride. ToremovecorrosionuseNo.000sandpaperaswell, thenwipewithacleancloth. 5-7.Dirtygearsarecleanedbestwithapipecleaner orsmallbrushdippedinanyoneo

26、fthecleaningfluids mentionedinparagraph5-6.Thevariableairtrimmer capacitorsmaybecleanedbysoakingthembodilyin anyoneofthecleaningfluids identifiedinparagraph 5-6,andthenblowingthemout.Thisappliestothe reftrimmercapacitorsevenwhenassembledtotheir isolantitebases,withref coils, resistors,andallother fi

27、xedcapacitorsremoved. 5-8.PRESERVATIONAFTERCLEANING. 5-9.R-FCOILSANDCHOKES.Therefcoilsand chokesusedintheradioreceiverarealltreatedby dippinginbakeliteresin,fungicidalvarnishapproved asperJANSpecificationJAN-C-173.Theapproved thinnerusedwiththisvarnishis asperFederalSpeci- ficationPTX-916GradeB. 5-1

28、0.FOUR-GANGVARIABLEAIRCAPACITOR. Thefour-gangvariableaircapacitorendbearingsare lubricatedatthefactorywithAirForce-NavyAero- nauticalSpecificationAN-G-15aGrease.Itmaybe lubricatedintheremoteinstancewhentheneedarises. 5-11.AIRTRIMMERCAPACITORS.Thevariable airtrimmercapacitorsarealllubricatedatthefact

29、ory withAirForce-NavyAeronauticalSpecificationAN- G-15aGrease. Note Donotlubricatethevariableairtrimmer capacitorseventhoughcleaned asoutlinedin paragraph5-7. 7 Sections V-VIAN16-45-435 5-12.GEAR-TRAINASSEMBLY.Thereassemblyof the radio receiver gear-train assembly, outlined in para- graph8-2,subsequ

30、enttooverhaul,requiresthatthe MilitarySpecificationMIL-G-3278Grease,usedatthe factoryforlubricationpurposes,bereplaced.TheMIL- G-3278Greaseisappliedtothefrontbearinghub(36, figure4-1),totherearbearingmachinescrew(42), andtothe two ball bearings (20); also, at the bearings ofthefivetemperedshaftsonth

31、ebaseplateassembly (43),atthoseoftheshaftoftheflywheel(22),atthose ofthegearassembly(16),andatthoseoftheshaftof thegearassembly(24). SECTIONVI INSPECTION 6-1.GENERAL. 6-2.Theradioreceiverisinspected,bycarefulobserva- tionandfeel,withregardtoanypossiblephysical indicationotherthannormal.Eventhoughthe

32、receiver mechanicaldefectappearstrivial,itmustberepaired atthefirstopportunitypresentedsothatitdoesnot tendtodevelopcumulativereceiverabnormalities leadingtoseriousfailure.Assuch,inspectionis closely concernedwithpreventivemaintenancewherebyperi- odicreceiveroverhaulprovidesforqualifiedinspection pe

33、rsonneltodeterminetheneedfortheimmediate repairofthereceiver;or,todecidethatthenatureof thereceiverabnormalityisinsignificantenoughtobe takencareofatalateroverhauldate. 6-3.INSPECTIONTECHNIQUE.Toprovideforthe properinspectionofeachradioreceiver,theinspector mustthoroughlyfamiliarizehimselfwiththerec

34、eiver withregardtoeachofthefollowingconsiderations. a.Determinefirstthenormalappearanceofthe radioreceiverbycarefullynotingtheappearanceof eachsubassemblyandpartandtheirassembledinter- relationshipasoutlinedinparagraphs4-1theu4-8 and8-1thru8-3.Untilsuchtimethatthenormal detailedappearanceofthereceiv

35、eriscommittedto memory,comparethereceiverpartbypartwitha receiverknowntobeintheconditioninwhichitleft thefactory.Carefullyobservethecolorandfinishof allparts,theirrelativeplacement,thedressingofeach electricalwire,thequalityofthecrimpingofeach solderedwire,theamountofsolderusedtomakea solderedjoint,

36、andthemannerandlocationofthose solderedjointsprovidingforelectricalground.Note thatallsolderedjoints,allrfcoil assemblies,andall r-fchokesaretropicalizedasevidencedbytheirbrown- ishfungicidalvarnishcoating.Notethattheeight nutsatthetwoescutcheonsonthefrontpanel,the12 nutsatthesix crystal socketsonth

37、efrequencycontrol unit,thebearingsetscrew(18,figure4-1),andeach 8 nutusedtomounteachpinoneachofthe24r-ftuner subassembliesiscoatedwithU.S.ArmySpecification 3-182ClearVarnish.Thevarnishisusedasanaidto secureeachnutineachinstancesincenottoomuch straincanbeusedtotighteneachassembly. b.Determinenextthem

38、annerinwhichthereceiver operatingcontrolsactivatethemechanicalmeansused toperformeachcontrolfunction.Getthefeelofeach controlandcommitittomemory.Notethatthetuning controlis flywheelbalancedandthatitis freetoturn evenwhenthetuninglockislocked.Notethatthe twoindicatorsforthemaindialandtheoneindicator

39、forthevernierdialallsimultaneouslyindicatezero dialindicationswhenthefour-gangvariableaircapaci- torisfullymeshed.Notethatthemovablemaindial frequencyindicatorpointerlocatesatthefrequency scaleonthemaindialcorrespondingtothefrequency bandindentedandwhosefrequencyrangeisthat shownonthedialvisiblethro

40、ughthesmallwindow containedinthefrontpanel.Notethemannerin whichthefrequencycontrolunitcrystalswitcharm andeccentricdriveassemblydrivesthetwoswitches coupledtothedriveassembly,theorientationofthe drivearmandtheeffectofthesmallhelicalspring used.Notethespring-returnactionofthemeter switch.Notetheexte

41、nttowhichthegearsonthegear assembly (31, figure4-1)meshwiththosetheyen- gageandtheholeprovisioninthebearingplate(9) togetatoneofthescrews(32).Notethatthelubri- cationusedonthegear-trainassemblyisbarely visible.Notebyfeelthetightnessoftheadjustable tuningcoresandtrimmercapacitors,butmakesure nottodis

42、turbtheiradjustmentsettings. 6-4.RECEIVERABNORMALITIES.Inspectthere- ceiverwithregardtoeachofthefollowingpossible categoriesofabnormality: a.AGING.Theagingofthereceiverisindicated bythesloppyornon-positiveoperationofmovable partswhosenormalfunctionduringmovementor AN16-45-435 SectionVI Paragraphs6-5

43、to6-9 whenindentediscontrolledthroughtheuseofsprings, cams,gears,ballbearings,orprecisebearingfitsto truedmachinedshafting. b.BURNING.Theoverheatingofthereceiveris indicatedwhenpartscomprisingitshowdiscoloration, blistering,bulging,orsmellburnt. c.LEAKAGE.Theevidenceofoilorinsulating compoundatthete

44、rminalsofsealedcontainerparts providetheearliestpossibleevidenceofreceiverleak- age.Theleakagemaybeevidenttooatpinholes and/orbreaksinthecontainerenclosedpartitself. d.CORROSION.Theevidenceofreceivercorrosion istheoxidation(rust)whichformsonsurfaces, screws,nuts,etc.,usuallywheredifferentmetalareas

45、areincontact. e.DUST,DIRT,ETC.Theneedforcleaningthe receiverisevaluatedbestbytheextenttowhichdust, dirt,etc.hasaccumulatedatelectrontubesocketter- minals,resistorboards,andothernottooeasily acces- siblesolderedjointsandcornersinthereceiver. f. LOOSENESS.Theneedfortighteninganysub- assemblyorpartcomp

46、risingthereceiverisevaluated byfeelingthesuspectedloosepartfortightness.In theinstanceofattachinghardwaresuchasnutsand/or screws,considertheassemblytightwhennomorethan a90degreeturnmaybetakenupintheattaching part.Makesuretoresealthosenutslistedabovein paragraph6-3wheneveroccasion arisestotightenany

47、oneofthem. 6-5.RECEIVERINSPECTION. 6-6.Apartfromthecarefulinspectionoftheradio receiverforphysicaldamageevidentbyobservation, thereceivercontrolsshouldallbetriedtorender assurancethattheyfunctionproperly.Dependenton theinspectionappraisalofthereceiveronreceiptfor overhaul,adecisionshouldbemadeastowh

48、etheror notthereceivershouldbeturnedontodetermine theelectricalconditionofcertainofitsfunctioning parts,beforedismantlinganddisassembly.Whenever thereceiveristurnedonforinspection,itshouldbe strippedsothatthereceiverchassisandpanelassem- blymaybeunderobservation.Theninspectthe receiverforthefollowin

49、gconditions: a.Checkther-fgainandtheaudiogaincontrols fornoisyoperation;ifso,replacethem. b.Switchtheselectivityswitchfrompositionto positionandnoteifthereceiverfaultissuchasto causearcingatanyoneoftheswitchcontacts.Thisis averyremotepossibilitybutinanycaseeachswitch contactshouldbeinspectedforevidenceofcharring ofthebakeliteswitchwafers;ifany,replacethe switch. c.Checkatalltubesocketsterminalsforpossible arcingandcharringbetweenterminals;ifany,replace thetubesocke